How do epithelial cells obtain their nutrients?
a. Direct blood supply from an artery
b. Nutrients are delivered by macrophages.
c. Direct blood supply from a vein.
d. Diffusion from adjacent cells.
e. Osmosis of nutrients from underlying tissue.
d
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Place the following events of mitosis in the correct order.
I. Sister chromatids align on the metaphase plate. II. The cleavage furrow forms. III. The nuclear membrane breaks up. IV. Sister chromatids condense. V. Sister chromatids separate. A. I, II, III, IV, V B. III, IV, I, V, II C. IV, III, I, V, II D. III, II, I, IV, V E. IV, I, III, V, II
Which hormone deficiency would lead to a female that is not ovulating?
A. follicle-stimulating hormone B. epinephrine C. cortisol D. testosterone E. calcitonin
Which statement about stress is incorrect?
A) Stress increases as population density increases. B) Stress may trigger the release of specific chemical signals or pheromones. C) Stress can stimulate growth and increase the rate of reproduction. D) Stress may result in increased vulnerability to disease.
The accumulation of fluid at the site of a wound is the result of the secretion of:
A. neutrophils B. leukocytes C. histamines D. kinins