The cranial nerve with a cervical origin (spinal cord) is the ________
A) hypoglossal
B) vagus
C) glossopharyngeal
D) accessory
D
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Which of the following is not a feature of skeletal muscle?
A. Autorhythmicity B. Excitability C. Extensibility D. Conductivity E. Contractility
Muscle myofibrils
A. contain myosin and actin myofilaments. B. hold muscle fibers together. C. are found in the sarcolemma. D. do not appear striated. E. extend from the sarcolemma to the T-tubule.
Men have one rib fewer than women.
Answer the following statement true (T) or false (F)
Which of the following events occurs during the lag phase of a muscle twitch?
A. Muscle fibers shorten. B. Cross-bridges form, move, release, and reform many times. C. The action potential is propagated from presynaptic to postsynaptic membrane. D. Calcium is pumped back into the sarcoplasmic reticulum. E. All of these events occur in the lag phase.