Which of the following is/are found only in the PNS?
A. Nerves
B. Astrocytes
C. Unmyelinated axons
D. Myelin
E. Lipofuscin
Answer: A
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Dermatomal maps are important clinically because they
A. can be used to check for motor function. B. locate the position of cranial nerves. C. can be used to help locate nerve damage. D. indicate what muscles are innervated by each spinal nerve. E. can be used to detect cranial nerve damage.
The rectus femoris muscle extends the leg at the __________.
A. ankle B. hip C. elbow D. knee
A sterile male with undeveloped testes, enlarged breasts, and unusually long arms and legs most likely has which syndrome?
A. Patau syndrome B. Turner syndrome C. Klinefelter syndrome D. Fetal alcohol syndrome E. Down syndrome
Visceral reflex arcs differ from somatic in that ________.
A) visceral arcs contain two sensory neurons B) somatic arcs contain one additional component that visceral arcs do not possess C) visceral arcs involve two motor neurons D) visceral arcs do not use integration centers