ANATOMY & PHYSIOLOGY LL W/CONNECT ACCESS
4th Edition
ISBN: 9781265521363
Author: McKinley
Publisher: MCG
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 14.3, Problem 7WDYL
Summary Introduction
To analyze:
The following structures for relaying the motor input from the spinal cord to the skeletal muscles: anterior horn, effector (skeletal muscles), spinal nerves, and anterior root.
Introduction:
Motor (or afferent) nerve impulses designate those impulses that are carried by the motor neurons. These neurons constitute the motor cranial (brain) or spinal nerves. Again, certain nerves also act as both sensory and motor nerves.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Which of the following would result in no movement (i.e. no activation of the motor
cortex)?
Stimulation of D2 Medium Spiny Neurons
Stimulation of D1 Medium Spiny Neurons
Inhibition of the Globus Pallidus Interna
Inhibition of the Globus Pallidus Externa
Both A & D are correct
Explain the descending pathway from the brain where Mr. Dexter decides to move his right leg to the actual movement of his quadriceps. (Use complete sentences.) Use key words in this order: primary motor cortex in precentral gyrus, frontal lobe, descending tract, decussate, ventral horn with motor neuron in lumbar spinal cord, ventral root, spinal nerve, sciatic nerve in lumbosacral plexus, muscles to move leg (ie. quadriceps)to take a step.
A friend who works in a research lab is conducting an experiment to study motor movement. First the animal undergoes spinal transection at T5. Then, the animal is trained to walk on a treadmill while supported. Finally, GABA antagonists are injected into the lumbar enlargement of the spinal cord. After treatment of the drug, what motor response would you expect?
Question 5 options:
A)
The animal no longer has proper functioning of back or front legs while on the treadmill
B)
The animal no longer has coordinated movement of the front legs while on the treadmill
C)
The animal no longer has coordinated movement of the back legs while on the treadmill
D)
The animal can walk normally on the treadmill (with support)
Chapter 14 Solutions
ANATOMY & PHYSIOLOGY LL W/CONNECT ACCESS
Ch. 14.1 - Prob. 1WDYLCh. 14.1 - Prob. 2WDYLCh. 14.1 - Prob. 3WDYLCh. 14.1 - Prob. 4WDYLCh. 14.2 - Prob. 5WDYLCh. 14.3 - Prob. 6WDYLCh. 14.3 - Prob. 7WDYLCh. 14.3 - Prob. 8WDYLCh. 14.4 - Prob. 9WDYLCh. 14.4 - Prob. 10WDYL
Ch. 14.4 - Prob. 11WDYLCh. 14.4 - Prob. 12WDYLCh. 14.4 - Prob. 13WDYLCh. 14.5 - Prob. 14WDYLCh. 14.5 - Prob. 15WDYLCh. 14.5 - Prob. 16WDYLCh. 14.5 - Prob. 17WDYLCh. 14.5 - Prob. 18WDYLCh. 14.5 - Prob. 19WDYLCh. 14.5 - Which nerve might you have damaged if you have...Ch. 14.5 - Prob. 21WDYLCh. 14.5 - Prob. 22WDYLCh. 14.5 - Prob. 23WDYLCh. 14.6 - What are the four main properties of a reflex?Ch. 14.6 - Prob. 25WDYLCh. 14.6 - Prob. 26WDYLCh. 14.6 - What is the major difference between monosynaptic...Ch. 14.6 - Prob. 28WDYLCh. 14.6 - Identify the Golgi tendon reflex (which is an...Ch. 14.6 - Prob. 30WDYLCh. 14.7 - Prob. 31WDYLCh. 14 - Prob. 1DYKBCh. 14 - Prob. 2DYKBCh. 14 - Prob. 3DYKBCh. 14 - Prob. 4DYKBCh. 14 - Prob. 5DYKBCh. 14 - Prob. 6DYKBCh. 14 - Prob. 7DYKBCh. 14 - Prob. 8DYKBCh. 14 - Prob. 9DYKBCh. 14 - Prob. 10DYKBCh. 14 - Prob. 11DYKBCh. 14 - List the three gray matter horns on each side of...Ch. 14 - Compare the main differences between the posterior...Ch. 14 - Prob. 14DYKBCh. 14 - Prob. 15DYKBCh. 14 - Prob. 16DYKBCh. 14 - Prob. 17DYKBCh. 14 - Prob. 18DYKBCh. 14 - Prob. 19DYKBCh. 14 - Prob. 20DYKBCh. 14 - Prob. 1CALCh. 14 - Prob. 2CALCh. 14 - Prob. 3CALCh. 14 - Prob. 4CALCh. 14 - Prob. 5CALCh. 14 - Prob. 1CSLCh. 14 - Prob. 2CSLCh. 14 - Prob. 3CSL
Knowledge Booster
Learn more about
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
