In emphysema,
the number of alveoli is reduced.
cartilage rings in the trachea break down.
the diaphragm is paralyzed.
the epiglottis becomes less mobile.
the number of alveoli is reduced.
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This figure shows an intestinal villus. What is the invagination indicated by number 2?
A. Endocrine gland B. Gastric gland C. Peyer patch D. Intestinal gland E. Lymphatic nodule
Which of the following contains overlapping thick and thin filaments?
A. A band B. H band C. I band D. M line E. Z discs
The microcirculation is composed of:
a. arteries, arterioles, and capillaries. b. arterioles, capillaries, and venules. c. arteries, capillaries, and venules. d. arteries, arterioles, and venules. e. none of these answers.
Papillary muscles prevent the AV valves from prolapsing (bulging) excessively into the atria when the ventricles contract
Indicate whether the statement is true or false