Which of these events occurs when a person steps on a tack with the right foot?
A) The right foot is pulled away from the tack because of the Golgi tendon reflex.
B) The left leg is extended to support the body because of the stretch reflex.
C) The flexor muscles of the right thigh contract, and the extensor muscles of the right thigh relax because of reciprocal innervation.
D) Extensor muscles contract in both thighs because of the crossed extensor reflex.
Answer: C) The flexor muscles of the right thigh contract, and the extensor muscles of the right thigh relax because of reciprocal innervation.
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The portion of the sphenoid bone that houses the pituitary gland is the
A. pterygoid process. B. pterygoid plate. C. greater wing. D. lesser wing. E. sella turcica.
Identify the structures innervated by the cervical plexus. Select all that apply.
a. Skin of the face b. Skin of the neck c. Upper limb d. Posterior portion of the head e. Muscles of the hyoid f. Diaphragm
An inhibitory postsynaptic potential (IPSP) can result from the ________.
A. influx of Cl? B. influx of Na+ C. outflow of K+ D. influx of Ca2+ E. Both "influx of Cl? and "outflow of K+" are correct.
Glomerular filtration occurs because glomerular oncotic pressure overrides glomerular blood pressure
Indicate whether the statement is true or false