Which of the following cells is largely responsible for skin color?
A) Melanocyte
B) Merkel cell
C) Dead keratinocyte
D) Keratinocyte
E) Dendritic cell
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Question 2) Which of these has the highest H+ concentration?
A) Saliva, pH = 6.6
B) Tomato juice, pH = 4.7
C) Red wine, pH = 3.2
D) Household ammonia, pH = 10.8
E) Lemon juice, pH = 2.3
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Question 3) What determines breast size?
A) The amount of collagenous fiber
B) Muscle tone
C) The amount of mammary gland tissue
D) The amount of adipose tissue
E) The size of lactiferous sinuses
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Question 4) The ________ originates on the zygomatic arch and inserts on the angle of the mandible.
A) genioglossus
B) buccinator
C) stylohyoid
D) temporalis
E) masseter
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Question 5) Antigen-presenting cells usually display processed antigens to T cells in the ________.
A) thymus
B) liver
C) blood plasma
D) red bone marrow
E) lymph nodes
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Question 6) The sensitivity of the muscle spindle is maintained by ________.
A) anulospiral endings
B) secondary afferent (group II) fibers
C) alpha motor neurons
D) a stretch reflex
E) gamma motor neurons
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Question 7) Which of the following statements about diabetes mellitus is false?
A) Target cells are unresponsive to insulin in type II DM.
B) The body produces autoantibodies that destroy the pancreatic beta cells in type I DM.
C) Type II DM is more common than type I DM.
D) Diabetic neuropathy is a common long term effect of DM.
E) Both type I and type II DM are characterized by lack of, or low levels of, insulin.
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Question 8) The oral phase of swallowing is under ________ control and the pharyngo-esophageal phase is ________.
A) voluntary; also voluntary
B) involuntary; also involuntary
C) central nervous system; controlled by autonomic reflexes
D) central nervous system; also controlled by the central nervous system
E) autonomic nervous system; controlled by autonomic reflexes
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Question 9) A point of convergence for several muscles of the lower face is the ________.
A) galea
B) modiolus
C) retinaculum
D) nuchal line
E) aponeurotica
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Question 10) The swallowing center is located in the ________.
A) medulla oblongata
B) enteric nervous system
C) oropharynx
D) esophagus
E) mouth
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