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Bio124
Chpt 34
9
Biology
Undergraduate 2
01/14/2009

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Term
Explain the functions of the circulatory system
Definition
1. delivers oxygen and nutrients to deep cells
2. removes waste & CO2 from deep cells
Term
Name the different circulatory systems of invertebrates.
Definition
No circulatory system, open circulatory sytem, closed circulatory system
Term
Explain the difference btwn open and closed circulatory systems
Definition
open - hemolymph, few vessels, hemolymph outside of vessels, in anthropods
closed - blood, vessels, blood only in vessels, ex. earthworms
Term
Describe 2-chambered heart.
Definition
1 atrium, 1 ventricle, single-loop, found in fish
Term
Describe 3-chambered heart
Definition
2 atria, 1 ventricle, double loop, bad b/c it mixes 02 rich blood w/ 02 poor blood, found in some reptiles
Term
Describe 4-chambered heart.
Definition
2 atria, 2 ventricles, no mix of bad and good 02 blood, found in mammals
Term
Describe the pathway of blood through the heart.
Definition
body-rt atrium-rt ventricle-pulmonary trunk-lungs-lft atruim-lft ventricle-aorta-back to body
Term
Name the functions of blood.
Definition
transports nutrients, gas, and waste.
serves as a buffer to maintain pH levels
clotting and defense
Term
Name the components of blood.
Definition
red blood cells, white blood cells, platelets, plasma
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