Muscle fibers are bundled into groups known as
A) myotendrils.
B) endomysium.
C) myosin.
D) fascicles.
Answer: D) fascicles.
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The typical cell making up the alveolar wall is the
A. alveolar type II cell. B. septal cell. C. alveolar type I cell. D. dust cells. E. alveolar macrophages.
All of the following are characteristics of anaphylaxis except
A) the first exposure does not always lead to a reaction. B) IgE antibodies are produced. C) symptoms include capillary dilation, airway constriction, pain and itching. D) helper T cells are destroyed. E) sensitized mast cells and basophils are stimulated upon each exposure to an allergen.
Breathing is regulated mainly by response to the level of _____ detected in the blood.
Fill in the blank(s) with the appropriate word(s).
The absence of iodine in the diet leads to ________
A) hypoparathyroidism B) hypoxemia C) hypocalcemia D) hypothyroidism E) hypoglycemia