Human Biology: Concepts and Current Issues (8th Edition)
8th Edition
ISBN: 9780134042435
Author: Michael D. Johnson
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 6, Problem 7CR
Summary Introduction
To review:
The rationale behind paralysis of skeletal muscles of the limb by spinal cord injury to the neck, while no effect of the injury to the cardiac muscles is not affected as the heart beats rhythmically.
Introduction:
Spinal cord injuries are irreparable as the nerve cells do not have the ability to regenerate. When there is a minor injury to the spinal cord at the neck region, the damage to the body could be manageable, but if the damage is extensive then all the limbs below neck region are paralyzed. In both cases, the cardiac muscles are not affected.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Arthur dove off a small cliff into water that was shallower thanhe expected and hit his head on a submerged object. He is nowa quadriplegic, meaning that both his upper and lower limbs areparalyzed. Approximately where is the location of his injury?What is the likelihood that Arthur will recover from this injury?(You may want to review section 14.4 and Clinical View 14.3:“Treating Spinal Cord Injuries” in section 14.5 to answer thelatter question.)
After a lengthy car ride, your elderly uncle gets out of the car and complains, “I can hardly walk. It must be sciatica.” Explain what this means.
How would you explain the following observation? When motor nerve fibers in the leg are severed, the muscles they innervate become paralyzed; however, in time, control over the muscles often returns.
Chapter 6 Solutions
Human Biology: Concepts and Current Issues (8th Edition)
Ch. 6 -
1. Do you think we should continue to try to...Ch. 6 - Prob. 2QCCh. 6 - Describe how muscle contraction can resist...Ch. 6 - Describe how a muscle's origin and insertion...Ch. 6 - Describe the roles of calcium in muscle...Ch. 6 -
4. Explain what causes rigor mortis.
Ch. 6 - Prob. 5CRCh. 6 - Prob. 6CRCh. 6 - Prob. 7CRCh. 6 -
8. Compare and contrast how a constant degree of...
Ch. 6 - Prob. 9CRCh. 6 - Prob. 10CRCh. 6 - Prob. 1TYCh. 6 -
2. Which of the following choices arranges the...Ch. 6 - All of the following are functions of the muscular...Ch. 6 -
4. Which of the following happens during muscle...Ch. 6 -
5. Botulism toxin inhibits the release of...Ch. 6 - The sliding filament mechanism describes the...Ch. 6 -
7. What is the first and most direct energy...Ch. 6 - As you clasp your hands in front of you and push...Ch. 6 -
9. All of the following may happen in response to...Ch. 6 - Which of the following is/are characteristic of...Ch. 6 - Which of the following is the site of calcium ion...Ch. 6 - What is the role of ATP in muscle function? a. ATP...Ch. 6 -
13. Which of the following would have motor units...Ch. 6 - Which type(s) of muscle cells can contract the...Ch. 6 - Prob. 15TYCh. 6 - Prob. 1AWKCh. 6 - Why do you think it is generally accepted medical...Ch. 6 - Prob. 3AWKCh. 6 - What would happen to a muscle if one of its...Ch. 6 - Prob. 5AWKCh. 6 - Prob. 6AWKCh. 6 - Prob. 7AWKCh. 6 - Prob. 8AWK
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
- Can indivuals with spinal cord injury be able to demonstrate the muscle reflexes? Explainarrow_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_forwardA brain hemorrhage within the region of the right internal capsule results in paralysis of the left side of the body. Explain why the left side (rather than the right side) is affected.arrow_forward
- John Jones injured his spinal cord. He has use of his serratus anterior muscle, biceps brachii, and deltoid. However, he does not have movement in most muscles of his hand and digits 4 and 5. Where is his spinal cord injury?arrow_forwardXena eventually catches Callisto (remember, she is 25 years old). Salmoneus, who is 60 years old, agrees to deliver Callisto to face charges for war crimes. On the way, their cart crashes down a ravine. Salmoneus also suffers damage to his spinal cord during the accident. Compare the likely degree of regeneration/recovery of his spinal cord with that of the injured skeletal muscles and describe the consequences of your observations for his quality of life and ability to remain active.arrow_forwardExplain why a spinal cord injury to the cervical region would cause more widespread damage to the body compared to a spinal cord injury in the lumbar region.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_forwardCompare and contrast the influence of cerebral nuclei and thecerebellum on skeletal muscle.arrow_forwardwoman presents to the emergency department with loss of muscle function on the right side of her body. The physician suspects she had suffered a stroke (a blood clot in the brain). On which side of the patient’s brain did the stroke likely occur? Explainarrow_forward
- Please identity the structures on the following diagram of a neural pathway through the spinal cord.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_forwardComplete transection of the spinal cord did not affect arterial blood pressure when the lesion occurs at level of :-a- mid-cervical segmentsb- upper thoracic segmentsc- lower thoracic segmentsd- mid-lumbar segmentsarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Medical Terminology for Health Professions, Spira...Health & NutritionISBN:9781305634350Author:Ann Ehrlich, Carol L. Schroeder, Laura Ehrlich, Katrina A. SchroederPublisher:Cengage Learning
Medical Terminology for Health Professions, Spira...
Health & Nutrition
ISBN:9781305634350
Author:Ann Ehrlich, Carol L. Schroeder, Laura Ehrlich, Katrina A. Schroeder
Publisher:Cengage Learning