A motor unit consists of
A) one skeletal muscle fiber and all the neurons that control that fiber.
B) one neuron and all the skeletal muscle fibers it controls.
C) one skeletal muscle fiber and the neuron that controls that fiber.
D) one axon terminal branch and the myofibrils it controls.
B) one neuron and all the skeletal muscle fibers it controls.
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Indicate whether this statement is true or false.
Which of the following does the hypothalamus not help control?
A. Sex drive B. Hunger C. Sleepiness D. Speech E. Blood pressure
Intervertebral discs are formed of skeletal muscle
Indicate whether the statement is true or false
Which structure in the fetus enables blood to bypass the lungs and pass directly from the right atrium to the left atrium?
A. Truncus arteriosus B. Foramen ovale C. Sinus venosus D. Bulbus cordis E. Ductus arteriosus