During radical neck surgery for cancer, the surgeon inadvertently cut the cervical branch of the facial nerve. Which of the following signs would not be observed in the patient?
A) sagging of the skin of the neck on the ipsilateral side
B) reduced ability to convey some facial expressions
C) reduced force in ability to open mandible against resistance
D) reduced sensation on the skin of the neck of the ipsilateral side
E) reduced skin tension overlying the superior aspects of the deltoid and pectoralis major muscles
Ans: D
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Myelin sheaths in the CNS are formed by which of the following cells?
A. Schwann cells B. Ependymal cells C. Microglia D. Astrocytes E. Oligodendrocytes
Muscles that are used for precisely controlled movements generally contain large motor units
Indicate whether this statement is true or false.
Which of the choices below exerts primary control over sodium levels in the body?
A) glucocorticoids B) aldosterone C) water levels D) ADH
Which of the class(es) of hormones interacts with DNA?
a. proteins. b. catecholamines. c. steroids. d. amines e. both (a) and (b) above.