Which blood vessels have the thickest, most elastic walls?
arteries
capillaries
veins
venules
arteries
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Carbon monoxide bonds to hemoglobin more effectively than does oxygen
Indicate whether the statement is true or false
Factors that can cause congenital malformations by affecting an embryo during its
periods of rapid growth and development are called teratogens. Indicate whether the statement is true or false
The lesser omentum is
A) a major portion of the stomach. B) attached to the stomach at the greater curvature. C) important in the digestion of fats. D) a fatty sheet that hangs like an apron over the abdominal viscera. E) a mesentery that extends from the stomach to the liver.
The lens of the eye rounds up or bulges
A. for distant vision. B. when sleeping. C. for close vision. D. when a person is frightened.