BIOS 252 weeks 3 and 4

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BIOS 252 weeks 3 and 4

• Which of the following is not considered a region of the spinal cord?

–Answer Pelvic

• The spinal cord is housed within which structure?

–Answer The vertebral canal

• An image of the cross-section of a spinal cord would show anterior (or ventral) horns. What

is in that region?–Answer Cell bodies of motor neurons

• Which of the following is not a function associated with the spinal cord?

–Answer - Integrate sensory information at the conscious level

• Voluntary motor impulses leave the spinal cord via the of

gray matter.–Answer Anterior horn

• Epineurium forms the covering of the nerve.

–Answer outter

• Spinal nerves are what kind of nerves?

–Answer mixed nerves

• The dorsal root of spinal nerve contains

–Answer

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–Answer only sensory fibers

• The specific patch of skin that is innervated by a specific spinal nerve is called a(n) .

–Answer dermatome

• A disease that damages the cells of the anterior gray horn will

–Answer Cause paralysis or weakness in skeletal muscles

• Which spinal cord plexus supplies the abdominal wall?

–Answer

• While playing rugby, Sonny is tackled hard. As he tries to get up, he finds that he has

difficulty flexing and adducting his left thigh and extending his left leg. Which nerve innervating the lower limb may be damaged?–Answer Femoral Nerve

• Which of the following conveys sensory information to the brain and spinal cord?

–Answer The afferent division of the peripheral nervous system

• An unlearned and involuntary but predictable motor response to a stimulus that is rapid and

does not involve any processing by the brain –Answer

–Answer Spinal Reflex

• A reflex that causes reciprocal activation of the antagonist muscle is the

–Answer crossed-extensor

• What do neurons in the precentral gyrus do?

–Answer They allow conscious control of skilled voluntary muscle movements

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