The cusps (leaflets) of atrioventricular valves attach directly to
A) papillary muscles.
B) trabeculae carneae.
C) chordae tendineae.
D) interatrial septa.
E) coronary sulci.
C
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The chemical curare is a nicotinic receptor antagonist. How will curare affect skeletal muscle function?
A. It activates an autoimmune disease that destroys myelin. B. It will cause spastic paralysis (sustained, unwanted muscle contraction). C. It will cause persistent twitches with short periods of rest in between. D. It will cause flaccid paralysis (no muscle contraction possible). E. Muscle function is fine, but it will cause a loss of voluntary control.
A patient has an infected puncture wound to her foot. Which type of white blood cell would you expect to be elevated in a differential white cell count?
A) neutrophils B) eosinophils C) basophils D) lymphocytes E) monocytes
The secondary oocyte completes the second meiotic division when
A. the mature follicle ruptures. B. it is penetrated by a sperm cell. C. it receives both estrogen and progesterone. D. ovulation occurs. E. it is implanted in the uterus.
Two organs that help detect low blood cell numbers and produce hormones to correct this are the ________.
A. kidney and liver B. bone marrow and gall bladder C. liver and spleen D. brainstem and heart