How do basophils respond to tissue damage?
A) Basophils enter damaged tissue first and in high numbers to engulf the pathogens and debris and release cytotoxic enzymes and chemicals that attract other WBCs to the region.
B) Basophils enter damaged tissue and release a variety of chemicals, including histamine, which promotes inflammation.
C) Basophils enter damaged tissue and engulf antibody-labeled materials, release cytotoxic enzymes, and reduce inflammation.
D) Basophils enter damaged tissue and become macrophages which engulf pathogens or debris.
E) Basophils provide defense against specific pathogens or toxins by becoming B plasma cells, which produce antibodies.
Answer: B
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A) hormones working together produce a larger effect than predicted. B) a hormone can exert its full effects only in the presence of another hormone. C) one hormone inhibits the release of a second hormone. D) hormones working together produce a smaller effect than predicted. E) one hormone triggers the secretion of a second hormone.
In response to rising blood calcium levels, the parafollicular cells of the thyroid will secrete which hormone?
A) Calcitonin B) Parathyroid hormone C) T3 D) T4
The primary stimulus for release of adrenal medullary hormones comes from ________.
A. the kidneys B. aldosterone C. the parasympathetic nervous system D. the anterior pituitary E. the sympathetic nervous system
The presence of vitamin D is necessary for PTH to exert its effect on promoting intestinal Ca2+ absorption
Indicate whether the statement is true or false