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Frog Disection
Beginning of essay
Frogs have a mouth, which serves as an insect trap. The mouth, consist of a tongue and two sets of special teeth. The frog has a large elastic gullet that allows it to swallow large prey. Food passes from the gullet through the tubular esophagus and then into the stomach. Then chemical digestion oc ....
Middle of essay
...., veins and capillaries that reach all the living cells of an organism. (Cooper, H., Hays, S., Walker D., Linden R. 1982)
The frog’s heart consists of three chambers. The left atrium receives "oxygenated" oxygen rich blood from the lungs, while the right atrium receives "deoxygenated" oxygen poor blood, which returns from the body tissues. As the two atria pump, together blood from each atrium, it forces into a muscular ventricle. When the ventricle contracts, it forces blood through a .... |
| Number of words: 838 |
Approximate pages: 4 |
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