What is not true about the cerebral arterial circle (circle of Willis)?
A) It surrounds the brain stem.
B) It may provide an alternative set of pathways for blood to reach brain tissue.
C) It is an example of an anastomosis.
D) It lies at the base of the brain.
Answer: A
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Which of the following would cause a decrease in the excretion of Na+ and water?
A. Increased mean arterial blood pressure B. Decreased aldosterone secretion C. Increased atrial distension D. Increased hydrostatic pressure in the afferent renal arterioles E. Decreased atrial natriuretic peptide secretion
The remodeling of bone tissue is a function of
A. chondrocyte and osteocyte activity. B. chondroblast and osteoclast activity. C. osteoclast and osteocyte activity. D. osteoblast and osteoclast activity. E. fibroblast and chondroblast activity.
Which of the following would not promote reabsorption from the venous end of the capillary bed?
A) increasing solute concentration in the nearby interstitial fluid B) decreasing hydrostatic pressure of the blood. C) reducing solute concentration in the nearby interstitial fluid D) increasing solute concentration in the plasma of the circulating blood
The carotid arteries supply blood to the head
Indicate whether the statement is true or false