Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Textbook Question
Chapter 49, Problem 8TYK
The white matter of the spinal cord is composed of
- a. the ventricles.
- b. myelinated sheaths of axons.
- c. cerebrospinal fluid.
- d. motor and interneuron cell bodies.
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Which of the following describes the ascending tracts and the descending tracts of the spinal cord?
A. The ascending tracts contain motor impulses, and the descending tracts contain sensory information.B. Both the ascending and descending tracts contain sensory information.C. The ascending tracts contain sensory information, and the descending tracts contain the motor impulses.D. Both the ascending and descending tracts contain motor impulses.
Describe the spinal cord according to:
A. location
B. shape and length
C. vertebral levels of upper and lower extremities
D. distribution of gray and white matter
E. anatomical enlargements
F. features at distal end
G. attachment of spinal nerves
Which of the following does not describe the spinal nerves?
A.They are created through a combination of dorsal and ventral roots.
B. They exit the vertebral column through intervertebral spaces.
C. Some are made up of only sensory fibers, while others are made up of motor fibers.
D. There are thirty-one spinal nerves. They are named based on where they exit the vertebral column.
Chapter 49 Solutions
Study Guide for Campbell Biology
Ch. 49 - The organization of an organisms nervous system...Ch. 49 - Prob. 2IQCh. 49 - Prob. 3IQCh. 49 - Identify the structures (a-g) in the following...Ch. 49 - Prob. 5IQCh. 49 - Action potentials are initiated more readily in...Ch. 49 - Prob. 1SYKCh. 49 - Prob. 1TYKCh. 49 - Prob. 2TYKCh. 49 - Prob. 3TYK
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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
- A typical spinal nerve: Select one: a. normally divides into four branches that will supply the thoracic region, the abdominal region, the pelvic region and the limbs b. is covered by the connective tissue called epineurium c. attaches to the spinal cord via the dorsal root ganglia d. is protected by the dura, arachnoid and pia mater e. contains one nerve fibre and it's myelin sheatharrow_forwardDamage 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.arrow_forwardWhat kinds of neurons (sympathetic or parasympathetic, preganglionic or postganglionic) are found in the following? a. cranial nerve nuclei b. lateral horn of the thoracic spinal cord gray matter c. lateral portion of the sacral spinal cord gray matter d. chain ganglia e. ganglia in the wall of an organarrow_forward
- The anterior root of a spinal nerve containsa. axons of both motor and sensory neurons.b. axons of sensory neurons only.c. interneurons.d. axons of motor neurons only.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_forwardRegarding the gray matter in the spinal cord, all of the following are correct EXCEPT which one? A. Consists of neurons, neuronal processes, and neuroglia B. Butterfly or H-shaped C. Categorized into columns and laminae D. Ratio of gray to white matter is least at the cervical and lumbar regions Fogh of the 10 Rexed laminae involved in sensory or motor pathwaysarrow_forward
- Parasympathetic ganglia are located a. in a chain parallel to the spinal cord. b. in the dorsal roots of spinal nerves. c. next to or within the organs innervated. d. in the brain.arrow_forwardThe outermost connective tissue wrapping of a nerve is called thea. epineurium.b. perineurium.c. endoneurium.d. arachnoid mater.e. dura mater.arrow_forwardA typical spinal nerve: Select one: is protected by the dura, arachnoid and pia mater b. normally divides into four branches that will supply the thoracic region, the abdominal region, the pelvic region and the limbs C. contains one nerve fibre and it's myelin sheath d. is covered by the connective tissue called endomysium e. attaches to the spinal cord via the dorsal and ventral roots O a.arrow_forward
- surrounds a bundle of nerve fibers A. Neurium B. Perineurium C. Epineurium D. Endoneurium E. None of the abovearrow_forwardMark the following statements about the spinal cord as true or false. If a statement is false, correct it to make a true statement.a. The spinal cord functions as a relay and processing station.b. The spinal cord extends from the foramen magnum to the level between the first and second lumbar vertebrae.c. The epidural space around the spinal cord is only a potential space.d. The posterior horn of spinal gray matter contains the cell bodies of motor neurons.e. The corticospinal tracts are the main sensory tracts in the spinal cordarrow_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_forward
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