- Match functions with parts of the central nervous system (CNS) This structure regulates voluntary movements (checks what the brain has instructed against what is actually happening) The primary motor area is located here This structure is a major sensory relay centre Thirst and satiety centres are located herearrow_forwardDescribe the role of the following in planning and executing movement: spinal cord - brain stem - thalamus - cerebellum - basal ganglia (basal nuclei) - cerebral cortex -arrow_forwardExplain the descending pathway from the brain where Mr. D decides to move his right leg to the actual movement of his quadriceps. (Use complete sentences.) Use key words in this order: primary motor cortex in precentral gyrus, frontal lobe, descending tract, decussate, ventral horn with motor neuron in lumbar spinal cord, ventral root, spinal nerve, sciatic nerve in lumbosacral plexus, muscles to move leg (ie. quadriceps)to take a step.arrow_forward
- For each of the following body regions, name the peripheral nerve that carries somatic motor fibers to most of the skeletal muscles: flexor surface of the arm flexor surface of the forearm extensor surface of the arm and forearm anterior thigh posterior thigh anterior leg posterior legarrow_forwardSeveral of the events that occur between the time a physician strikes apatient’s patellar tendon with a rubber hammer and the time the quadriceps femoris contracts (knee-jerk reflex) are listed below:(1) increased frequency of action potentials in sensory neurons(2) stretch of the muscle spindles(3) increased frequency of action potentials in the alpha motor neurons(4) stretch of the quadriceps femoris(5) contraction of the quadriceps femorisWhich of the following most closely describes the sequence ofevents as they normally occur?a. 4,1,2,3,5 c. 1,4,3,2,5 e. 4,2,3,1,5b. 4,1,3,2,5 d. 4,2,1,3,5arrow_forwardAn upper motor neuron lesion in the lateral column (lateral corticospinal tract) can result in which of the following problems? Flaccid paralysis, contralateral Flaccid paralysis, ipsilateral Spastic paralysis, contralateral Spastic paralysis, ipsilateral A lower motor neuron lesion in the ventral horn can result in which of the following problems? Flaccid paralysis, contralateral Flaccid paralysis, ipsilateral Spastic paralysis, contralateral Spastic paralysis, ipsilateralarrow_forward
- An injury to the superior portion of the primary motor cortex would affect the ability to control muscles of which parts of the body?arrow_forwardBriefly explain the function of the supraspinal descending inhibitory motor pathways.arrow_forwardWhen motor nerve fibers in the leg are severed, the muscles they innervate become paralyzed; however, in time, control over the muscles often returns. Why/how is this possible?arrow_forward
- You are walking along the beach barefoot and step on a sharp object with your right foot. You immediately flex the right leg and balance yourself by extending the left leg. Label the following neurons in Figure.1. Sensory neuron 2. Interneuron sending impulses up and down the spinal cord 3. Interneuron synapsing with motor neurons 4. Motor neuron causing flexion 5. Motor neuron causing extensionarrow_forwardSupplemental motor area is involved in all the following functions, except :-a- adjusting postureb- orienting responsesc- motor programmingd- coordinating bilateral movementsarrow_forwardDifference between upper and lower motor neuron lesion?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Human Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage Learning
Human Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage Learning
Human Physiology: From Cells to Systems (MindTap ...
Biology
ISBN:9781285866932
Author:Lauralee Sherwood
Publisher:Cengage Learning
Human Biology (MindTap Course List)
Biology
ISBN:9781305112100
Author:Cecie Starr, Beverly McMillan
Publisher:Cengage Learning