3.4.6 The Excretory System in the Human 1

Follow-Me – iQuiz

Q. What is meant by the term excretion?

Abdominal; Abdomen

Carbohydrate; Fat; Fatty acids

Glucose is small and passes through

Fat/Adipose tissue; Trapped air/Hair

Elimination of waste products of metabolism

Piloerection; Vasoconstriction; Brain initiates increased

metabolic rate

Maintaining water/salt balance; Osmoregulation

Liquid part of the blood

Has ducts; Does not produce hormones

Protein; Amino acid

Renal artery

Film of H2O on body surface, heated by the body; water evaporates with the heat,

body left cooler

Too big to pass into Bowman’s capsule

Urea; Salt; Uric acid

Plasma that has entered Bowman’s capsule

Vasodilation; Sweat secretion; Hairs lie flat, less air trapped

Urethra

Ureter

Usually reabsorbed

Animal that produces its own body heat; Body temp independent of

environment temp

Proximal convoluted tubule

Aorta

Respiration

Diffusion; Transpiration; Through lenticels or stomata;

Leaf fall

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Q. State the role of the kidneys in homeostasis.

Abdominal; Abdomen

Carbohydrate; Fat; Fatty acids

Glucose is small and passes through

Fat/Adipose tissue; Trapped air/Hair

Elimination of waste products of metabolism

Piloerection; Vasoconstriction; Brain initiates increased

metabolic rate

Maintaining water/salt balance; Osmoregulation

Liquid part of the blood

Has ducts; Does not produce hormones

Protein; Amino acid

Renal artery

Film of H2O on body surface, heated by the body; water evaporates with the heat,

body left cooler

Too big to pass into Bowman’s capsule

Urea; Salt; Uric acid

Plasma that has entered Bowman’s capsule

Vasodilation; Sweat secretion; Hairs lie flat, less air trapped

Urethra

Ureter

Usually reabsorbed

Animal that produces its own body heat; Body temp independent of

environment temp

Proximal convoluted tubule

Aorta

Respiration

Diffusion; Transpiration; Through lenticels or stomata;

Leaf fall

CONGRATULATIONS

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Q. What tube/structure connects the kidney to the bladder?

Abdominal; Abdomen

Carbohydrate; Fat; Fatty acids

Glucose is small and passes through

Fat/Adipose tissue; Trapped air/Hair

Elimination of waste products of metabolism

Piloerection; Vasoconstriction; Brain initiates increased

metabolic rate

Maintaining water/salt balance; Osmoregulation

Liquid part of the blood

Has ducts; Does not produce hormones

Protein; Amino acid

Renal artery

Film of H2O on body surface, heated by the body; water evaporates with the heat,

body left cooler

Too big to pass into Bowman’s capsule

Urea; Salt; Uric acid

Plasma that has entered Bowman’s capsule

Vasodilation; Sweat secretion; Hairs lie flat, less air trapped

Urethra

Ureter

Usually reabsorbed

Animal that produces its own body heat; Body temp independent of

environment temp

Proximal convoluted tubule

Aorta

Respiration

Diffusion; Transpiration; Through lenticels or stomata;

Leaf fall

CONGRATULATIONS

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Q. Explain the term plasma.

Abdominal; Abdomen

Carbohydrate; Fat; Fatty acids

Glucose is small and passes through

Fat/Adipose tissue; Trapped air/Hair

Elimination of waste products of metabolism

Piloerection; Vasoconstriction; Brain initiates increased

metabolic rate

Maintaining water/salt balance; Osmoregulation

Liquid part of the blood

Has ducts; Does not produce hormones

Protein; Amino acid

Renal artery

Film of H2O on body surface, heated by the body; water evaporates with the heat,

body left cooler

Too big to pass into Bowman’s capsule

Urea; Salt; Uric acid

Plasma that has entered Bowman’s capsule

Vasodilation; Sweat secretion; Hairs lie flat, less air trapped

Urethra

Ureter

Usually reabsorbed

Animal that produces its own body heat; Body temp independent of

environment temp

Proximal convoluted tubule

Aorta

Respiration

Diffusion; Transpiration; Through lenticels or stomata;

Leaf fall

CONGRATULATIONS

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Q. Explain why red blood cells are normally absent from glomerular filtrate.

