The dermis
A. functions as padding and insulation.
B. is divided into three distinct layers.
C. does not contain connective tissue.
D. contains no blood vessels.
E. is responsible for most of the skin's structural strength.
Answer: E
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Which of the following would cause stroke volume to increase?
A) when venous return is decreased B) when ventricular contraction is reduced C) drugs that stimulate beta-1 receptors D) decrease in heart rate E) decreased sympathetic stimulation
Conscious perception of vision probably reflects activity in the ________
A) superior colliculus B) thalamus C) chiasma D) occipital lobe of the cortex
Contraction of the cremaster muscle
A) moves the testis closer to the body cavity. B) propels sperm through the urethra. C) produces an erection. D) moves sperm through the ductus deferens. E) None of the answers are correct.
Put the following in the correct order after the blood pressure increases
(1) decreased sympathetic stimulation (2) increase in glomerulus filtration rate (3) increase in arterial blood pressure (4) increase in urine production (5) afferent arterioles dilate A. 1, 3, 5, 2, 4 B. 3, 2, 1, 5, 4 C. 2, 3, 5, 1, 4 D. 3, 1, 5, 2, 4 E. 3, 2, 5, 4, 1