BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN: 9781305967359
Author: STARR
Publisher: CENGAGE L
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Question
Chapter 32, Problem 1CT
Summary Introduction
To determine:
The ways in which creatine supplements are beneficial to people with muscular dystrophy.
Introduction:
A mature skeletal muscle consists of thousands of muscle fibers which are known as myofibrils. These are threadlike proteins which are arranged in the identical contractile units, called sarcomere. The thick filament of the sarcomere has a motor protein which is called myosin, and the thin filament has actin as a motor protein.
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- During contraction, where does the calcium that binds to troponin come fromarrow_forwardThrough which ATP-generating mechanism can long-lasting muscle contractions be sustained? a. oxidative catabolism b. glycolysis c. creatine phosphate reaction d. anaerobic catabolismarrow_forwardWith age, the collagen-containing connective tissue coverings of skeletal muscles increase and the number of muscle fibers decreases. Is meat from an older or a younger animal more tender? Explain.arrow_forward
- Skeletal muscle is associated to the _________________. What makes up the muscle fiber?arrow_forwardWhy is the muscle glycogen higher than normal?arrow_forwardIn sustained, moderate exercise, skeletal muscle is predominantly using ______________ as its energy source. a. amino acids b. glucagon c. fatty acids d. creatine phosphatearrow_forward
- What event causes a troponin-tropomyosin complex to regain its original shape in muscle relaxation? a. stimulation of ACh receptors b. diffusion of Na+ back into transverse tubules c. return of Ca2+ into the sarcoplasmic reticulum d. breaking of the bond with tropomyosinarrow_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_forwardcatalyzes the reaction that creates creatine phosphate in skeletal muscle A Creatine phosphatase B. Creatine kinase C. Creatinine synthase D. ATP hydrolysisarrow_forward
- when muscle fatigues, what does sarcomere look like?arrow_forwardHow would ine generate more muscle tension to pick up something heavy? Increase activation of motor units Increase muscle tone Decrease calcium release Decrease muscle hypertrophy Decrease muscle hyperplasiaarrow_forwardWhat aspect of creatine phosphate allows it to supply energy to muscles?arrow_forward
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