There are three layers of neurons in the retina. The axons of which of these neuron layers form the optic nerves?
A) rod cells
B) ganglion cells
C) bipolar cells
D) cone cells
B
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A diminished reflex response that may indicate damage to a segment of the spinal cord is a(n) _____ reflex
A. hypoactive B. hyperactive C. diminutive D. ponderous E. excessive
In the membrane "skin " of a cell, what makes up the hydrophobic interior region?
A. Protein filaments B. Fatty acid "tails" C. Carbohydrate chains D. Phosphate "heads"
Place these vessels in the correct order as blood flows into and through the kidney
1. afferent arteriole 2. arcuate artery 3. efferent arteriole 4. glomerulus 5. interlobar artery 6. interlobular (cortical radiate) artery 7. renal artery 8. segmental artery A) 7, 8, 2, 5, 6, 3, 4, 1 B) 7, 8, 6, 2, 5, 1, 5, 3 C) 7, 5, 8, 6, 2, 4, 3, 1 D) 7, 8, 5, 2, 6, 1, 4, 3
Erection and ejaculation can be initiated by
A. manual stimulation of the penis. B. contraction of smooth muscle. C. impulses from the cerebellum. D. increased blood levels of testosterone. E. increased levels of LH and FSH.