BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
expand_more
expand_more
format_list_bulleted
Videos
Question
Chapter 45, Problem 2S
Summary Introduction
To explain:
The change in energy source in skeletal muscles as one switches from running to jogging and why.
Introduction:
To do any kind of work, the muscles have to contract. Muscle contraction is an active process which implies that it needs energy (ATP). Energy can be produced aerobically (in presence of oxygen) or even anaerobically (in absence of oxygen).
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
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?
You 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?
7. You start running as fast as you can, then you settle into a jog that you can easily maintain. How do energy sources utilized by skeletal muscles change during the switch? Explain why
Chapter 45 Solutions
BIOLOGY
Ch. 45.1 - Compare hydrostatic skeletons, exoskeletons, and...Ch. 45.1 - Explain how animals with hydrostatic skeletons...Ch. 45.2 - Prob. 1LOCh. 45.2 - Prob. 2LOCh. 45.2 - Prob. 3LOCh. 45.3 - Prob. 1LOCh. 45.4 - Prob. 1LOCh. 45.4 - Prob. 2LOCh. 45.4 - Prob. 3LOCh. 45.5 - Prob. 1LO
Ch. 45.5 - Describe how friction and gravity affect...Ch. 45.5 - Prob. 3LOCh. 45 - Prob. 1IQCh. 45 - Exoskeletons and endoskeletons differ in that a....Ch. 45 - Worms use a hydrostatic skeleton to generate...Ch. 45 - Bone develops by one of two mechanisms depending...Ch. 45 - Which of the following statements best describes...Ch. 45 - Motor neurons stimulate muscle contraction via the...Ch. 45 - Prob. 6UCh. 45 - If you wanted to study the use of ATP during a...Ch. 45 - Place the following events in the correct order....Ch. 45 - You take X-rays of two individuals. Ray has been a...Ch. 45 - You have identified a calcium storage disease in...Ch. 45 - How do the muscles move your hand through space?...Ch. 45 - How can osteocytes remain alive within bone? a....Ch. 45 - Swimming underwater using forelimbs for propulsion...Ch. 45 - If a drug inhibits the release of ACh, what will...Ch. 45 - Prob. 1SCh. 45 - Prob. 2SCh. 45 - The nerve gas methylphosphonofluoridic acid...Ch. 45 - If natural selection favors the evolution of wings...
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
- Which of the following alters the force of skeletal muscle contraction? the frequency of stimulation does NOT alter the force of skeletal muscle contraction alters the force of skeletal muscle contraction the size of the fibers being stimulated does NOT alter the force of skeletal muscle contraction alters the force of skeletal muscle contraction the number of muscle fibers stimulated does NOT alter the force of skeletal muscle contraction alters the force of skeletal muscle contraction the length- tension relationship of the muscle does NOT alter the force of skeletal muscle contraction alters the force of skeletal muscle contractionarrow_forwardFigure 38.37 Which of the following statements about muscle contraction is true? The power stroke occurs when ATP is hydrolyzed to ADP and phosphate. The power stroke occurs when ADP and phosphate dissociate from the myosin head. The power stroke occurs when ADP and phosphate dissociate from the actin active site. The power stroke occurs when Ca2+ binds the calcium head.arrow_forwardWhich of the following does NOT describe treppe? It is also referred to as the "staircase" effect. An increase in stimulus intensity is required to see the effect. An incremental increase in force occurs. A period of relaxation can be seen on the muscle twitch tracing.arrow_forward
- Why is it important improve our muscular fitness?arrow_forwardHow does muscles get bigger with resistance training? atrophy occurs myopathy occurs muscle cells grow muscle cells dividearrow_forwardWhen electrically stimulating a skeletal muscle and measuring the force of muscle contraction, which of the following are true? Check All That Apply Increasing the stimulus will increase the muscle contraction force. The recruitment of motor units will increase the muscle contraction force. One weak stimulus will cause an increase in muscle contraction force. Increasing the force will increase the muscle contraction stimulus. Once maximum stimulus has been reached, the muscle will not contract with increased force.arrow_forward
- In some fitness exercises you will build muscle mass but do not train the muscle to be effective. What type of training will do that and why do people do these types of trainings?arrow_forwardHow would ine generate more muscle tension to pick up something heavy? Increase activation of motor units Increase muscle tone Decrease calcium release Decrease muscle hypertrophy Decrease muscle hyperplasiaarrow_forwardWhich of the following happens within the sarcomere during muscle contraction? The myosin filaments "walk" along the actin filaments bidirectionally towards the Z lines. The myosin filaments shorten. The actin filaments shorten. The H bands and I bands both increase in width.arrow_forward
- In the process of muscle contraction, which of the following steps requires hydrolysis of ATP to complete? movement of myosin head, pulling the thin filament binding of myosin head to active site on actin resetting of the myosin head back to its ready position letting go of myosin head from the active site on actin sliding of tropomyosin causing exposure of actinarrow_forwardWhich of the following statements are true? Multiple Choice Muscles work in antagonistic pairs because if one muscle shortens during contraction, the opposing muscle across the joint must relax. Muscles work in antagonistic pairs because tendons lengthen during contraction. Muscles work in antagonistic pairs because muscles lengthen during contraction. Muscles work in antagonistic pairs because if one muscle pushes during contraction, the opposing muscle across the joint must pull.arrow_forwardWhat does constant stimulation of a muscle fiber cause? Decreased tension Constant tension Increased motor unit size Tetanus Really mad muscle fibersarrow_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
Lifetime Physical Fitness & WellnessHealth & NutritionISBN:9781337677509Author:HOEGERPublisher:Cengage
Biology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStax
Human Biology (MindTap Course List)
Biology
ISBN:9781305112100
Author:Cecie Starr, Beverly McMillan
Publisher:Cengage Learning
Lifetime Physical Fitness & Wellness
Health & Nutrition
ISBN:9781337677509
Author:HOEGER
Publisher:Cengage
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
What is Metabolism?; Author: Stated Clearly;https://www.youtube.com/watch?v=nRq6N5NGD1U;License: Standard youtube license