FREE ANATOMY AND STUDY GAMES ABOUT ANATOMY -

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FREE ANATOMY AND STUDY GAMES ABOUT ANATOMY -

MUSCULAR S EXAM QUESTIONS

Qs and Ans Expert- Explanation

This Exam contains:

-Guarantee passing score -38 Questions and Answers -format set of multiple-choice -Expert- Explanation

Question 1: Only myosin in the center

Answer:

H-Zone

Question 2: Plasma membrane of the muscle cell

Answer:

Sarcolemma

Question 3: Charge difference

Answer:

Resting Membrane Potential

Question 4: Back to resting/fast - 50 times a second

Answer:

Repolarization

Question 5: Actin- or myosin-containing structure

Answer:

Myofibril Question 6: Amount of tension increases during contraction but length of muscle does not change - muscle strength

Answer:

Isometric Question 7: When muscle remains contracted between stimuli - no relaxation phase

Answer:

Tetanus

Question 8: Contract quickly and fatigue quickly

Answer:

Fast-Twitch fibers

Question 9: Myosin anchored in - cell membrane

Answer:

M-Line

Question 10: Amount of tension is constant but length of muscle decreases

Answer:

Isotonic

Question 11: Causes cell to become permeable to sodium ions

Answer:

Depolarization

Question 12: Connective tissue surrounding a fascicle

Answer:

Perimysium

Question 13: Constant tension of muscle fibers for long periods of time

Answer:

Muscle Tone

Question 14: Axon

Answer:

Presynaptic Terminal Question 15: Single motor neuron and all of the muscle fibers it innervates, many per muscle

Answer:

Motor Unit

Question 16: A muscle Cell

Answer:

Fiber Question 17: Rapid depolarization and repolaration, results in muscle contraction

Answer:

Action Potential

Question 18: Time of Contraction

Answer:

Contraction Phase

Question 19: carry action potentials to skeletal muscle fibers

Answer:

Motor Neurons

Question 20: Connective tissue ensheathing the entire muscle

Answer:

Epimysium

Question 21: Time between application to a motor neuron and beginning of contraction

Answer:

Lag Phase

Question 22: Outside epimysium

Answer:

fascia Question 23: Contraction of an entire muscle in response to a stimulus that causes an action potential in one or more fibers

Answer:

Muscle Twitch

Question 24: Contain Acetylcholine

Answer:

Synaptic Vesicles

Question 25: Only actin, spans Z-line and ends at myosin

Answer:

I-Band Question 26: A long, filamentous organelle found within muscle cells that has a banded appearance

Answer:

Myofilament

Question 27: Thin connective tissue investing each muscle cell

Answer:

Endomysium

Question 28: Muscle fiber membrane

Answer:

Postsynaptic Membrane