Muscle with a reduced blood supply and low numbers of mitochondria is likely Fast, with strong contractions that is easily fatigued. Slow, with weak contractions is easily fatigued. Fast, with strong contractions that is not easily fatigued Slow, with strong contractions that is not easily fatigued. Fast, with weak contractions that is easily fatigued.

Muscle with a reduced blood supply and low numbers of mitochondria is likely Fast, with strong contractions that is easily fatigued. Slow, with weak contractions is easily fatigued. Fast, with strong contractions that is not easily fatigued Slow, with strong contractions that is not easily fatigued. Fast, with weak contractions that is easily fatigued.

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter2: Cell Physiology

Section: Chapter Questions

Problem 4TAHL: Why do you think a person is able to perform anaerobic exercise (such as lifting and holding a heavy...

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Similar questions

Nerve impulses first stimulate a skeletal muscle fiber at _______. a. T tubules b. sarcomeres c. neuromuscular junctions d. actin binding sites
Skeletal muscle contraction requires _________. a. calcium ions b. ATP c. arrival of a nerve impulse d. all of the above
After death, a person no longer makes ATP, so calcium stored in the sarcoplasmic reticulum diffuses down its concentration gradient into the muscle cytoplasm. This result is rigor mortis----an unbreakable state of muscle contraction that stiffens the body for a few days until muscles begin to decay. Explain why this contraction occurs.
The _____ is the basic unit of muscle contraction. a. myofibril b. sarcomere c. muscle fiber d. myosin filament
Figure 38.37 Which of the following statements about muscle contraction is true? The power stroke occurs when ATP is hydrolyzed to ADP and phosphate. The power stroke occurs when ADP and phosphate dissociate from the myosin head. The power stroke occurs when ADP and phosphate dissociate from the actin active site. The power stroke occurs when Ca2+ binds the calcium head.
Why do you think a person is able to perform anaerobic exercise (such as lifting and holding a heavy weight) only briefly but can sustain aerobic exercise (such as walking or swimming) for long periods? (Hint: Muscles have limited energy stores.)
Muscle fibers that have a high number of mitochondria, contain largeamounts of myoglobin, and exhibit low rates of ATP hydrolysis arecalled __________ fibers.a. slow-glycolyticb. fast-glycolyticc. intermediated. fast-oxidativee. slow-oxidative
Fast-twitch muscle fibers have which of the following characteristics?a. fewer number of mitochondriab. rely on fermentation and creatine phosphate pathwaysc. are primarily anaerobicd. provide for a quick release of energye. All of these are correct.
Which ATP-producing skeletal muscle metabolic pathway(s) require(s) oxygen? Coupled reaction of creatine phosphate and ADP Glycolysis and lactic acid formation Complete breakdown of glucose into CO2 and H2O all of the above none of the above
During muscular contraction, cross-bridges form between _____ and _____ . Multiple Choice a) myosin, tropomyosin b) myosin, troponin c) troponin, calmodulin d) actin, tropomyosin e) actin, myosin
Single-unit smooth muscle cells can stimulate each other because they have:|- a. pacemakers. b. diffuse junctions. c. gap junctions. d. tight junctions. e. calcium pump
muscle cells are made up of? A. Z bars b. actin c. myosin d. myofibrils