Human Biology: Concepts and Current Issues (8th Edition)
8th Edition
ISBN: 9780134042435
Author: Michael D. Johnson
Publisher: PEARSON
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Chapter 6, Problem 15TY
Summary Introduction
Introduction:
All the three types of muscles are either voluntary, an individual can control their movement, or involuntary, an individual cannot control their movement.
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Which protein is not part of the thin filament in a muscle fiber?
A. Actin
B. Myosin
C. Tropomyosin
D. Troponin
What do skeletal muscle contractions share in common with smooth muscle contractions?a. Both types of contractions do not require calcium ions for a contraction to occur.b. Both types of contractions generate little force or a weak force.c. Both types of contractions consume very little ATP.d. Both types of contractions result from thick and thin filaments sliding past one another.
Which of the following statements is true?
a.Cardiac muscle cells are found in the heart and large blood vessels.
b.Cardiac muscle cells have many nuclei.
c.Striated muscle cells are long and cylindrical with many nuclei.
d.Smooth muscle cells have T tubules.
Chapter 6 Solutions
Human Biology: Concepts and Current Issues (8th Edition)
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
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- muscle cells are made up of? A. Z bars b. actin c. myosin d. myofibrilsarrow_forwardWhich type of muscle has muscle cells that connect to one another at junctions called intercalated disks? A. Striated voluntary muscle B. Nonstriated involuntary muscle C. Nonstriated voluntary muscle D. Striated involuntary musclearrow_forwardBotulism toxin inhibits the release of acetylcholine at the neuromuscular junctions. What effect does this have on the muscle activity? a. Muscles will contract continuously. b. Muscles will contract sporadically, without conscious control. c. Muscles will not contract because they will not receive nerve stimulation. d. There will be no effect on muscle activityarrow_forward
- Muscle that has a striped appearance is described as being a. elastic b. nonstriated c. excitable d. striatedarrow_forwardThe type of muscle cell under voluntary control is the ________. a. smooth muscle b. skeletal muscle c. cardiac muscle d. visceral musclearrow_forwardWhich of the following is true? A. Muscle fibers either will contract with all the force possible under existing conditions or will not contract at all. B. Skeletal muscles can contract with varying degrees of strength given different circumstances. C. Muscle length does not have an effect on contractile strength. D. Metabolic condition of the myocyte does not have an effect on contractile strength.arrow_forward
- Which of the following statements best describes the sliding filament mechanism of muscle contraction? a. Actin and myosin filaments do not shorten, but rather, slide past each other. b. Actin and myosin filaments shorten and slide past each other. c. As they slide past each other, actin filaments shorten, but myosin filaments do not shorten. d. As they slide past each other, myosin filaments shorten, but actin filaments do not shorten.arrow_forwardWhat structure in skeletal muscle cells functions in calcium storage? a.myofibrillar network b.sarcoplasmic reticulum c.intermediate filament network d.mitochondriaarrow_forwardDuring muscle contraction, calicum ions bind to A. Actin Filaments B. Tropomyosin C. Troponin D. Myosin Filamentsarrow_forward
- Which of the following sentences is NOT correct? A. White fibers make up fast-twitch muscle B. Muscle spindle is a type of receptor that detects muscle length C. Exocrine gland secretes its product directly into the bloodstream D. When an action potential is generated within a motor neuron, every muscle cell of the motor unit is stimulated to contractarrow_forwardPeristalsis is the wavelike, constant, and rhythmic alternating contractions and relaxations of smooth muscle layers. Which smooth muscle layer(s) is involved in peristalsis? a. longitudinal b. circular c. lumen d. b and c e. a and barrow_forwardWhich choice lists the components of a muscle from the smallest unit to the largest unit? A. myofibril, filament, sarcomere, muscle fiber B. filament, sarcomere, myofibril, muscle fiber C. sarcomere, filament, muscle fiber, myofibril D. muscle fiber, filament, sarcomere, myofibrilarrow_forward
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