Laboratory Manual for Human Anatomy & Physiology Main Version
4th Edition
ISBN: 9781260159110
Author: Terry Martin
Publisher: Mcgraw-hill Higher Education (us)
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Textbook Question
Chapter 21, Problem 2.2.1A
Complete the following:
Compare the strength of the dominant forearm to that of the nondominant forearm.
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Identify the joint actions caused by the concentric contractions of the following muscles. Check all appropriate boxes.
Look at the elbow joint x-ray. Why is 90° the optimal joint angle for
biceps activation? What would happen during flexion/extension?
Maximal muscle force changes continuously throughout the elbow flexion according to the joint angle.
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Chapter 21 Solutions
Laboratory Manual for Human Anatomy & Physiology Main Version
Ch. 21 - What factors in addition to gender contribute to...Ch. 21 - Prob. 1.2.3ACh. 21 - What is meant by the term motor unit recruitment?Ch. 21 - Prob. 1.2.5ACh. 21 - Complete the following: Compare the strength of...Ch. 21 - Complete the following: Is there a difference in...Ch. 21 - Complete the following: Define muscle fatigue, and...Ch. 21 - Complete the following: Define dynamometry.
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- Describe the qualities of the muscle fiber arrangement and tendon attachments of biceps femoris. Discuss synergist(s) and antagonist(s) muscles and their attachment sites of biceps femoris. Describe when synergists and antagonists contract compared to the biceps femoris.arrow_forwardUpper Limb Muscle Actions: Review each muscle action. Then list the actions (movements) movements below and list all of the muscles that are used to create that movement: · Shoulder flexion · Shoulder extension · Shoulder horizontal abduction · Shoulder horizontal adduction · Shoulder abduction · Shoulder adduction · Shoulder medial rotation · Shoulder lateral rotation · Elbow flexion · Elbow extension · Forearm pronation · Forearm supination · Wrist extension · Wrist flexion · Wrist abduction · Wrist adduction · Hand digits 2-5 extension · Hand digits 2-5 flexion · Thumb extension · Thumb flexion · Hand digits oppositionarrow_forwardIdentify the joint actions caused by the concentric contractions of the following muscles. Check appropriate columns. You might have to check off more than one box per muscle:arrow_forward
- Think of two functional activities that can improve the strength of flexor digitorum superficialis / flexor digitorum profundus. Provide a short description and justificationarrow_forwardList all six possible movements that can occur at the shoulder joint and name the prime mover(s) of each movement. Then name their antagonists.arrow_forwardDuring a Physical Education class, you ask your students to perform a standing vertical jump. Identify the type of muscle contraction involved in the jump and describe the movement patterns of the concentric and eccentric phases. Outline the agonists, antagonists and synergist muscles, which contribute to maximum jump height. Identify the major lower body joints and joint movements, which contribute to the concentric phase of the jump.arrow_forward
- Look at the elbow joint x-ray. Why is 90° the optimal joint angle for biceps activation? What would happen during flexion/extension? Explain in detail !arrow_forwardDescribe the following terms Muscle Insertion Agonist Antagonist Synergist Abductorarrow_forwardThe following are types of movement: Explain each terminology and how does these movement works. Cite example for each movement. (Ex. for ADDUCTION- Bringing fingers together from a spread wide apart position) Flexion Extension Abduction Adduction Rotationarrow_forward
- Name and briefly describe the articulating bones and muscles that produce movement at the elbow joint.arrow_forwardWhat is the joint movement at the tibiofemoral (knee) joint? What type of contraction that is controlling this joint movement? What muscles are controlling the tibiofemoral (knee) joint movement?arrow_forwardDifferentiate between supination and pronation of the forearm.arrow_forward
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