BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN: 9781305967359
Author: STARR
Publisher: CENGAGE L
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Chapter 32, Problem 4SA
Summary Introduction
Introduction:
Muscles provide strength, balance, and posture to the body. There are three types of muscles in a vertebrate: skeletal, smooth and cardiac muscles. Cardiac and smooth muscles are involuntary while skeletal muscles are voluntary in nature.
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Which of the following statements is True?a. Tendons contract using the sliding filament mechanism.b. Tendons are composed primarily of cartilage fibers.c. Tendons attach bones to bones at joints.d. Tendons attach muscles to bone.
Tendon sheaths
a.help anchor the tendon to the muscle
b.act as friction-reducing structures
c.are extensions of periosteum
d.are lined with dense irregular connective tissue
Which of the following is true?
Tendons join bone to bone
Tendons join muscle to bone and other structures
Ligaments join bone to bone
Ligaments join muscle to bone and other structures
a. and b.
b. and c.
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- Which of the following changes takes place when a skeletal muscle contracts?A. Z discs move farther apart.B. Actin filaments contract.C. Myosin filaments contract.D. Sarcomeres become shorter.arrow_forwardIn relaxed muscle, the myosin-binding site on actin is blocked by ________. a. titin b. troponin c. myoglobin d. tropomyosinarrow_forwardWhen you bring your hand to your shoulder, your biceps muscle ____ and your triceps muscle ____. A.relaxes; contracts B.contracts; contracts C.contracts; relaxes D.lengthens; shortensarrow_forward
- Which of the following muscle tissue types does not exhibit striations? a. cardiac muscles b. skeletal muscles c. smooth muscles d. a and b e. b and carrow_forwardMuscle relaxation occurs when ________. a. calcium ions are actively transported out of the sarcoplasmic reticulum b. calcium ions diffuse out of the sarcoplasmic reticulum c. calcium ions are actively transported into the sarcoplasmic reticulum d. calcium ions diffuse into the sarcoplasmic reticulumarrow_forwardThe actual contractile units of muscle, called _____, extend from middle of one _____ to middle of next along length of myofibrils. A. T tubule, M line B. sarcoplasmic reticulum, H zone C. sarcomeres, I band D. sarcolemma, A bandarrow_forward
- Which of the following is the site of calcium ion storage within muscles? a. T tubules b. sarcoplasmic reticulum c. actin filaments d. myosin filamentsarrow_forwardNervous stimulation of musclesa. occurs at a neuromuscular junction.b. results in an action potential that travels down the T system.c. causes calcium to be released from expanded regions of the sarcoplasmic reticulum.d. All of these are correctarrow_forwardTo move bones via contraction Group to Choose a. Circulatory b. Respiratory c. Nervous d. Muscular e. Integumentary f. Urinaryarrow_forward
- Tendons are composed of ________connective tissue.a. skeletalb. areolarc. dense irregulard. yellow elastice. dense regulararrow_forwardThe bundle of dense regular connective tissue that attaches a skeletal muscle to bone is called a(n) a. tendon. b. ligament. c. endomysium. d. fascicle.arrow_forwardMuscle that has a striped appearance is described as being a. elastic b. nonstriated c. excitable d. striatedarrow_forward
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