The layer of loose connective tissue deep to the dermis is the
A) epidermis.
B) subcutaneous layer.
C) hyperdermis.
D) deep fascia.
E) reticular layer.
B
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The hilum of the lung
A. is an indented area through which the bronchi, pulmonary vessels, lymphatic vessels, and nerves pass. B. is the point of exit of exhaled air. C. is the point of entrance for inhaled air. D. is an elevated area through which the trachea, pulmonary vessels, and nerves pass. E. serves to anchor all pulmonary structures to the mediastinum.
Identify a second-messenger
a. Insulin b. G protein c. G protein coupled receptor d. Adenylyl cyclase e. None of the above
Tubular secretion
a. refers to the movement of a substance from the peritubular capillary blood into the tubular lumen. b. can occur by active or passive transport mechanisms. c. of K+ occurs in the distal and collecting tubules and is stimulated by aldosterone. d. of organic anions and cations occurs in the proximal tubule by two distinct types of carriers. e. all of these answers.
Which of the following cytoskeleton components moves the chromosomes during cell division?
A) microfilaments B) intermediate filaments C) thick filaments D) microtubules E) basal bodies