Question Completion Status:QUESTION 1Match the Following:ActinSarcolemma+ PerimysiumSarcomereTendon✰ Endomysium✰ EpimysiumMyosinA. Connective tissue that connects muscle to boneB. Unit of muscle contractionC. Thin FilamentD. Connective tissue that covers the entire muscleE. Cell membrane that surrounds the muscle fiberF. Connective tissue that lies between muscle fibersG. Connective tissue that lies between muscle fasciclesH. Thick filamentQUESTION 2Click Save and Submit to save and submit. Click Save All Answers to save all answers.MacBook Air

The human body's muscles are vital organs that are involved in posture, movement, stability, and…

Answered: QUESTION 1 Match the Following: Actin…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Similar questions

Muscle contractions where the muscle shortens but tension remains constant are called A. isometric B. hypermetric C. hypotonic D. isotonic E. hypertonic
Which of the following is true concerning the role of Calcium in the contraction of muscle- cells? 23. A. skeletal muscle cells require an extracellular inward-Calcium-current to stimulate the burst of Calcium from the sarcoplasmic reticulum. B. smooth muscle cells require an extracellular inward-Calcium-current to stimulate the burst of Calcium from the sarcoplasmic reticulum. C. cardiac muscle cells require an extracellular inward-Calcium-current to stimulate the An burst of Calcium from intracellular stored-Calcium-organelles. D. No type of muscle cell requires an extracellular inward-Calcium current for normal contractile-function.
QUESTION 9 Which of the following is true about skeletal, smooth and cardiac muscle? OA. They are all striated. B. They all have varicosities. C. They are all multinucleated. O D. They all have actin and myosin. W
QUESTION 8 How does the nervous system grade the force of muscle contraction? O a. Only by recruiting additional motor units O b. Only by varying the firing rate of the motor neurons O c. By varying the firing rate of the motor neurons and by recruiting additional motor units O d. By using more motor neuron pools
Describe what is happening to the following parts of a sarcomere during muscle contraction. a. H band b. I band c. A band d. Z lines
Question 2 During which step of a muscle contraction cycle is ATP needed? when myosin head does a power stroke and release of calcium ions into sarcoplasm when myosin head detaches from actin and release of calcium ions into sarcoplasm when myosin head does a power stroke and pumping of calcium ions back into SR when myosin head detaches from actin and pumping of calcium ions back into SR
which of the following statement is true? a. Fast fibers have difficulty fatiguing b. Fast fibers have large glycogen reserves c. Fast fibers containe loosely packed myofibrils d. Fast fibers have a small diameter
The structure (a specialized synapse) that allows neurons to control our skeletal muscle fibers is called the: 19. A. sarcolemma extracellular inard B. neuromuscular junction C. sarcoplasmic reticulum D. cross-bridge axiom arcople acell
A motor unit from a skeletal muscle contains 1500 muscle fibers. Would this muscle be involved in fine, delicate movements or in powerful, gross movements? Explain.
the troponin/tropomyosin complex will inhibit the crossbridges of myosin from with actin. this is true during: A. Muscle relaxation B. Muscle contraction C. Nerve stimulation D. Both a & b
Crossbridges that form during muscle contraction are a bond between: A. Myoglobin and Troponin B. Hemoglobin and Glycogen C. Actin and Myosin D. Toponin and Tropomyosin
When a muscle fiber is stretched from 60% of its optimal length to Lo, what change or changes are happening on the cellular level (MULTIPLE SELECT)? A. Increased calcium release from the SR B. Increased firing of action potentials from the alpha motor neuron C. Increased rate of myosin ATPase activity D. Increased number of actin-myosin bridges E. Increased stretch on titin, producing more passive force

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