Abdominal; Abdomen

Carbohydrate; Fat; Fatty acids

Glucose is small and passes through

Fat/Adipose tissue; Trapped air/Hair

Elimination of waste products of metabolism

Piloerection; Vasoconstriction; Brain initiates increased

metabolic rate

Maintaining water/salt balance; Osmoregulation

Liquid part of the blood

Has ducts; Does not produce hormones

Protein; Amino acid

Renal artery

Film of H2O on body surface, heated by the body; water evaporates with the heat,

body left cooler

Too big to pass into Bowman’s capsule

Urea; Salt; Uric acid

Plasma that has entered Bowman’s capsule

Vasodilation; Sweat secretion; Hairs lie flat, less air trapped

Urethra

Ureter

Usually reabsorbed

Animal that produces its own body heat; Body temp independent of

environment temp

Proximal convoluted tubule

Aorta

Respiration

Diffusion; Transpiration; Through lenticels or stomata;

Leaf fall

CONGRATULATIONS

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Q. Urea is an excretory product. Name a substance from which it is derived.

Abdominal; Abdomen

Carbohydrate; Fat; Fatty acids

Glucose is small and passes through

Fat/Adipose tissue; Trapped air/Hair

Elimination of waste products of metabolism

Piloerection; Vasoconstriction; Brain initiates increased

metabolic rate

Maintaining water/salt balance; Osmoregulation

Liquid part of the blood

Has ducts; Does not produce hormones

Protein; Amino acid

Renal artery

Film of H2O on body surface, heated by the body; water evaporates with the heat,

body left cooler

Too big to pass into Bowman’s capsule

Urea; Salt; Uric acid

Plasma that has entered Bowman’s capsule

Vasodilation; Sweat secretion; Hairs lie flat, less air trapped

Urethra

Ureter

Usually reabsorbed

Animal that produces its own body heat; Body temp independent of

environment temp

Proximal convoluted tubule

Aorta

Respiration

Diffusion; Transpiration; Through lenticels or stomata;

Leaf fall

CONGRATULATIONS

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Q. Where in the human kidney does re-absorption take place?

Abdominal; Abdomen

Carbohydrate; Fat; Fatty acids

Glucose is small and passes through

Fat/Adipose tissue; Trapped air/Hair

Elimination of waste products of metabolism

Piloerection; Vasoconstriction; Brain initiates increased

metabolic rate

Maintaining water/salt balance; Osmoregulation

Liquid part of the blood

Has ducts; Does not produce hormones

Protein; Amino acid

Renal artery

Film of H2O on body surface, heated by the body; water evaporates with the heat,

body left cooler

Too big to pass into Bowman’s capsule

Urea; Salt; Uric acid

Plasma that has entered Bowman’s capsule

Vasodilation; Sweat secretion; Hairs lie flat, less air trapped

Urethra

Ureter

Usually reabsorbed

Animal that produces its own body heat; Body temp independent of

environment temp

Proximal convoluted tubule

Aorta

Respiration

Diffusion; Transpiration; Through lenticels or stomata;

Leaf fall

CONGRATULATIONS

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Q. Name the blood vessel that supplies blood to a kidney.

Abdominal; Abdomen

Carbohydrate; Fat; Fatty acids

Glucose is small and passes through

Fat/Adipose tissue; Trapped air/Hair

Elimination of waste products of metabolism

Piloerection; Vasoconstriction; Brain initiates increased

metabolic rate

Maintaining water/salt balance; Osmoregulation

Liquid part of the blood

Has ducts; Does not produce hormones

Protein; Amino acid

Renal artery

Film of H2O on body surface, heated by the body; water evaporates with the heat,

body left cooler

Too big to pass into Bowman’s capsule

Urea; Salt; Uric acid

Plasma that has entered Bowman’s capsule

Vasodilation; Sweat secretion; Hairs lie flat, less air trapped

Urethra

Ureter

Usually reabsorbed

Animal that produces its own body heat; Body temp independent of

environment temp

Proximal convoluted tubule

Aorta

Respiration

Diffusion; Transpiration; Through lenticels or stomata;

Leaf fall

CONGRATULATIONS

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Q. In which cavity of the body are the kidneys located?

