Human Anatomy (8th Edition)
8th Edition
ISBN: 9780134243818
Author: Elaine N. Marieb, Patricia Brady Wilhelm, Jon B. Mallatt
Publisher: PEARSON
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Chapter 13, Problem 13RQ
(a) What are the superior and inferior boundaries of the spinal cord in the vertebral canal? (b) A correctly executed lumbar spinal tap could poke the cauda equina or filum terminale, but not the conus medullaris. Explain.
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Spinal nerves are called mixed nerves because they (a) are associated with a pair of dorsal root ganglia. (b) exit at intervertebral foramina. (c) contain sensory and motor fibers. (d) are associated with a pair of dorsal and ventral roots.
Spinal nerves are called mixed nerves because they, (a) are associated with a pair of spinal ganglia. (b) exit at intervertebral foramina. (c) contain sensory and motor fibers. (d) are associated with a pair of dorsal and ventral roots.
(a) Describe the anatomical relationship of the white and gray rami communicantes to a spinal nerve, and to the dorsal and ventral rami. (b) Why are gray rami communicantes gray?
Chapter 13 Solutions
Human Anatomy (8th Edition)
Ch. 13 - Prob. 1CYUCh. 13 - Prob. 2CYUCh. 13 - Name the structure that connects the third...Ch. 13 - Prob. 4CYUCh. 13 - In which part of the brain stem are each of the...Ch. 13 - What are the corpora quadrigemina?Ch. 13 - Name the structure that connects the two...Ch. 13 - What type of sensory information does the...Ch. 13 - Name the three white fiber tracts that connect the...Ch. 13 - Prob. 10CYU
Ch. 13 - What part of the diencephalon functions as the...Ch. 13 - What is the difference in function between a...Ch. 13 - Which functional area of the cerebral cortex plans...Ch. 13 - Define contralateral projection.Ch. 13 - What deficits may result from injury to the...Ch. 13 - Prob. 16CYUCh. 13 - Where is the caudate nucleus located in reference...Ch. 13 - From where do the reticular nuclei receive input?...Ch. 13 - What emotional response does the amygdaloid body...Ch. 13 - Name the dura mater extension that lies in the...Ch. 13 - Where is cerebrospinal fluid produced? How is it...Ch. 13 - What neural structures pass through the vertebraI...Ch. 13 - Which portion of the spinal cord, gray matter or...Ch. 13 - Prob. 24CYUCh. 13 - Which two meninges border the space that is filled...Ch. 13 - Which sensory pathway carries discriminative touch...Ch. 13 - Of the sensory pathways described, which pass...Ch. 13 - Which descending fiber tract originates from the...Ch. 13 - Which of the pathways illustrated here (ascending...Ch. 13 - Individuals who have suffered a stroke generally...Ch. 13 - Prob. 31CYUCh. 13 - Choose the correct brain structure from the key...Ch. 13 - A patient suffered a cerebral hemorrhage that...Ch. 13 - Destruction of the ventral horn cells of the...Ch. 13 - For each of the following brain structures, write...Ch. 13 - Which of the following areas is most likely to...Ch. 13 - Prob. 6RQCh. 13 - (a) Make a rough sketch of a lateral view of the...Ch. 13 - Prob. 8RQCh. 13 - Prob. 9RQCh. 13 - Prob. 10RQCh. 13 - (a) Describe the location of the reticular...Ch. 13 - Prob. 12RQCh. 13 - (a) What are the superior and inferior boundaries...Ch. 13 - Prob. 14RQCh. 13 - (a) In the spinothalamic pathway, where are the...Ch. 13 - Prob. 16RQCh. 13 - Prob. 17RQCh. 13 - A brain surgeon removed a piece of a woman's skull...Ch. 13 - Prob. 19RQCh. 13 - Prob. 20RQCh. 13 - Prob. 21RQCh. 13 - Describe the location and function of the ventral...Ch. 13 - Kimberly learned that the basic design of the CNS...Ch. 13 - When Ralph had brain surgery to remove a small...Ch. 13 - When their second child was born, Kiko and Taka...Ch. 13 - Cesar, a brilliant computer analyst, was hit on...Ch. 13 - One war veteran was tetraplegic, and another was...Ch. 13 - Every time Spike went to a boxing match, he...Ch. 13 - A spinal cord injury at C2 results not only in...Ch. 13 - What parts of the brain are still developing...Ch. 13 - Strokes, tumors, or wounds can destroy limited...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Which of the following is NOT true in adults? (A) The tapering end of the spinal cord may terminate as high as T12 or as low as L3. (B) The first cervical nerves lack dorsal roots in 50% of people. (C) The coccygeal nerve may be absent. (D) The terminal filum is the vestigial rem- nant of the caudal part of the spinal cord that was in the tail of the embryo. (E) The spinal cord has a lumbar enlargement for the lower limb but no equivalent enlargement for the smaller upper limb.arrow_forwardSketch the spinal cord in cross section, and label the following structures: (a) lateral funiculus of white matter, (b) ventral root, (c) ventral horn of gray matter, (d) central canal, (e) dorsal root ganglion, (f) dorsal column tracts: fasciculus gracilis and fasciculus cuneatus, (g) ventral corticospinal tract, (h) lateral corticospinal tract.arrow_forwardThe posterior funiculus is another name for which part of the spinal cord?arrow_forward
- Injury to the accessory nerve may result in sternocleidomastoid muscledysfunction, a condition called torticollis (sometimes called wry neck),in which the head is drawn to one side. If the head is turned to the left,does this position indicate injury to the left or the right spinal componentof the accessory nerve?arrow_forwarddamage to which spinal nerve might produce the following physical findings? a- inability to extend the forearm and hand......................................... b- inability to breathe............................................ c- inability to feel the skin over the anterolateral thigh....................................... d- inability to dorsiflex the foot.............................arrow_forwardthe bundle of fibers that the spinal cord continues down is called the ........................arrow_forward
- Both are painful, but explain why a fractured sacrum could be (would be) much more serious than a fractured coccyx. Explain the relationship of each structure (sacrum and coccyx) to spinal nerves.arrow_forwardWhen removing cerebrospinal fluid during a spinal tap, the needle is inserted below L2. Explain why spinal taps are not done above this level.arrow_forwardChoose the correct answer, and explain why it is correct. Through which pair of intervertebral foramina do spinal nerves L5 leave the vertebral canal? (a) holes in the sacrum, (b) just superior to vertebra L5, (c) just superior to S1, (d) just inferior to S4.arrow_forward
- During a difficult delivery, the baby’s arm delivered first. The attending physician grasped the arm and forcefully pulled it. Later, a nurseobserved that the baby could not abduct or adduct the medial fourfingers, and flexion of the wrist was impaired. What nerve wasdamaged?arrow_forwardSelect the best answer or answers from the choices given: Destruction of the ventral horn cells of the spinal cord results in loss of (a) integrating impulses, (b) sensory impulses, (c) voluntary motor impulses, (d) all of these.arrow_forwardSomatic sensory nuclei of the spinal cord are located in the lateral horns. a.) true b.) falsearrow_forward
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