Human Biology (MindTap Course List)
11th Edition
ISBN: 9781305112100
Author: Cecie Starr, Beverly McMillan
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 6, Problem 4CT
At the gym Sean gets on a stair-climbing machine and “climbs” as fast as he can for fifteen minutes. At the end of that time he is breathing hard and his quadriceps and other leg muscles are aching. What is the physiological explanation for these Symptoms?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Jason is a 21-year-old university student presenting with pain in the back of his right thigh. The pain
started yesterday during soccer game. Jason went to kick the ball and felt an immediate 'pull' in the
back of his right upper thigh. He had to limp off the field and reported mild pain in his right
hamstring muscles with most active movements involving knee flexion and extension. Jason can still
walk around without too much discomfort.
a) What is the most likely cause of Jason's pain?
After a 30 min Weight Lifting Session (Muscle, Cardiovascular)
1) Identify the specific disturbance(s). What is being moved away from set point or resting values?
2) How is (are) the changes detected? What are the physiological sensors?
3) How will body regulate the changes to return to normal?
4) Are there specific interactions between the 2 systems that help detection or help regulate the changes back to rest?
You are at the gym and doing strength training. You feel in good shape and should try to break personal records in squats. You place the bar on your back and begin to take in, that is, your motor neurons begin to send action potentials through all your motor units to the thigh muscles.
What is the contraction called when you a) bend down and b) are in good shape and can generate more force than the bar weighs c) stay standing in one and the same position without being able to push yourself up in a standing position?
Chapter 6 Solutions
Human Biology (MindTap Course List)
Ch. 6 - In a general sense, how do skeletal muscles...Ch. 6 - In the diagram below, label the fine structure of...Ch. 6 - How do actin and myosin interact in a sarcomere to...Ch. 6 - How does a muscle fiber incur an oxygen debt?Ch. 6 - What is the function of the sarcoplasmic reticulum...Ch. 6 - Explain why (a) calcium ions and (b) ACh are vital...Ch. 6 - What is a motor unit? Why does a rapid series of...Ch. 6 - What are the structural and functional differences...Ch. 6 - Prob. 1SQCh. 6 - Prob. 2SQ
Ch. 6 - Prob. 3SQCh. 6 - The _____ is the basic unit of muscle contraction....Ch. 6 - Skeletal muscle contraction requires _________. a....Ch. 6 - Nerve impulses first stimulate a skeletal muscle...Ch. 6 - Prob. 7SQCh. 6 - Prob. 8SQCh. 6 - Prob. 9SQCh. 6 - Prob. 10SQCh. 6 - You are training athletes for the 100-meter dash....Ch. 6 - Prob. 2CTCh. 6 - Prob. 3CTCh. 6 - At the gym Sean gets on a stair-climbing machine...
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
- Most immediate physiological adjustments to exercise occur prior to any change in tissue metabolic demand for oxygen or nutrients. This occurs because exercise increases sympathetic nervous system activity. With your knowledge of exercise and the control of alpha motor neurons by the primary motor cortex of the brain, how does increased exercise influence the sympathetic nervous system?arrow_forwardJason is a 21-year-old university student presenting with pain in the back of his right thigh. The pain started yesterday during soccer game. Jason went to kick the ball and felt an immediate 'pull' in the back of his right upper thigh. He had to limp off the field and reported mild pain in his right hamstring muscles with most active movements involving knee flexion and extension. Jason can still walk around without too much discomfort. c) What is the most likely cause of Jason's pain? **Kindly justify your answers with cited references.arrow_forwardMuscular atrophy occurs when:arrow_forward
- Discuss the similarities and differences by which Ca2+ activity is involved in initiating muscle contraction in skeletal versus smooth muscle fibers (hint: include Ca2+ sources, proteins it binds to, and signaling cascade it activates leading to contraction). (max 12 sentences)arrow_forwardLoss of muscle tone is associated with which deficiency?arrow_forwardBilly has strained a muscle during a recent badmitton match. Describe a treatment plan to help him recover.arrow_forward
- Explain the term Rigor Mortis and describe how it occursarrow_forwardAny abnormal condition of skeletal muscles is known as _______________________.arrow_forwardKelly was diagnosed with myasthenia gravis. She was mistakenly overdoses on neostigmine (an ACHE inhibitor). After an initial period of intense muscle contractions and difficulty breathing, Kelly loses consciousness. Paramedic respond by manually ventilate her lungs until she can get to the hospital. Explain the reasoning of this response.arrow_forward
- Angus is an 18-year-old young adult, who is riding his skateboard in a city park. He is not wearing protective gear, including a helmet. When a friend distracts his attention, he runs head-on into a planter and is thrown over the planter box onto the concrete, landing on his left side. He immediately experiences pain in his left side, left wrist, and abdomen. His left wrist is angulated and obviously broken.A head-to-toe assessment demonstrates small, superficial scrapes on the patient's forehead and left cheek. His facial structures appear to be intact. Neurologically, he is normal, with a Glasgow Coma Scale (GCS) score of 14. He has no complaints of shortness of breath, and his chest wall shows no obvious external injury. An x-ray of his left wrist shows a comminuted fracture of his left radius and ulna.Angus is taken to the operating room for orthopaedic repair of his left wrist. After surgery, he is admitted to the orthopaedic floor with orders for pain medication as needed.Q1.…arrow_forwardYou are at the gym and doing strength training. You feel in good shape and decided to try to break your personal records in squats. You place the bar on your back and begin to push down, that is, your motor neurons that begins to send action potentials through all your motor units to the quad muscles. 1. What is the contraction called when you a) bend down b) are in good shape and can generate more force than what the bar weighs c) stay standing in one and the same position without being able to push yourself up while standing?arrow_forwardWhich activity would be more likely to create an oxygen debt in an individual who regularly exercises: swimming laps or lifting weights?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Human Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage Learning
Medical Terminology for Health Professions, Spira...Health & NutritionISBN:9781305634350Author:Ann Ehrlich, Carol L. Schroeder, Laura Ehrlich, Katrina A. SchroederPublisher:Cengage Learning
Human Biology (MindTap Course List)
Biology
ISBN:9781305112100
Author:Cecie Starr, Beverly McMillan
Publisher: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
KINE 2310-Chapter 4: Philosophy of Physical Activity; Author: HBU Online Course Development;https://www.youtube.com/watch?v=8Ky6t3nvP_4;License: Standard youtube license