Abdominal; Abdomen

Carbohydrate; Fat; Fatty acids

Glucose is small and passes through

Fat/Adipose tissue; Trapped air/Hair

Elimination of waste products of metabolism

Piloerection; Vasoconstriction; Brain initiates increased

metabolic rate

Maintaining water/salt balance; Osmoregulation

Liquid part of the blood

Has ducts; Does not produce hormones

Protein; Amino acid

Renal artery

Film of H2O on body surface, heated by the body; water evaporates with the heat,

body left cooler

Too big to pass into Bowman’s capsule

Urea; Salt; Uric acid

Plasma that has entered Bowman’s capsule

Vasodilation; Sweat secretion; Hairs lie flat, less air trapped

Urethra

Ureter

Usually reabsorbed

Animal that produces its own body heat; Body temp independent of

environment temp

Proximal convoluted tubule

Aorta

Respiration

Diffusion; Transpiration; Through lenticels or stomata;

Leaf fall

CONGRATULATIONS

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Q. Name one substance, other than water, excreted in the urine.

Abdominal; Abdomen

Carbohydrate; Fat; Fatty acids

Glucose is small and passes through

Fat/Adipose tissue; Trapped air/Hair

Elimination of waste products of metabolism

Piloerection; Vasoconstriction; Brain initiates increased

metabolic rate

Maintaining water/salt balance; Osmoregulation

Liquid part of the blood

Has ducts; Does not produce hormones

Protein; Amino acid

Renal artery

Film of H2O on body surface, heated by the body; water evaporates with the heat,

body left cooler

Too big to pass into Bowman’s capsule

Urea; Salt; Uric acid

Plasma that has entered Bowman’s capsule

Vasodilation; Sweat secretion; Hairs lie flat, less air trapped

Urethra

Ureter

Usually reabsorbed

Animal that produces its own body heat; Body temp independent of

environment temp

Proximal convoluted tubule

Aorta

Respiration

Diffusion; Transpiration; Through lenticels or stomata;

Leaf fall

CONGRATULATIONS

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Q. Why is glucose normally absent from urine?

Abdominal; Abdomen

Carbohydrate; Fat; Fatty acids

Glucose is small and passes through

Fat/Adipose tissue; Trapped air/Hair

Elimination of waste products of metabolism

Piloerection; Vasoconstriction; Brain initiates increased

metabolic rate

Maintaining water/salt balance; Osmoregulation

Liquid part of the blood

Has ducts; Does not produce hormones

Protein; Amino acid

Renal artery

Film of H2O on body surface, heated by the body; water evaporates with the heat,

body left cooler

Too big to pass into Bowman’s capsule

Urea; Salt; Uric acid

Plasma that has entered Bowman’s capsule

Vasodilation; Sweat secretion; Hairs lie flat, less air trapped

Urethra

Ureter

Usually reabsorbed

Animal that produces its own body heat; Body temp independent of

environment temp

Proximal convoluted tubule

Aorta

Respiration

Diffusion; Transpiration; Through lenticels or stomata;

Leaf fall

CONGRATULATIONS

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Q. Give a feature of the kidney which indicates that it is an exocrine gland.

Abdominal; Abdomen

Carbohydrate; Fat; Fatty acids

Glucose is small and passes through

Fat/Adipose tissue; Trapped air/Hair

Elimination of waste products of metabolism

Piloerection; Vasoconstriction; Brain initiates increased

metabolic rate

Maintaining water/salt balance; Osmoregulation

Liquid part of the blood

Has ducts; Does not produce hormones

Protein; Amino acid

Renal artery

Film of H2O on body surface, heated by the body; water evaporates with the heat,

body left cooler

Too big to pass into Bowman’s capsule

Urea; Salt; Uric acid

Plasma that has entered Bowman’s capsule

Vasodilation; Sweat secretion; Hairs lie flat, less air trapped

Urethra

Ureter

Usually reabsorbed

Animal that produces its own body heat; Body temp independent of

environment temp

Proximal convoluted tubule

Aorta

Respiration

Diffusion; Transpiration; Through lenticels or stomata;

Leaf fall

CONGRATULATIONS

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Q. Mention one method of excretion in flowering plants.

