As they extend from the retina to the brain, the nerve fibers
A) from the nasal half of each retina cross over.
B) all cross over.
C) do not cross over.
D) from the temporal half of each retina cross over.
A
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This figure shows a palmar view of the hand. What muscle does the number 2 indicate?
A. Abductor pollicis brevis B. Flexor digiti minimi brevis C. Opponens pollicis D. Adductor pollicis E. Lumbrical
Which of the following would disqualify a chemical messenger from being considered a paracrine signal?
a. It is an organic molecule. b. It is not transported in the blood. c. It affects the cell that released it. d. Once released, it is distributed to its target(s) by simple diffusion. e. It is released as a specific response to a signal.
Why are pregnant Rh- women given an injection of Rh immune globulin?
A. Antibodies in the injection bind fetal RBC antigens so they cannot stimulate her immune system to produce anti-D antibodies. B. Antibodies in the injection bind fetal RBC antigens so they cannot stimulate her immune system to produce anti-B antibodies. C. Antibodies in the injection bind fetal RBC antigens so they cannot stimulate her immune system to produce anti-A and anti-B antibodies. D. Antibodies in the injection bind fetal RBC antigens so they cannot stimulate her immune system to produce anti-A antibodies. E. Antibodies in the injection bind fetal RBC antigens so they cannot stimulate her immune system to produce anti-O antibodies.
To prevent the tissues from becoming edematous, the __________ system must absorb excess fluid and return it to the central venous circulation.
A. lymphatic B. endocrine C. hematologic D. cardiovascular