Which structure is a bundle of smooth muscle fibers that are attached to the hair follicle?
a. cuticle
b. root
c. medulla
d. arrector pili
d
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Potent platelet aggregates that attract more platelets to the site of an injury are ________ and ________.
Fill in the blank(s) with the appropriate word(s).
Which type of immunity defends against any type of invader?
a) Nonspecific b) Specific c) Cell mediated d) Antibody mediated immunity e) None of these choices
Which statement correctly describes kyphosis?
A. Lateral curvature of the spine B. Exaggerated abnormal curvature of the thoracic vertebrae C. Exaggerated curvature of the lumbar vertebrae D. Swayback
The phasic Ia stretch reflex:
A. has a polysynaptic reflex arc B. acts to maintain a constant level of tension in the muscle C. is initiated by a receptor that lies in series with the extrafusal fibers D. has its sensitivity controlled by the gamma motor neuron system