EP HUMAN BIOLOGY-MODIFIED MASTERING
8th Edition
ISBN: 9780134326436
Author: Johnson
Publisher: PEARSON CO
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 6, Problem 5AWK
Summary Introduction
To review:
The rationale behind the thinking that muscles do not actively push the weight up during leg presses.
Introduction:
Muscles create movements or resist movement depending on their location and the task. The primary action of the muscles is a contraction. When the skeletal muscles contract, they pull the bone attached to them, while the joint acts as a lever. The movement of the bones creates displacement and the work is done. However, the muscles also oppose the movements.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
You and your friend are doing leg presses in the gym one day. As you extend your legs, the stack of weights goes up, and when you bend your legs, the stack goes down. Your friend says your muscles are actively pushing the weights up. Explain to him where he is wrong in his thinking
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?
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
EP HUMAN BIOLOGY-MODIFIED MASTERING
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
- Which of the following statements is true? Muscles push on bones; they do not pull The end of the muscle attached to the bone that moves least is the origin The end of the muscle that attaches to the bone that moves the most is the antagonist The synergist is the the muscle that opposes the primary movementarrow_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. A muscle is strained or torn when excessive tension or tensile forces within the muscle cause muscle fibres and their surrounding connective tissues to fail. What type of muscle contraction is known to produce the most tension and contribute more to cellular damage? What is the most likely cause of Jason’s pain? Suggest what type of injury Jason has sustained and discuss what structures are typically damaged in muscle strain?arrow_forwardDescribe each muscle needed to contract for specific movement and each muscles action during that action. Each muscle firing is it's own step. Something simple like kicking a ball is one action with multiple muscles firing it that action. You need at least 5 muscles involved in your action Example: Description: Picking up a glass of water. Muscles: Biceps, brachialis. Step 1: The brachialis has an origin at the humerus and inserts at the ulna. Contracting is a flexion action. Example: The [Muscle] has an origin at the [Bone] and inserts at the [Bone]. Contracting is a [Action] actionarrow_forward
- "If you step on a sharp object, you flex your leg to avoid the danger. At the same time, your other leg is extended so that you don’t fall off. This method of coordinating muscle contraction so as to prevent muscles from working against each other is called" flexor withdrawal reciprocal inhibition tendon reflex spinal cordarrow_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_forwardThink about a patient seated in a wheelchair (paraplegic) who must use his/her upper extremities to press down to lift his/her body from a seated position to transfer. What muscles would be involved in this movement (pressing down onto the support surface to lift the body, NOT the full transfer) for the patient to safely lift and support his/her body weight during the movement?arrow_forward
- Which of the following is NOT true of an eccentric contraction? Contraction produces a greater force than a concentric contraction. Contraction is used as an acceleration activity. Muscle attachments move farther apart. Movement occurs with gravity.arrow_forwardWhich of the following best describes rigidity? It affects only antigravity muscles It causes flaccid paralysis It occurs in an upper motor neuron lesion It affects both gravity and antigravity musclesarrow_forwardThe muscle contractions required to maintain balance and posture while moving would be considered: voluntary (planned) movements. rhythmic movements. reflex movements. glacial movements.arrow_forward
- the muscle that is "mainly" responsible for a movement is called the? the muscle that acts in opposition of the movement is called the? what two terms describe a body temp either above or below normal? the muscular function of maintaining posture is possible due to what type of contraction?arrow_forwardThe head balanced on the spine represents lever system. What is true about this type of lever system? This type of lever system is found along the axis of the body The muscle lever and resistance lever are equal All of the answers are correct O It is a Class I lever systemarrow_forwardWhich of the following correctly states the importance of an action potential to muscle contration? The SR will only release Ca2+ if it has been electrically stimulated. Sarcomeres require a negative electrical charge to start sliding. Actin and myosin must be electrically charged to create a cross-bridge. ATP cannot be split into ADP and Pi without an action potential.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Lifetime Physical Fitness & WellnessHealth & NutritionISBN:9781337677509Author:HOEGERPublisher:Cengage
- Human Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage Learning
Lifetime Physical Fitness & Wellness
Health & Nutrition
ISBN:9781337677509
Author:HOEGER
Publisher:Cengage
Human Biology (MindTap Course List)
Biology
ISBN:9781305112100
Author:Cecie Starr, Beverly McMillan
Publisher:Cengage Learning
GCSE PE - ANTAGONISTIC MUSCLE ACTION - Anatomy and Physiology (Skeletal and Muscular System - 1.5); Author: igpe_complete;https://www.youtube.com/watch?v=6hm_9jQRoO4;License: Standard Youtube License