Receptors for acetylcholine are located on the
A) synaptic knob.
B) motor end plate.
C) sarcomere.
D) synaptic cleft.
E) transverse tubule.
Answer: B
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Through which structure does blood pass from the right atrium to the right ventricle?
a) Bicuspid valve b) Interventricular septum c) Tricuspid valve d) Mitral valve e) Ascending aorta
Which of the following quantities would be different on the moon than on the earth?
A. acceleration due to gravity B. mass C. both mass and acceleration D. neither mass nor acceleration
Water accounts for 50% of the weight of a young adult female and 60% of a young adult male. What kind of atom is found at "D"?
A. Water molecule B. Polar covalent bond C. Hydrogen bond D. Hydrogen atom E. Oxygen atom
Neutrophils of the blood are derived from a population of stem cells called
A. lymphoblasts. B. proerythroblasts. C. myeloblasts. D. megakaryoblasts. E. monoblasts.