Abdominal; Abdomen

Carbohydrate; Fat; Fatty acids

Glucose is small and passes through

Fat/Adipose tissue; Trapped air/Hair

Elimination of waste products of metabolism

Piloerection; Vasoconstriction; Brain initiates increased

metabolic rate

Maintaining water/salt balance; Osmoregulation

Liquid part of the blood

Has ducts; Does not produce hormones

Protein; Amino acid

Renal artery

Film of H2O on body surface, heated by the body; water evaporates with the heat,

body left cooler

Too big to pass into Bowman’s capsule

Urea; Salt; Uric acid

Plasma that has entered Bowman’s capsule

Vasodilation; Sweat secretion; Hairs lie flat, less air trapped

Urethra

Ureter

Usually reabsorbed

Animal that produces its own body heat; Body temp independent of

environment temp

Proximal convoluted tubule

Aorta

Respiration

Diffusion; Transpiration; Through lenticels or stomata;

Leaf fall

CONGRATULATIONS

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Q. Name the tube/structure that delivers urine outside the body.

Abdominal; Abdomen

Carbohydrate; Fat; Fatty acids

Glucose is small and passes through

Fat/Adipose tissue; Trapped air/Hair

Elimination of waste products of metabolism

Piloerection; Vasoconstriction; Brain initiates increased

metabolic rate

Maintaining water/salt balance; Osmoregulation

Liquid part of the blood

Has ducts; Does not produce hormones

Protein; Amino acid

Renal artery

Film of H2O on body surface, heated by the body; water evaporates with the heat,

body left cooler

Too big to pass into Bowman’s capsule

Urea; Salt; Uric acid

Plasma that has entered Bowman’s capsule

Vasodilation; Sweat secretion; Hairs lie flat, less air trapped

Urethra

Ureter

Usually reabsorbed

Animal that produces its own body heat; Body temp independent of

environment temp

Proximal convoluted tubule

Aorta

Respiration

Diffusion; Transpiration; Through lenticels or stomata;

Leaf fall

CONGRATULATIONS

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Q. Explain the term glomerular filtrate.

Abdominal; Abdomen

Carbohydrate; Fat; Fatty acids

Glucose is small and passes through

Fat/Adipose tissue; Trapped air/Hair

Elimination of waste products of metabolism

Piloerection; Vasoconstriction; Brain initiates increased

metabolic rate

Maintaining water/salt balance; Osmoregulation

Liquid part of the blood

Has ducts; Does not produce hormones

Protein; Amino acid

Renal artery

Film of H2O on body surface, heated by the body; water evaporates with the heat,

body left cooler

Too big to pass into Bowman’s capsule

Urea; Salt; Uric acid

Plasma that has entered Bowman’s capsule

Vasodilation; Sweat secretion; Hairs lie flat, less air trapped

Urethra

Ureter

Usually reabsorbed

Animal that produces its own body heat; Body temp independent of

environment temp

Proximal convoluted tubule

Aorta

Respiration

Diffusion; Transpiration; Through lenticels or stomata;

Leaf fall

CONGRATULATIONS

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Q. Carbon dioxide is an excretory product. Name a substance from which it is derived.

Abdominal; Abdomen

Carbohydrate; Fat; Fatty acids

Glucose is small and passes through

Fat/Adipose tissue; Trapped air/Hair

Elimination of waste products of metabolism

Piloerection; Vasoconstriction; Brain initiates increased

metabolic rate

Maintaining water/salt balance; Osmoregulation

Liquid part of the blood

Has ducts; Does not produce hormones

Protein; Amino acid

Renal artery

Film of H2O on body surface, heated by the body; water evaporates with the heat,

body left cooler

Too big to pass into Bowman’s capsule

Urea; Salt; Uric acid

Plasma that has entered Bowman’s capsule

Vasodilation; Sweat secretion; Hairs lie flat, less air trapped

Urethra

Ureter

Usually reabsorbed

Animal that produces its own body heat; Body temp independent of

environment temp

Proximal convoluted tubule

Aorta

Respiration

Diffusion; Transpiration; Through lenticels or stomata;

Leaf fall

CONGRATULATIONS

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Q. What is the source of the heat that keeps the body at a fairly constant temperature?

