Laboratory Manual For Human Anatomy & Physiology
4th Edition
ISBN: 9781260159363
Author: Martin, Terry R., Prentice-craver, Cynthia
Publisher: McGraw-Hill Publishing Co.
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Textbook Question
Chapter 20, Problem 3.5A
Antagonists are muscles that resist the actions of________________________ and cause movement in the opposite direction.
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Chapter 20 Solutions
Laboratory Manual For Human Anatomy & Physiology
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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- Passive force in skeletal muscle fibers is generated by ______________________ the muscle.arrow_forwardThe musculocutaneous nerve innervates the biceps brachii, brachialis, and coracobrachialis muscles. These muscles are contained within which muscle compartment? ________________________________. The musculocutaneous nerve also innervates the skin of the lateral forearm.arrow_forwardA muscle contraction that occurs without the muscle shortening (like tryiing life an immovable object) is called __________________ contraction.arrow_forward
- The biceps reflex tests a muscle spindle reflex arc (like the patellar reflex). The biceps brachii is innervated by the musculocutaneous nerve and the triceps brachii is innervated by the radial nerve. When the biceps tendon is tapped with a hammer, action potential generation ___________ in the musculocutaneous nerve and _____________ in the radial nerve. Select one: a. Increases; decreases b. Decreases; increases c. Decreases; decreases d. Increases; increasesarrow_forwardA muscle responsible for most of a movement is called a(n) _______________________.arrow_forwarda contraction in which a muscle shortens in length is called an ____________contraction.arrow_forward
- Fill in the blank: The effector of the knee-jerk reflex is the _______________________ muscle.arrow_forwardIf we stimulate a skeletal muscle at a voltage above the maximal stimulus voltage and above the fusion frequency, the resulting contraction will exert the _______________________ (3 words).arrow_forwardFor this set of questions you will need to stand up from the chair you are sitting in, and then sit back down. Do this slowly so that you can pay attention to what is happening, and if necessary feel the tone of the muscles in your legs as your standing and sitting (If you are lying down or standing start from a seated position, then stand, then sit). a) During the standing phase, what function is being carried out at the hip joint? b) What are the prime movers (agonists) that are responsible for this particular movement (Hint: You should be able to feel them activated)? c) During the standing phase, what function is being carried out at the knee joint? d) What are the prime movers (agonists) that are responsible for this particular movement (Hint: You should be able to feel them activated)? e) As you sit back down, you realize that some of the same muscles activated during standing are also active when going from standing to sitting. Explain?arrow_forward
- A muscle that works with another to produce the same or similar movement is called a/an ___________.arrow_forwardIs the length of muscle contraction at the beginning of tetanic contraction the same or different from the lengthof the single muscle contractions before tetanic contraction occurred? ___________ How do you explain this?arrow_forwardHyperkinesia means abnormally increased muscle function or activity. _______________ _______________ _______________ _______________arrow_forward
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