Smooth muscle lacks
A. myofibrils.
B. transverse tubules and striations.
C. actin and myosin.
D. nuclei and mitochondria.
Answer: B
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When the pH ________, a state of acidosis exists
A) rises above 7 B) falls below 7 C) falls below 6.5 D) falls below 7.35 E) rises above 7.5
These figures show the intrinsic muscles of the right foot. What muscle or group does number 1 indicate?
A. Flexor digitorum brevis B. Abductor digiti minimi C. Abductor hallucis D. Lumbricals E. Interossei
Micturition
A. is another name for urination. B. is a reflex triggered by stretch receptors in the urinary bladder. C. requires the opening of two sphincters. D. requires contraction of the muscularis layer of the urinary bladder. E. All of the choices are correct.
Active neurons need ATP to support all of the following except the
A) movement of materials to the soma by axoplasmic transport. B) synthesis of neurotransmitter molecules. C) movement of materials from the soma by axoplasmic transport. D) opening of voltage-gated channels. E) recovery from action potentials.