Comparative Test 4 (C1)
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The circularoty system acts as both a _____ and a _____.
- Transport system
- Homeostasis maintenance
What are the components of the circulatory system?
- Liquid plasma
- Plasma proteins
Liquid plasma and plasma proteins regulate _____.
Erythrocytes regulate what?
Oxygen and carbon dioxide transfer.
Leucocytes regulate what?
Thrombocytes (platelets) regulate what?
_____ is a major hemopoietic (blood producing) organ.
_____ is embedded in the wall of the digestive tract in lampreys and lungfishes.
What is trabeculae?
dense connective tissue network through which arteries enter the spleen.
_____ is the site of lymphocyte growth in the spleen.
_____ is the site of erythrocyte storage and breakdown in the spleen.
What role do arteries play in the body?
vessels that carry blood from the heart to capillary networks.
_____ are vessels that carry blood to the heart.
_____ is a pump that creates the pressure to drive blood through the vessels.
What is endothelium?
Interior lining of squamous epithelium.
_____ the outer lining is coelomic epithelium?
What is myocardium?
Cardiac muscle and connective tissue.
Cardiac muscle has an inherent rhythm of contraction initiated by _____.
Cardiac muscle has an inherent rhythm of contraction modulated by _____.
autonomic nervous system
What are purkinje fibers?
moified cardiac muscle for conducting impulses between ventricles so a contraction will begin at the bottom of the heart.
Describe the structure of capillaries.
- Walls consist only of endothelium.
- Site of exchange between blood and interstitial fluid.
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