Abdominal; Abdomen

Carbohydrate; Fat; Fatty acids

Glucose is small and passes through

Fat/Adipose tissue; Trapped air/Hair

Elimination of waste products of metabolism

Piloerection; Vasoconstriction; Brain initiates increased

metabolic rate

Maintaining water/salt balance; Osmoregulation

Liquid part of the blood

Has ducts; Does not produce hormones

Protein; Amino acid

Renal artery

Film of H2O on body surface, heated by the body; water evaporates with the heat,

body left cooler

Too big to pass into Bowman’s capsule

Urea; Salt; Uric acid

Plasma that has entered Bowman’s capsule

Vasodilation; Sweat secretion; Hairs lie flat, less air trapped

Urethra

Ureter

Usually reabsorbed

Animal that produces its own body heat; Body temp independent of

environment temp

Proximal convoluted tubule

Aorta

Respiration

Diffusion; Transpiration; Through lenticels or stomata;

Leaf fall

CONGRATULATIONS

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Q. From which blood vessel does the renal artery arise?

Abdominal; Abdomen

Carbohydrate; Fat; Fatty acids

Glucose is small and passes through

Fat/Adipose tissue; Trapped air/Hair

Elimination of waste products of metabolism

Piloerection; Vasoconstriction; Brain initiates increased

metabolic rate

Maintaining water/salt balance; Osmoregulation

Liquid part of the blood

Has ducts; Does not produce hormones

Protein; Amino acid

Renal artery

Film of H2O on body surface, heated by the body; water evaporates with the heat,

body left cooler

Too big to pass into Bowman’s capsule

Urea; Salt; Uric acid

Plasma that has entered Bowman’s capsule

Vasodilation; Sweat secretion; Hairs lie flat, less air trapped

Urethra

Ureter

Usually reabsorbed

Animal that produces its own body heat; Body temp independent of

environment temp

Proximal convoluted tubule

Aorta

Respiration

Diffusion; Transpiration; Through lenticels or stomata;

Leaf fall

CONGRATULATIONS

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Q. The concentration of glucose is the same in plasma and glomerular filtrate. Why is this?

Abdominal; Abdomen

Carbohydrate; Fat; Fatty acids

Glucose is small and passes through

Fat/Adipose tissue; Trapped air/Hair

Elimination of waste products of metabolism

Piloerection; Vasoconstriction; Brain initiates increased

metabolic rate

Maintaining water/salt balance; Osmoregulation

Liquid part of the blood

Has ducts; Does not produce hormones

Protein; Amino acid

Renal artery

Film of H2O on body surface, heated by the body; water evaporates with the heat,

body left cooler

Too big to pass into Bowman’s capsule

Urea; Salt; Uric acid

Plasma that has entered Bowman’s capsule

Vasodilation; Sweat secretion; Hairs lie flat, less air trapped

Urethra

Ureter

Usually reabsorbed

Animal that produces its own body heat; Body temp independent of

environment temp

Proximal convoluted tubule

Aorta

Respiration

Diffusion; Transpiration; Through lenticels or stomata;

Leaf fall

CONGRATULATIONS

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Q. State two responses that result when body temperature begins to drop.

Abdominal; Abdomen

Carbohydrate; Fat; Fatty acids

Glucose is small and passes through

Fat/Adipose tissue; Trapped air/Hair

Elimination of waste products of metabolism

Piloerection; Vasoconstriction; Brain initiates increased

metabolic rate

Maintaining water/salt balance; Osmoregulation

Liquid part of the blood

Has ducts; Does not produce hormones

Protein; Amino acid

Renal artery

Film of H2O on body surface, heated by the body; water evaporates with the heat,

body left cooler

Too big to pass into Bowman’s capsule

Urea; Salt; Uric acid

Plasma that has entered Bowman’s capsule

Vasodilation; Sweat secretion; Hairs lie flat, less air trapped

Urethra

Ureter

Usually reabsorbed

Animal that produces its own body heat; Body temp independent of

environment temp

Proximal convoluted tubule

Aorta

Respiration

Diffusion; Transpiration; Through lenticels or stomata;

Leaf fall

CONGRATULATIONS

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Q. State two ways in which the body is insulated against loss of heat.

