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Your Body Systems
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Your Body Systems
Warm-Up Questions
CPS Questions 1-2
Chapter 3, Lesson 1
Chapter Overview
Lesson 1: Your Body Systems Lesson 2: Nutrition Lesson 3: The Benefits of Physical Activity Lesson 4: Understanding Your Body Image Lesson 5: First Aid
Chapter 3, Lesson 1
Lesson Overview
Functions of the human skeletal system How your muscular system works The human circulatory system The human respiratory system How the nervous system and sense organs work The human digestive system The body’s waste disposal system
Chapter 3, Lesson 1
Quick Write
The human body is made up of several different systems that work together as one unit. What do you think is the most
amazing thing about how your body works?
(Note to teacher: Use “Pick a Student” button in CPS)
Chapter 3, Lesson 1 Photo Courtesy of Fotolia
The Human Skeletal System
Your body’s framework Three main functions:
Support and protection Movement Storage and production of
materials
Chapter 3, Lesson 1 Photo Courtesy of Fotolia
Kinds of Bones
Your body has more than 200 bones Four basic kinds of bones
Long bones Short bones Flat bones Irregular bones
Long bones have larger ends that form a joint with another bone
Chapter 3, Lesson 1 Photo Courtesy of Fotolia
Caring for Your Skeletal System
Eat food with nutrients and vitamins Phosphorus is in dairy products, dark
green leafy vegetables, beans, and whole grains
Milk is fortified with vitamin D and contains calcium
Do regular physical activity to strengthen bones
Chapter 3, Lesson 1 Photo Courtesy of Fotolia
Activity 1: The Skeletal System
Review the section in your textbook on the functions of the human skeletal system
Complete the table to describe the three main functions of the skeletal system and answer the questions
Chapter 3, Lesson 1
Types of Muscles
Smooth Skeletal Cardiac
Chapter 3, Lesson 1 Photo Courtesy of Fotolia
The Muscular System
All body movements depend on muscles
Your body has about 600 muscles Exercise and healthy eating are
important for good muscle tone To keep your muscles strong and
healthy, do daily regular physical activity
Chapter 3, Lesson 1 Photo Courtesy of Fotolia
Learning Check Questions
CPS Questions 3-4
Chapter 3, Lesson 1
Activity 2: Muscle Injuries
Research and locate a news article about a specific muscle injury
Identify the injury, medical evaluation, and treatment
Take notes and answer the question
Chapter 3, Lesson 1
The Human Circulatory System
Your body’s transportation system Blood carries food and oxygen to
every cell Blood is made up of:
Red blood cells White blood cells Platelets
Chapter 3, Lesson 1 Photo Courtesy of Fotolia
The Human Circulatory System, cont.
Your heart pumps blood to all parts of your body
Average heart beats 72 times a minute Blood vessels distribute blood
throughout your body Three kinds of blood vessels
Arteries Capillaries Veins
Chapter 3, Lesson 1 Photo Courtesy of Fotolia
Preventing High Blood Pressure
Need to keep a certain level of blood pressure for proper blood circulation Maintain a healthy weight
through a healthy diet Exercise regularly Avoid tobacco, alcohol,
and drugs
Chapter 3, Lesson 1 Photo Courtesy of Fotolia
Activity 3: The Circulatory System
Review the section in your textbook on the human circulatory system
Answer the questions
Chapter 3, Lesson 1
The Human Respiratory System
Brings a constant supply of oxygen from air into your body
Gets oxygen into your body Also gets rid of carbon dioxide, a
waste product
Chapter 3, Lesson 1 Photo Courtesy of Fotolia
Learning Check Questions
CPS Questions 5-6
Chapter 3, Lesson 1
Activity 4: The Respiratory System
Review the section in your textbook on the respiratory system
Match each term to its correct definition
Answer the questions
Chapter 3, Lesson 1
The Nervous System
Central nervous system Made up of the brain and the
spinal cord The brain has three main parts:
the cerebrum, cerebellum, and brain stem
Peripheral nervous system Carries messages between your
brain and spinal cord and the rest of your body
Chapter 3, Lesson 1 Photo Courtesy of Fotolia
The Sense of Sight
Light enters the eye through the cornea
The cornea sends the light to the pupil The lens helps direct the light energy
onto the retina Entire process happens faster than you
can blink
Chapter 3, Lesson 1 Photo Courtesy of Fotolia
The Sense of Hearing
Outer ear picks up air vibrations and sends them to your eardrum
Your brain interprets the message and tells you what kind of sound you have heard
All of this happens in the time it takes for the sound to be made
Chapter 3, Lesson 1 Photo Courtesy of Fotolia
The Senses of Smell and Taste
Nose Receptor cells send messages
through nerves Can pick up thousands of
different odors Tongue
Can recognize only four kinds of taste: sweet, salty, sour, and bitter
Chapter 3, Lesson 1 Photo Courtesy of Fotolia
The Sense of Touch
Your skin is your body’s largest organ Sense receptors all over your skin receive
different sensations Sense receptors send messages through
the nerves to your spinal cord and brain
Chapter 3, Lesson 1 Photo Courtesy of Fotolia
Activity 5: The Brain and the Senses
Review the section in your textbook on how the nervous system and sense organs work
Complete the tables to describe the functions and other characteristics of the brain and senses
Chapter 3, Lesson 1
The Human Digestive System
The digestive system breaks down food for your body’s use
Chewing is part of mechanical digestion
The enzyme in saliva begins to break down the food chemically
Food stays in your stomach for three to four hours
Chapter 3, Lesson 1 Photo Courtesy of Fotolia
Diabetes
One of the most serious medical issues Americans face today
Type I Cells in the pancreas are
not able to produce insulin Type II
Pancreas makes insulin but your body cells cannot use the insulin properly
Chapter 3, Lesson 1 Photo Courtesy of Fotolia
Chapter 3, Lesson 1
Learning Check Questions
CPS Questions 7-8
The Body’s Waste Disposal System
Waste products must be removed from the body
The body disposes of waste solids and liquids through the excretory system Solid material is removed
through the large intestine Liquid material is removed
through the kidneysChapter 3, Lesson 1 Photo Courtesy of Fotolia
Activity 6: The Digestive and Excretory Systems
Review the sections in your textbook on the human digestive system and the body’s waste disposal system
Label the diagrams and answer the questions
Chapter 3, Lesson 1
Summary
Functions of the human skeletal system How your muscular system works The human circulatory system The human respiratory system How the nervous system and sense organs work The human digestive system The body’s waste disposal system
Chapter 3, Lesson 1
Chapter 3, Lesson 1
Review Questions
CPS Questions 9-10
(Note to teacher: Use “Pick a Student” button in CPS)
Next….
Done – your body systems
Next – nutrition
Chapter 3, Lesson 1 Photo Courtesy of Fotolia
