Reactive hyperemia is triggered by
A) local accumulation of paracrines due to reduced blood flow.
B) reflex contraction of smooth muscle following a period of dilation.
C) toxins or allergens, such as bee venom or pollen.
D) stress and the hormones released during stress.
E) None of the answers are correct.
A) local accumulation of paracrines due to reduced blood flow.
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Thyroid-stimulating hormone (TSH) is secreted by the
A. hypothalamus, and it targets cells of the posterior pituitary gland B. hypothalamus, and it targets cells of the anterior pituitary gland. C. anterior pituitary, and it targets follicular cells of the thyroid gland. D. posterior pituitary, and it targets parafollicular cells of the thyroid gland. E. thyroid gland, and it targets cells of the parathyroid gland.
The layer of loose connective tissue that directly supports the digestive epithelium is the
A) lamina propria. B) muscularis mucosae. C) submucosa. D) submucosal plexus. E) myenteric plexus.
A single layer of flattened epithelium forms a tissue called ______ ______
_____. Fill in the blank(s) with correct word
Antibody functions include
A. enhancing memory. B. participating in costimulation. C. activating antigens. D. initiating inflammation and enhancing phagocytosis. E. stimulating proteins production by T helper cells.