When the upper limb is raised, and the pressure cuff inflated, blood flow to the forearm is stopped, and the hand ________
A) has a blue color B) turns very pale
C) first turns red, then becomes white D) flushes red
Answer: B
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The vitreous body
A) fills the anterior chamber. B) helps to stabilize the eye and holds the retina up against the eyewall. C) is replaced at the rate of 20 percent per year until middle age. D) circulates through the pupil. E) holds the retina against the lens for proper refraction.
Which of the following is a monosynaptic reflex?
a. stretch reflex b. withdrawal reflex c. crossed-extensor reflexes d. All of the above e. Only c and d
The ________ is/are the origin of all leukocytes
a. lymph nodes b. spleen c. tonsils d. bone marrow e. thymus
The secretions of merocrine and apocrine sweat glands differ in that apocrine sweat ________
A) contains proteins that, when combined with bacteria on the surface of the skin, produce a distinct odor B) is composed of water and electrolytes and participates in the temperature regulation process C) is a secretion of eccrine sweat glands D) determines the amount of pigment proteins produced by skin cells