Laboratory Manual For Human Anatomy & Physiology
4th Edition
ISBN: 9781260159363
Author: Martin, Terry R., Prentice-craver, Cynthia
Publisher: McGraw-Hill Publishing Co.
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Textbook Question
Chapter 28, Problem 4PL
Which of the following is not part of the gray matter of the spinal cord?
a. gray commissure
b. posterior horn
c. lateral funiculus
d. lateral horn
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In adults, the spinal cord is not the same length as the vertebral canal, and most of the lumbar part of the spinal cord is within
A. the coccyx.
B. the sacrum.
C. the cervical vertebrae.
D. the thoracic vertebrae.
E. the cauda equina.
The vertebral canal is occupied by a bundle of spinal nerve roots called a. the terminal filum. b.Below L2 the descending tracts. c. the gracile fasciculus. d. the medullary cone. e. the cauda equina.
Damage to the surface tissue of the spinal cord will most likely affecta. information processing within the spinal cord.b. the stimulation of sensory organs.c. communication between the peripheral nervous system and the brain.d. reflex arcs.
Chapter 28 Solutions
Laboratory Manual For Human Anatomy & Physiology
Ch. 28 - The ____________ is the most superficial membrane...Ch. 28 - The inferior end of the adult spinal cord...Ch. 28 - Prob. 3PLCh. 28 - Which of the following is not part of the gray...Ch. 28 - The central canal of the spinal cord is located...Ch. 28 - The brachial plexus is formed from components of...Ch. 28 - There are eight pairs of cervical spinal nerves....Ch. 28 - The major ascending (sensory) and descending...Ch. 28 - Match the terms in column A with the descriptions...Ch. 28 - Prob. F28.14A
Ch. 28 - The spinal cord gives rise to 31 pairs...Ch. 28 - The bulge in the spinal cord that gives off nerves...Ch. 28 - The bulge in the spinal cord that gives off nerves...Ch. 28 - The ______________ is a groove that extends the...Ch. 28 - In a spinal cord cross section, the posterior...Ch. 28 - The axons of motor neurons are found in the...Ch. 28 - The _______________ connects the gray matter on...Ch. 28 - The _______ in the gray commissure of the spinal...Ch. 28 - The white matter of the spinal cord is divided...Ch. 28 - There are ______________________ pairs of cervical...Ch. 28 - There are ______________________ pairs of sacral...Ch. 28 - Cervical spinal nerve pair C1 originates between...Ch. 28 - Spinal nerves L4 through S4 form a...Ch. 28 - The gray matter of the spinal cord is divided into...Ch. 28 - The spinal cord ends just inferior to L1 in a...Ch. 28 - Severing the ______________________ nerves of the...Ch. 28 - The inferior and superior gluteal nerves of the...Ch. 28 - To block chronic pain in a patient, sometimes...Ch. 28 - Prob. 4.2ACh. 28 - Injuries to the vertebral column and spinal cord...Ch. 28 - Why are intramuscular injections given in the...Ch. 28 - Prob. 4.2CT
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- damage 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_forwardWhat is the function of the dorsal roots of the spinal cord?A. They receive sensory input.B. They control motor output.C. They convey information from the brain to the spinal cord.D. They convey information from the spinal cord to the brain.arrow_forwardThe vertebral bodies and intervertebral discs are ______ to the spinal cord whereas the spinous processes of the vertebrae are ______ to the spinal cord. A posterior; anterior B dorsal; inferior C anterior; posterior D superficial; ventralarrow_forward
- 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.arrow_forwardWhy would a spinal injury in the cervical region result in more extensive deficits in motor and sensory function than a spinal injury in the lumbar region?arrow_forwarddamage to which cranial nerve might produce the following results? a- inability to move the tongue................................................. b- inability to see........................................................ c- inability to masticate(chew food)...................................... d- inability to swallow.............................................arrow_forward
- (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.arrow_forwardThe thoracic spinal cord has the smallest dorsal horn area because: a. the trunk is the most innervated area of the body and therefore there are more projections into the dorsal horn there. b. the trunk is the least innervated area of the body and therefore there are fewer projections into the dorsal horn there. c. most of the descending upper motor neurons have already entered the ventral horn. d. There are many motor neurons to control the small muscles around the spine.arrow_forwardEach of the following is true of the spinal cord, except: it ______________. a.carries sensory input b.carries motor output c.contains dorsal horns d.contains a central sulcus e.major reflex centerarrow_forward
- An anesthetic blocks the function of the dorsal rami of the cervical spinal nerves. Which areas of the body will be affected?arrow_forwardHow many spinal nerves are there in a body?arrow_forwardThe largest nerve in the body, the sciatic nerve, belongs to the ________ nerve plexus. Question options: A) sacral B) lumbar C) brachial D) cervicalarrow_forward
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