What is a key feature of an open circulatory system?
a. No vessels carry the blood.
b. Open-ended vessels carry the blood.
c. Closed vessels carry the blood.
d. No heart pumps the blood.
e. Hemoglobin is carried in the blood.
b
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As you are analyzing the blood sample of a human patient, you note an abnormally high number of erythrocytes. Predict the effects of this situation.
A. The ease of flow for the blood could decrease. B. Immune function would improve. C. More nutrients would reach cells. D. Less oxygen would reach the tissues.
Heavy metals are effective antimicrobial agents but are not widely used because of their high toxicity to humans.
Answer the following statement true (T) or false (F)
Blood passing through the capillary beds of the digestive tract pass through which vessel that takes
blood to the liver? a. inferior vena cava b. abdominal aorta c. hepatic portal vein d. hepatic artery e. hepatic vein
CAM plants
A) occur mostly in rainforests. B) fix carbon dioxide during the night. C) fix carbon dioxide in bundle sheath cells. D) lack stomata.