In the spinal cord the ________ matter is deep to the ________ matter
A) gray; white
B) white; gray
A
Explanation:
B) The inner gray horns are surrounded by the white columns in the spinal cord.
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Which of the following muscles of facial expression is not innervated by the facial nerve?
A. Orbicularis oculi B. Zygomaticus major C. Corrugator supercilii D. Levator palpebrae superioris E. Buccinator
Answer the following questions true (T) or false (F)
1. During the absolute refractory period, production of an additional action potential is not possible no matter how strong the stimulus. 2. Saltatory conduction is slow due to the presence of insulating myelin around an axon. 3. Conduction speed of a nerve impulse is influenced by the diameter of the axon and the presence or absence of a myelin sheath.
Identify the correct statement(s)
a. Bowman's capsule hydrostatic pressure opposes filtration. b. The glomerular filtration rate is limited by a Tm. c. All of the plasma that enters the glomerulus is filtered. d. Both b and c e. a, b, and c
Which of the following occurs during depolarization?
A) Voltage-gated potassium channels open. B) Some voltage-gated sodium channels inactivate. C) Sodium flows into the cell. D) Both A and C occur. E) All of the above occur.