Regarding the typical structure of blood vessel walls, those that have only a tunica intima are the
A) arteries.
B) arterioles.
C) veins.
D) venules.
E) capillaries.
E) capillaries.
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At the point of injury, platelets:
a. become sticky and accumulate near the opening b. release thrombin c. release fibrin d. both A and C above
Which statement about the effect of age on the lymphatic-immune system is not true?
A. Red bone marrow mass decreases. B. The level of thymic hormones decreases. C. There are fewer helper T cells. D. There are fewer antigen-presenting cells. E. The thymus gland enlarges.
Development and maintenance of the male body configuration results from the general protein anabolic effect of testosterone
Indicate whether the statement is true or false
An osteoblast becomes surrounded by its own matrix and entrapped in a lacuna creating a mature bone cell called a(n) ____
What will be an ideal response?