Abdominal; Abdomen

Carbohydrate; Fat; Fatty acids

Glucose is small and passes through

Fat/Adipose tissue; Trapped air/Hair

Elimination of waste products of metabolism

Piloerection; Vasoconstriction; Brain initiates increased

metabolic rate

Maintaining water/salt balance; Osmoregulation

Liquid part of the blood

Has ducts; Does not produce hormones

Protein; Amino acid

Renal artery

Film of H2O on body surface, heated by the body; water evaporates with the heat,

body left cooler

Too big to pass into Bowman’s capsule

Urea; Salt; Uric acid

Plasma that has entered Bowman’s capsule

Vasodilation; Sweat secretion; Hairs lie flat, less air trapped

Urethra

Ureter

Usually reabsorbed

Animal that produces its own body heat; Body temp independent of

environment temp

Proximal convoluted tubule

Aorta

Respiration

Diffusion; Transpiration; Through lenticels or stomata;

Leaf fall

CONGRATULATIONS

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Q. Describe the ways in which the body responds when its internal temperature rises above the normal level.

Abdominal; Abdomen

Carbohydrate; Fat; Fatty acids

Glucose is small and passes through

Fat/Adipose tissue; Trapped air/Hair

Elimination of waste products of metabolism

Piloerection; Vasoconstriction; Brain initiates increased

metabolic rate

Maintaining water/salt balance; Osmoregulation

Liquid part of the blood

Has ducts; Does not produce hormones

Protein; Amino acid

Renal artery

Film of H2O on body surface, heated by the body; water evaporates with the heat,

body left cooler

Too big to pass into Bowman’s capsule

Urea; Salt; Uric acid

Plasma that has entered Bowman’s capsule

Vasodilation; Sweat secretion; Hairs lie flat, less air trapped

Urethra

Ureter

Usually reabsorbed

Animal that produces its own body heat; Body temp independent of

environment temp

Proximal convoluted tubule

Aorta

Respiration

Diffusion; Transpiration; Through lenticels or stomata;

Leaf fall

CONGRATULATIONS

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Q. Explain briefly how sweating assists in the shedding of excess heat

Abdominal; Abdomen

Carbohydrate; Fat; Fatty acids

Glucose is small and passes through

Fat/Adipose tissue; Trapped air/Hair

Elimination of waste products of metabolism

Piloerection; Vasoconstriction; Brain initiates increased

metabolic rate

Maintaining water/salt balance; Osmoregulation

Liquid part of the blood

Has ducts; Does not produce hormones

Protein; Amino acid

Renal artery

Film of H2O on body surface, heated by the body; water evaporates with the heat,

body left cooler

Too big to pass into Bowman’s capsule

Urea; Salt; Uric acid

Plasma that has entered Bowman’s capsule

Vasodilation; Sweat secretion; Hairs lie flat, less air trapped

Urethra

Ureter

Usually reabsorbed

Animal that produces its own body heat; Body temp independent of

environment temp

Proximal convoluted tubule

Aorta

Respiration

Diffusion; Transpiration; Through lenticels or stomata;

Leaf fall

CONGRATULATIONS

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Q. What is an endotherm?

Abdominal; Abdomen

Carbohydrate; Fat; Fatty acids

Glucose is small and passes through

Fat/Adipose tissue; Trapped air/Hair

Elimination of waste products of metabolism

Piloerection; Vasoconstriction; Brain initiates increased

metabolic rate

Maintaining water/salt balance; Osmoregulation

Liquid part of the blood

Has ducts; Does not produce hormones

Protein; Amino acid

Renal artery

Film of H2O on body surface, heated by the body; water evaporates with the heat,

body left cooler

Too big to pass into Bowman’s capsule

Urea; Salt; Uric acid

Plasma that has entered Bowman’s capsule

Vasodilation; Sweat secretion; Hairs lie flat, less air trapped

Urethra

Ureter

Usually reabsorbed

Animal that produces its own body heat; Body temp independent of

environment temp

Proximal convoluted tubule

Aorta

Respiration

Diffusion; Transpiration; Through lenticels or stomata;

Leaf fall

CONGRATULATIONS

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