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Mr. Williams Mr. Williams Frog Dissection ReviewFrog Dissection Review
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This membrane protects the eye
• Nictitating
• Pericardium
• Tympanum
• Villi
This membrane detects vibrations
• Nictitating
• Pericardium
• Tympanum
• Villi
All amphibians are
• Endothermic
• Ectothermic
How many chambers are in an amphibian heart?
• 2
• 3
• 4
An amphibian heart has no left or right ventricle
• True
• False
These aid digestion in the stomach
• Villi
• Ridges
These increase surface area in the small intestine
• Villi
• Ridges
The liver produces this substance to break down fats
• Bile
• Insulin
Bile is stored in the
• Pancreas
• Gall bladder
A frog’s tongue is…
• Very long and attached at the front
• Somewhat short and wide, attached at the front
A frog will use their teeth to
• Crush and chew food
• Hold their prey until swallowing it whole
• Frogs do not have teeth
This large organ must be removed to view others
• Liver
• Stomach
Why do amphibians have small lungs?
• Because they formed from gills
• Because amphibians obtain large amounts of oxygen through their skin
Why are amphibians sometimes describe as “dual life?”
• They can live on land or water
• They begin life with gills then develop lungs
Amphibians are in which phylum?
• Vertebrate
• Chordata
Frogs and toads belong to
• Anura
• Urodela
• Apoda
Which order are legless and rare?
• Anura
• Urodela
• Apoda
Circulation between heart and gills/lungs
• Systemic
• Pulmonary
Which is longer?
• Large intestine
• Small intestine
Which absorbs nutrients?
• Large intestine
• Small intestine
Thin membrane that connects the small intestines
• Pericardium
• Mesentery
• Nictitating
• Tympanum
Thin membrane that covers the heart
• Pericardium
• Mesentery
• Nictitating
• Tympanum
Frog lungs are very thick and large
• True
• False
A probe inserted into this opening will lead to the
tympanum• Nares
• Eustachian tubes
Which part of the amphibian heart does blood low in oxygen enter first?
• Right atrium
• Left atrium
• Ventricle
Aestivation is…
• When amphibians lay eggs
• When some amphibians change their metabolism and behaviors to survive extreme droughts
The largest amphibian
• American bullfrog
• Japanese Salamander
The cerebrum is for ..
• Movement
• Memory
If you found toad eggs they would look like..
• Large masses and clumps
• Strands or chains
Why does blood low and high in oxygen mix in the amphibian ventricle?
• Because amphibians had gills at some stage in their life
• Because amphibians can obtain oxygen through their skin
All vertebrates have a cloaca
• True
• False
Which part of the brain is for smell?
• Cerebellum
• Medulla
• Olfactory lobes
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