What does the regeneration tube of a peripheral nerve fiber consist of?
A. Schwann cells and astrocytes
B. The axolemma and neurilemma
C. The myelin sheath and neurilemma
D. The neurilemma and endoneurium
E. Satellite cells and oligodendrocytes
Answer: D
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Activation of sympathetic nerves that innervate lung tissue results in
A. bronchoconstriction. B. bronchodilation.
Explain the role of the skin in negative feedback pathway regulating body temperature homeostasis
A) Sensory receptors in the dermis detect changes in the environmental temperature and send afferent messages to the thermoregulatory center. B) Involuntary contractions of the arrector pili muscles increase internal body temperature. C) Integration of stimulus and response to changing environmental temperatures takes place in the skin. D) Sensory receptors send information in anticipation of changes in environmental temperature.
All of the muscles listed, except one, are innervated by the deep fibular nerve. Select the exception.
A. Extensor digitorum longus B. Fibularis tertius C. Tibialis anterior D. Extensor hallucis longus E. Gastrocnemius
Of the lymphatic trunks, which ones drain lymph from deep thoracic structures?
A. Lumbar trunks B. Subclavian trunks C. Bronchomediastinal trunks D. Intestinal trunks E. Jugular trunks