The mentalis muscle inserts on the
A) orbicularis oris.
B) skin of the chin.
C) angle of the mouth.
D) hyoid bone.
E) skin around the eyelids.
Answer: B
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Helper T cells secrete several interleukins that serve collectively as a(n):
a. apoptosis factor b. interleukin growth factor c. histamine regulator d. T-cell growth factor e. B-cell growth factor
Which of the following statements regarding bone growth is true?
A. Longitudinal growth continues only as long as the epiphyses exist. B. Circumferential growth continues throughout most of the lifespan. C. both A and B are true D. neither A nor B is true
When ventricular pressure exceeds atrial pressure, the
A. blood is pumped into the atrium. B. ventricle is in diastole. C. atria pump blood into the ventricles. D. AV valves close. E. ejection occurs.
What feature of your ear accounts for its ability to regain its shape after it has been deformed or compressed?
A. The elastic fibers present in the ear's muscles B. The ear has a built-in memory based upon its overall size and shape C. The ear's skin is filled with elastic fibers that contract after being stretched D. There is an abundance of reticular fibers forming a dense meshwork E. The elastic fibers present in the ear's cartilage