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 7PL
A synergistic muscle contraction assists the agonist
a. True ________
b. False ______
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For each contraction below indicate whether it is an example of a muscle twitch, unfused tetanus, or fused tetanus. ______________________ 4. muscle spasm ______________________ 5. facial muscle tic ______________________ 6. cardiac fibrillation ______________________ 7. muscle cramps
In general, fast-twitch fibers generate less power than slow-twitch fibers.
A. True
B. False
When a muscle is performing a primary action and inserts close to the joint where the movement is taking place, that muscle is known as a(an) ______________ muscle.
A and B
C and D
B and C
A and D
C - shunt
D - agonist
B - antagonist
A - spurt
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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- Describe the following terms Muscle Insertion Agonist Antagonist Synergist Abductorarrow_forwardMuscle cramps are fundamentally an issue at the tissue level of organization due to an imbalance in the amounts of epithelial and connective tissues. A. True B. Falsearrow_forwardMotor units in a muscle contract _______________ and this helps _______________ fatigue. a. synchronously; prevent b. asynchronously; prevent c. synchronously; promote c. asynchronously; promote d. b and carrow_forward
- A fixator is a muscle that immobilizes a bone and creates a stable base. Why is this important? a. O b. O c. It allows the agonist to relax and not work as hard O d. It allows the agonist to direct as much force as possible into the prime movement Contraction of the fixator directly assists the antagonist with its action It causes the antagonist to relax, making the prime movement easierarrow_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_forwardA/An ____________________________ injury can be a strain or tear on any of the three muscles that straighten the hip and bend the knee. Achilles tendon hamstring myofascial shin splintarrow_forward
- Muscle Shapes Please label the following muscle types. In the numbers below the photo, list a muscle who is built in that particular muscular shape. Circular 2.convergent SumulAipenhate 4Parallel 7Cnipenate 3Bipennate 5. 1. m Outh 2. pectovalis major 6. 3. 7. 4. Defining Muscle Terms Define the following terms in your own words. AL Isometric: Isotonic: Prime mover Antagonist:arrow_forwardIdentify which muscle fiber types would be recruited for each of the following functions. Explain your answer. a. walking b. standing c. lifting a heavy object and immediately putting it downarrow_forwardFast oxidative glycolytic fibers in skeletal muscle are used Select one: O a. intermittently, for activities requiring more force output than the fast glycolytic fibers alone can produce. O b. constantly, for postural activities such as standing and sitting. O c. intermittently, for activities requiring more force output than the slow oxidative fibers alone can produce. O d. only for motions requiring maximum power output, such as jumping.arrow_forward
- Muscle contraction and cytokinesis both require motor proteins and microtubules. Select one: a. False b. True Clear my choicearrow_forwardDelayed onset muscle soreness (DOMS) is most closely associated with which type of muscle action? a. Flurometic b. Isometric c. Anabolic d. Concentric e. Eccentricarrow_forwardDue to fiber alignment, the quadriceps muscle group is better at producing increased force, not velocity. True Falsearrow_forward
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