LooseLeaf for Human Anatomy
5th Edition
ISBN: 9781259285271
Author: Michael McKinley Dr., Valerie O'Loughlin, Elizabeth Pennefather-O'Brien
Publisher: McGraw-Hill Education
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Chapter 16, Problem 9MC
Summary Introduction
Introduction:
White matter is a tissue in the brain, which is composed of the nerve fibers. The fiber connects the nerves cells and is covered by the myelin. The myelin sheath helps to protect the axon.
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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.
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.
What 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 organ
Chapter 16 Solutions
LooseLeaf for Human Anatomy
Ch. 16 - Prob. 1WYLCh. 16 - Prob. 2WYLCh. 16 - What is the function of the denticulate ligaments?Ch. 16 - Prob. 4WYLCh. 16 - Prob. 5WYLCh. 16 - Prob. 6WYLCh. 16 - Prob. 7WYLCh. 16 - Prob. 8WYLCh. 16 - Prob. 9WYLCh. 16 - Prob. 10WYL
Ch. 16 - Prob. 11WYLCh. 16 - Prob. 12WYLCh. 16 - Prob. 13WYLCh. 16 - Prob. 14WYLCh. 16 - Match each numbered item with the most closely...Ch. 16 - Prob. 1MCCh. 16 - Prob. 2MCCh. 16 - Identify the meningeal layer immediately deep to...Ch. 16 - Axons cross from one side of the spinal cord to...Ch. 16 - The radial nerve originates from the ______...Ch. 16 - Prob. 6MCCh. 16 - Prob. 7MCCh. 16 - Prob. 8MCCh. 16 - Prob. 9MCCh. 16 - Which statement is true about intercostal nerves?...Ch. 16 - Prob. 1CRCh. 16 - Where is the epidural space? What is housed there?Ch. 16 - Prob. 3CRCh. 16 - Where are the cervical plexuses located, and what...Ch. 16 - Prob. 5CRCh. 16 - Prob. 6CRCh. 16 - What muscles do the tibial and common fibular...Ch. 16 - Prob. 8CRCh. 16 - What are the differences between withdrawal,...Ch. 16 - Where are the basal plates of the neural tube, and...Ch. 16 - Prob. 1DCRCh. 16 - Prob. 2DCR
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- surrounds a bundle of nerve fibers A. Neurium B. Perineurium C. Epineurium D. Endoneurium E. None of the abovearrow_forwardThe outermost connective tissue wrapping of a nerve is called thea. epineurium.b. perineurium.c. endoneurium.d. arachnoid mater.e. dura mater.arrow_forwardDescribe 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 nervesarrow_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_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_forwardA 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_forward
- 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.arrow_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_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_forward
- Which of the following is most correct: A. Most spinal nerves contain both somatic and autonomic fibers. B. Most body responses to changing internal and external environments involve both enhanced skeletal muscle and visceral activity C. Somatic and autonomic branches are not truly individual entities, function is well integrated. D. Higher brain centers regulate both somatic and autonomic function. E. All these are correct.arrow_forwardWhich of the following is true of cranial nerves? a. some have sensory only functions b. all have sensory functions c. all have motor functions d. most have direct influence on visceral homeostasis give answer with explanation for correcr and incorrect options also asaparrow_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
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