Laboratory Manual for Human Anatomy & Physiology (Cat Version)
4th Edition
ISBN: 9781259864612
Author: Martin
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Textbook Question
Chapter 27, Problem 4PL
The PNS contains
a. 12 pairs of cranial nerves only.
b. 31 pairs of spinal nerves only.
c. 12 pairs of cranial nerves and 31 pairs of spinal nerves.
d. 43 pairs of spinal nerves.
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Select the statement that best describes the local circuitry of the spinal cord.
a. There is no local circuitry within the spinal cord.
b. Local circuits enable the same neurons to innervate both distal and proximal muscles.
c. Neurons that innervate distal muscles are interconnected across the midline.
d. None of the answers.
e. Neurons that innervate proximal muscles are interconnected through many spiral cord segments.
A 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.
Where do preganglionic fibers come from for the parasympathetic division of the autonomic nervous system?
A. sacral and coccyx region of the spinal cord
B. brain stem and cervical region of the spinal cordC. brain stem and sacral part of the spinal cord
D. thoracic and lumbar regions of the spinal cord
Chapter 27 Solutions
Laboratory Manual for Human Anatomy & Physiology (Cat Version)
Ch. 27 - The cell body of a neuron contains the a. nucleus....Ch. 27 - A multipolar neuon contains a. one dendrite and...Ch. 27 - Neuroglia that produce myelin insulation in the...Ch. 27 - The PNS contains a. 12 pairs of cranial nerves...Ch. 27 - Schwann cells a. are only in the brain. b. are...Ch. 27 - A ______________ neuron is the most common...Ch. 27 - Prob. 7PLCh. 27 - Prob. 8PLCh. 27 - Match the terms in column A with the descriptions...Ch. 27 - Match the terms in column A with the descriptions...
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- The nervous system that consists of 12 pairs of cranial nerves and 31 pairs of spinal nerves is calleda. central.b. peripheral.c. sympathetic.d. parasympathetic.arrow_forwardThe autonomic nervous system is part of the a. central nervous system. b. peripheral nervous system. c. sympathetic nervous system. d. parasympathetic nervous system.arrow_forwardFill in the blank for A and B A. The vagus nerve is a so-called cranial nerve- it exists and enters the brain. It contains ___ (pre or post) ganglionic fibers of the __________ (parasympathetic or sympathetic) autonomic nervous system. B. Ascending tracts carry ______ (sensory or motor) information. C. The nervous tissue is derived from which germ layer?arrow_forward
- 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.arrow_forwardWhich 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.arrow_forwardWhich of the following cranial nerves carries sympathetic fibers? a. oculomotor b. facial c. trigeminal d. vagus e. none of the cranial nervesarrow_forward
- surrounds a bundle of nerve fibers A. Neurium B. Perineurium C. Epineurium D. Endoneurium E. None of the abovearrow_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_forward17. Which of the following is true of spinal nerves? A. They originate at in areas of the brain. B. They carry only sensory fibers. C. There are 31 pairs, and all are mixed nerves. 18. Defects in the valves of the heart can often be detected by the presence of A. palpitations. B. murmurs. C. angina pectoris. ____ 19. The olfactory nerve (cranial nerve I) is responsible for the sense of A. smell. B. sight. C. touch.arrow_forward
- 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_forwardThe white ramus communicans containsa. preganglionic sympathetic fibers.b. postganglionic sympathetic fibers.c. preganglionic parasympathetic fibers.d. postganglionic parasympathetic fibers.arrow_forwardParasympathetic 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_forward
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