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 20, Problem 3PL
The muscle primarily responsible for an action is the
a. synergist
b. agonist
c. antagonist
d. origin.
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Chapter 20 Solutions
Laboratory Manual for Human Anatomy & Physiology Main Version
Ch. 20 - The outermost layer of connective tissue of a...Ch. 20 - The thick myofibril filament of a sarcomere is...Ch. 20 - The muscle primarily responsible for an action is...Ch. 20 - The neuron and the muscle fibers it innervates is...Ch. 20 - The functional contractile unit of a muscle fiber...Ch. 20 - Prob. 6PLCh. 20 - A synergistic muscle contraction assists the...Ch. 20 - The plasma membrane of a muscle fiber (cell) is...Ch. 20 - Match the terms in column A with the definitions...Ch. 20 - FIGURE 20.7 Label this transmission electron...
Ch. 20 - When stimulated to contract, the sarcomeres...Ch. 20 - Prob. 3.1ACh. 20 - The ____________ of a muscle is attached to a more...Ch. 20 - A muscle responsible for most of an action is...Ch. 20 - Assisting muscles of an agonist are called...Ch. 20 - Antagonists are muscles that resist the actions...Ch. 20 - When the forearm is extended at the elbow joint,...Ch. 20 - When the biceps brachii acts as the agonist, the...Ch. 20 - A _____________ is a synergistic muscle that will...
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- The muscle responsible for action in a single direction is calleda. prime mover.b. antagonist.c. synergistic.d. adduction.arrow_forwardWhen the length of the muscle stays the same but the force increases during contraction it is referred to as an: A. Isotonic Contraction B. Isometric Contraction C. Isotreppid Contraction D. Isochronal Contractionarrow_forwardIf a stretch reflex is activated, the muscle will a. lengthen. b. relax. c. shorten. d. none of abovearrow_forward
- The muscle in the upper arm that is used as an injection site is thea. triceps.b. biceps.c. trapezius.d. deltoid.arrow_forwardThe working part of the muscle is called: A. Head B. Belly C. Tendon D. Aponeurosisarrow_forwardWhich region of the sarcomere does not change length between muscle relaxation and muscle contraction A. A band B. Z disc C. I Band D. H Zonearrow_forward
- Muscle spindles trigger the muscle to a. lengthen. b. relax. c. shorten. d. remain fixed.arrow_forwardDuring muscle contraction, the I band a. hides the H zone. b. shortens or narrows. c. overlaps the Z line. d. always remains the same length.arrow_forwardA decline in a skeletal muscle's ability to maintain a constant level of force or tension after prolonged repetitive stimulations is called A. complete tetanus B. recruitment C. fatique D. rigor mortisarrow_forward
- To make a muscle contract more strongly,the nervous system can activate more motorunits. This process is calleda. recruitment.b. summation.c. incomplete tetanus.d. twitch.e. concentric contractionarrow_forwardWhen this large muscle contracts, the vertical dimensions of the thoracic cavity increase. a. external intercostal b. internal intercostal c. diaphragm d. transversus thoracisarrow_forwardWhich muscle contracts in the tension reflex? a. all muscles contract at the same time in this reflex b. contralateral flexor c. ipilateral flexor d. contralateral extensor e. ipilateral extensorarrow_forward
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