Human Anatomy
9th Edition
ISBN: 9780135168059
Author: Marieb, Elaine Nicpon, Brady, Patricia, Mallatt, Jon
Publisher: Pearson Education, Inc.,
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Textbook Question
Chapter 12, Problem 11RQ
Afferent neurons of the PNS synapse in the CNS with (a) axons in the white matter, (b) neuron cell. bodies in the gray matter, (c) neuron cell bodies in the white matter, (d) axons in the gray matter.
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The CNS interprets sensory information entirely on the basis of the, (a) strength of the action potential. (b) number of action potentials. (c) area of brain stimulated. (d) a, b, and c are correct.
Afferent neurons of the PNS synapse in the CNS with (a) axons in the white matter, (b) neuron cell bodies in the gray matter, (c) neuron cell bodies in the white matter, (d) axons in the gray matter.
(a) What is myelin? (b) How does the myelination process differ in the CNS and PNS?
Chapter 12 Solutions
Human Anatomy
Ch. 12 - In which direction are afferent signals carried?...Ch. 12 - What subdivision of the nervous system regulates...Ch. 12 - What type of sensation is (a) pain from a pulled...Ch. 12 - Which type of neuron process receives stimuli?Ch. 12 - Describe how the electrical impulse from one...Ch. 12 - What is the structural type of most sensory...Ch. 12 - Which structural type of neuron is most abundant?...Ch. 12 - Which neuroglia make myelin in the CNS? In the...Ch. 12 - Which neuroglia are common in regions where...Ch. 12 - Do Schwann cells cover nonmyelinated axons in the...
Ch. 12 - Name the connective tissue wrapping that encloses...Ch. 12 - Where do synaspes occur in the CNS, in white...Ch. 12 - Why is white matter white?Ch. 12 - If there is no interneuron in a reflex arc, as in...Ch. 12 - If you touch a hot stove, you reflexively...Ch. 12 - What type of neuronal circuit contains multiple...Ch. 12 - Both peripheral nerves and the white matter of the...Ch. 12 - From your understanding of the functions of myelin...Ch. 12 - What type of neurons form from neuroblasts in the...Ch. 12 - How does the development of sensory neurons...Ch. 12 - Prob. 1RQCh. 12 - Match the names of the cells in column B with the...Ch. 12 - Prob. 3RQCh. 12 - Prob. 4RQCh. 12 - An example of an effector is (a) the eye, (b) a...Ch. 12 - Prob. 6RQCh. 12 - A ganglion is a collection of (a) neuron cell...Ch. 12 - A synapse between a terminal bouton and a neuron...Ch. 12 - Myelin is most like which of the following cell...Ch. 12 - Prob. 10RQCh. 12 - Afferent neurons of the PNS synapse in the CNS...Ch. 12 - Prob. 12RQCh. 12 - Prob. 13RQCh. 12 - Place the connective tissue coverings surrounding...Ch. 12 - Define proprioception.Ch. 12 - Prob. 16RQCh. 12 - Prob. 17RQCh. 12 - Distinguish gray matter from white matter of the...Ch. 12 - What is distinctive about the appearance of a cell...Ch. 12 - Describe the differences between neurons and...Ch. 12 - Distinguish a nerve from a nerve fiber and a...Ch. 12 - Prob. 22RQCh. 12 - Draw a reflex arc in place in the nervous system...Ch. 12 - Prob. 24RQCh. 12 - Why are the cell bodies of sensory neurons located...Ch. 12 - Prob. 26RQCh. 12 - Two anatomists were arguing about a sensory...Ch. 12 - An MRI scan and other diagnostic tests indicated...Ch. 12 - Prob. 3CRCAQCh. 12 - Rochelle developed multiple sclerosis when she was...Ch. 12 - Reflexes can be somatic (as in the knee-jerk...Ch. 12 - Prob. 6CRCAQ
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- (a) Contrast unipolar, bipolar, and multipolar neurons structurally. (b) Indicate where each is most likely to be found.arrow_forwardWhich of the following parts of a neuron occupies the gray matter in the spinal cord? (a) tracts of long axons, (b) motor neuron cell bodies, (c) sensory neuron cell bodies, (d) nerves.arrow_forwardThere is always a synapse between the CNS and the peripheral effector in, (a) the ANS. (b) the SNS. (c) a reflex arc. (d) a, b, and c are correct.arrow_forward
- a) what letter represents dorsal white column b) what letter represents structure that carrys motor impulses from CNS to skeletal muscles? c) What letter represents structure that houses cell bodies of general somatic afferent neurons?arrow_forwardIn what form does the CNS receive a stimulus detected by a sensory receptor?arrow_forwardThree-year-old Jessica proudly shows you how she can wiggle her left big toe in the sand. Where precisely are the pyramidal cells that allow her to perform this movement? (Name the side, lobe, and region of the brain.) Where are the cell bodies of the neurons that these pyramidal cells synapse with?arrow_forward
- Match the names of the cells in column B with the function they perform, shown in column A.Column A Column B(1) line the central cavity of the brain (a) astrocytes(2) form myelin in the CNS (b) ependymal cells(3) form myelin in the PNS (c) microglial cells(4) remove neurotransmitters in the CNS (d) oligodendrocytes(5) regulate ionic composition of thefluid around neurons in the CNS (e) satellite cells (f) Schwann cells(6) CNS phagocytesarrow_forwardIn the glial cell what maintains the ionic environment of the brain?arrow_forwardThe myelin sheath is produced around axons in the PNS by (a) ganglia (b) neuron cell bodies (c) dendrites (d) Schwann cells (e) oligodendrocytesarrow_forward
- The final relay point for ascending sensory information that will be projected to the primary somatosensory cortex is the, (a) hypothalamus. (b) thalamus.(c) spinal cord. (d) medulla oblongata.arrow_forwardWhat happens to the axons of spinalnerves as they pass through a plexus? Why is thisfunctionally important?arrow_forwardCell bodies of UMN that synapse on LMN lie in all of these areas EXCEPT a) Medulla b) Thalamus c) Pre-motor cortex Pons d) Primary motor cortexarrow_forward
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