Comparison of the systems

Topics: Blood, Heart, Blood vessel Pages: 4 (1238 words) Published: April 21, 2014
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. The shark’s heart which is a major component in its circulatory system is shaped like an S and is located in the head region. The sharks hear has 2 chambers and atrium and a ventricle. Blood is pumped by the heart through the afferent brachial arteries to capillaries in the gills where the blood is oxygenated.

How does this animal’s circulatory system work? The circulatory system centers around the heart where blood is pumped through arteries then through tissues of the body to distribute nutrients throughout the body and back to the heart.

Iguana

How would you describe the structure and function of this animal’s circulatory system? Include any unique characteristics. The Iguana has a unique situation when it comes to the circulatory system because the Iguana has a 3 chamber heart. Two of the chambers of the Iguana's heart are atria and one is ventricle. The ventricle has the job of keeping oxygenated blood from being mixed in with de-oxygenated blood.

How does this animal’s circulatory system work?Since the Iguana has a 3 chambered heart it would not be uncommon for the Iguana to have a circulatory system that is double. Because the Iguana has a double circulatory system this causes blood to have to pass through the heart twice. Blood first flows from the heart of the Iguana to the lungs and then back to the heart where it is then distributed throughout the Iguana's body using tissues, after the blood leaves tissues it flows back to the heart.

Eagle

How would you describe the structure and function of this...
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