Bio/100 Appendix E Comparing Physiology Worksheet Essay

1450 Words May 31st, 2013 6 Pages
Associate Level Material
Appendix E

Comparing Physiology Worksheet

In this assignment you describe and compare the circulatory, skeletal, and respiratory systems of sharks, iguanas, eagles, and humans. Answer each of the following questions in 25 to 50 words.

Circulatory System

* Shark

* How would you describe the structure and function of this animal’s circulatory system? Include any unique characteristics. A shark’s heart is a two-chambered S-shaped tube, small in proportion to body size located in the head region.

* How does this animal’s circulatory system work?
The blood is pumped by the heart through the afferent bronchial arteries to capillaries in the gills, where the blood is oxygenated). The blood
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* What is similar in all of these respiratory systems? I think the similarity is that the respiratory system of all animals here is for the blood flow of the body.

* What is different in all of these respiratory systems? I think the differences on these respiratory systems are that some animals have it on the outside of their body and some have it on the inside of their bodies.

Skeletal System

* Shark

* How would you describe the structure and function of this animal’s skeletal system? Include any unique characteristics. Sharks possess an internal skeleton. A shark’s skeleton differs from that of other fish because it is composed entirely of cartilage. Cartilage is a strong and durable material but also light weight and relatively flexible.

* How does this animal’s skeletal system work?
These characteristics aid in the general movements of the shark in a variety of ways. For example, cartilage is lighter than bone and helps keep the shark from sinking (since a shark has no swim bladder for buoyancy like other fish) and allows the shark to turn in a tighter radius than other fish. Cartilage found in the jaws and backbones of sharks require more strength then the cartilage found in the fins. These areas are strengthened with calcium salts forming a "calcified cartilage" which has similar strength characteristics of bone without the added weight.

* Iguana

*

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