Chapter 16 Flashcards
The anterior roots contain ____________ axons, while the posterior roots contain _____________ axons.
motor, sensory
True or False: The spinal cord functions as a pathway for motor impulses, but sensory impulses travel directly to the brain, entering the brain between the C1 vertebrae and the occipital bone.
False
Put the events involved with a reflex arc in order:
1. information is processed in the integration center by interneurons.
2. Sensory neurons conduct impulses from the receptor to the spinal cord.
3. Motor neuron transmits nerve impulse to effector.
4. Effector responds to nerve impulse from motor neuron.
5. Sensory receptors respond to external and internal stimuli.
5-2-1-3-4
Which is true of the anterior horns of the spinal cord?
-They serve as communication routes between left and right sides.
-They house cell bodies of somatic motor neurons.
-They house cell bodies of autonomic motor neurons.
-They house cell bodies of sensory neurons.
-They house cell bodies of somatic motor neurons.
Which of the following is not an example of a reflex?
-Flinching when you see an object coming rapidly toward your face
-Quickly putting out your arms when you suddenly lose your balance
-Pulling your hand back from a hot burner immediately after touching it
-Closing your eyes in anticipation of receiving a shot
-Closing your eyes in anticipation of receiving a shot
True or False: All reflexes share the property of being an involuntary response.
True
A spinal nerve splits into ___ branches.
Two
True or False: Each anterior root and corresponding posterior root unite within the intervertebral foramen to become a spinal nerve.
True
The spinal cord is partitioned into an inner __________ matter region, and an outer ___________ matter region.
gray, matter
Check all that are components of a monosynaptic reflex arc.
-Interneurons
-Sensory receptors
-Motor neurons
-motor neuron
-sensory receptors
