Human Physiology
15th Edition
ISBN: 9781259864629
Author: Fox, Stuart Ira
Publisher: Mcgraw-hill Education,
expand_more
expand_more
format_list_bulleted
Videos
Question
Chapter 12, Problem 6RA
Summary Introduction
To determine:
Type of neuron damaged in spastic paralysis.
Introduction:
Paralysis is a loss of muscle function of the body. It can be a complete paralysis or partial paralysis depending on whether the effect is on one side of the body or on both sides of the body. It can occur in one area of the body or it can be widespread.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Which of these tracts carries motor signals destined for the postural muscles? a. the gracile fasciculus b. the cuneate fasciculus c. the spinothalamic tract d. the vestibulospinal tract e. the tectospinal tract
Fill in the blankes
The somatic motor neurons innervating the __________________ of the lower limbs are located in the _________________ of the spinal cord.
A. smooth muscles; lumbar region
B. skeletal muscles; cervical region
C. skeletal muscles; lumbar region
D. skin; cervical region
The subdivision of the brain that does not initiate somatic motor movements, but rather coordinates and fine-tunes those movements, is the a. medulla oblongata. b. cerebrum. c. cerebellum. d. diencephalon.
Chapter 12 Solutions
Human Physiology
Ch. 12 - Describe the actions of muscles when they...Ch. 12 - Describe the different levels of muscle structure,...Ch. 12 - Define the terms motor unit and innervation ratio...Ch. 12 - Using the concept of recruitment, explain how...Ch. 12 - With reference to the sliding filament theory,...Ch. 12 - Prob. 3bCPCh. 12 - Describe a cycle of cross-bridge activity during...Ch. 12 - Prob. 4bCPCh. 12 - Use a flowchart to show the sequence of events...Ch. 12 - Prob. 5bCP
Ch. 12 - Explain how graded contractions and smooth,...Ch. 12 - Prob. 6bCPCh. 12 - Prob. 7aCPCh. 12 - Describe the relationship between the resting...Ch. 12 - Prob. 8CPCh. 12 - Prob. 9CPCh. 12 - Explain the different causes of muscle fatigue...Ch. 12 - Prob. 11CPCh. 12 - Prob. 12aCPCh. 12 - Describe all of the events that occur from the...Ch. 12 - Prob. 13CPCh. 12 - Explain the significance of reciprocal innervation...Ch. 12 - Describe the functions of gamma motor neurons and...Ch. 12 - Explain how cardiac muscle differs from skeletal...Ch. 12 - Contrast the structure of a smooth muscle cell...Ch. 12 - Distinguish between single-unit and multiunit...Ch. 12 - Describe the events by which depolarization of a...Ch. 12 - Prob. 1RACh. 12 - Prob. 2RACh. 12 - Prob. 3RACh. 12 - Prob. 4RACh. 12 - Prob. 5RACh. 12 - Prob. 6RACh. 12 - Prob. 7RACh. 12 - Electrical excitation of a muscle fiber most...Ch. 12 - The energy for muscle contraction is most directly...Ch. 12 - Prob. 10RACh. 12 - Prob. 11RACh. 12 - Prob. 12RACh. 12 - Which of these types of muscle cells are not...Ch. 12 - Prob. 14RACh. 12 - In an isotonic muscle contraction,...Ch. 12 - Prob. 16RACh. 12 - Prob. 17RACh. 12 - Prob. 18RACh. 12 - Using the concept of motor units, explain how...Ch. 12 - Prob. 20RACh. 12 - Explain why the myosin heads don't bind to the...Ch. 12 - Using the sliding filament theory of contraction,...Ch. 12 - Prob. 23RACh. 12 - Prob. 24RACh. 12 - Prob. 25RACh. 12 - What changes occur in muscle metabolism as the...Ch. 12 - Prob. 27RACh. 12 - Compare cardiac muscle, single-unit smooth muscle,...Ch. 12 - Your friend eats huge helpings or pasta for two...Ch. 12 - Prob. 30RACh. 12 - Prob. 31RACh. 12 - How is electrical excitation of a skeletal muscle...Ch. 12 - Prob. 33RACh. 12 - Prob. 34RACh. 12 - Prob. 35RACh. 12 - Prob. 36RACh. 12 - Refer to figure 12.22 to answer the following...Ch. 12 - Refer to figure 12.22 to answer the following...Ch. 12 - Prob. 39RACh. 12 - Refer to figure 12.22 to answer the following...
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
- Contrast the functions of upper and lower motor neurons.arrow_forwardSelect 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_forwardWhen do the posterior parietal cortex, premotor cortex, and supplementary motor cortex become most active? a. During the second or two in preparation for a movement b. During the movement itself c. During the second or two after a movementarrow_forward
- Where is the anterior (ventral) root located in the sequence of structures through which motor impulses pass as they descent from the brain and leve the spinal cord? A. Between anterior (ventral) gray horn and spinal nerve B. Between spinal nerve and posterior (dorsal) root ganglion C. Between anterior (ventral) gray horn and posterior (dorsal) gray horn D. Between white column and posterior (dorsal) gray hornarrow_forwardWhich of the following is correct? tertiary neurons found by:- a. extending between the posterior horn and anterior horn b. extending between the posterior horn and the brainstem c. extending between the thalamus and the primary somatosensory cortex d. extending between the primary motor cortex and brainstemarrow_forwardYou notice that when your friend walks his movements appear as though he has too much to drink even though he hasn’t consumed any alcohol recently. You suspect that he may have a lesion to the following motor system. a. The motor cortex. b. The basal ganglia. c. The spinal cord. d. The reticular formation. e. The cerebellum.arrow_forward
- Interneurons can act as “switches” that enable a movement to be turned on or off under the command of higher motor centers. How? Explain with an example?arrow_forwardHigher motor commands originate in all the following centers, except :-a- cerebral cortexb- thalamusc- caudate nucleusd- cerebellumarrow_forwardWhat do multiple sclerosis and ALS (amyotropic lateral sclerosis) have in common?a. They both are more common in young men than in young women.b. They both impair the initiation of action potentials.c. They both damage the myelin sheath, disrupting action potential transmission.d. They both impair nerve function in the peripheral nervous systemarrow_forward
- 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)arrow_forwardAll motor neurons release acetylcholine as a neurotransmitter except a. Postganglionic sympathetic neurons b. Somatic motor neurons c. Postganglionic parasympathetic neurons d. Specific cardiac and smooth muscle fibersarrow_forwardAll of the following are true concerning reflex arcs EXCEPT A.they involve a few neurons and directly enter and immediately leave the spinal cord B.they are used to prevent harm C.they are subconscious and automatic D.they only use the PNS and not the CNSarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Nervous System - Get to know our nervous system a bit closer, how does it works? | Neurology; Author: FreeMedEducation;https://www.youtube.com/watch?v=6O-0CVAgaEM;License: Standard youtube license