Which of the following arteries is not part of the cerebral arterial circle (circle of Willis)?
A. Anterior communicating artery
B. Internal carotid artery
C. Anterior cerebral artery
D. Posterior cerebellar artery
E. Posterior communicating artery
Answer: D
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Answer the following statements true (T) or false (F)
1. A buoyant force is always directed vertically upward. 2. If weight is equal to buoyant force, a body will sink. 3. It is harder to float in salt water than fresh water. 4. Cyclists drafting will minimize form drag. 5. The Bernoulli Principle explains the inverse relationship between velocity and pressure.
Anterior pituitary acidophil cells secrete:
a. Cortisol b. Growth hormone c. Insulin d. Luteinizing hormone e. Vasopressin
Vasopressin has which of the following actions?
A. increases the water permeability of the thick ascending limb of Henle's loop B. increases the urea permeability of the cortical portion of the collecting duct C. increases the water permeability of the collecting duct D. decreases the GFR E. increases the water permeability of the proximal tubule
Inflammation of the fibrous connective tissue resulting in stiffness and soreness is
A. muscular dystrophy. B. fibrositis. C. fibrosis. D. cramps. E. paralysis.