1 what are the three types of muscles found in the muscular system
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1. What are the three types of muscles found in the muscular system. A. Skeletal, cardiac, muscle fibers B. Skeletal, cardiac, smooth C. Skeletal, smooth, connective D. Smooth, cardiac, connective. 2. The contraction of a muscle is due to the movement of. A. Skeletal muscle

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1. What are the three types of muscles found in the muscular system

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1 what are the three types of muscles found in the muscular system

1. What are the three types of muscles found in the muscular system

  • A. Skeletal, cardiac, muscle fibers

  • B. Skeletal, cardiac, smooth

  • C. Skeletal, smooth, connective

  • D. Smooth, cardiac, connective


2 the contraction of a muscle is due to the movement of

2. The contraction of a muscle is due to the movement of

  • A. Skeletal muscle

  • B. Muscle fibers

  • C. Myofibrils

  • D. sarcolemma


3 striated multi nucleated cells belong to

3. Striated, multi-nucleated cells belong to

  • A. Skeletal muscle

  • B. Cardiac muscle

  • C. Smooth muscle

  • D. Connective tissue


5 all muscles are involved in

5. All muscles are involved in

  • A. Movement

  • B. Digestion

  • C. Posture

  • D. support


7 muscle cells are surrounded and bundled by

7. Muscle cells are surrounded and bundled by

  • A. Tendons

  • B. Muscle fibers

  • C. Ligaments

  • D. Connective tissue


8 the prefix that is used when referring to muscle structure

8. The prefix that is used when referring to muscle structure

  • A. Myo, mys

  • B. Mys, endo

  • C. Epi, endo

  • D. Myo, peri


9 all of the following are functions of skeletal muscles except

9. All of the following are functions of skeletal muscles EXCEPT

  • A. Posture

  • B. Heat generation

  • C. Movement

  • D. physique


10 the connective tissue that wraps and protects each individual muscle fiber

10. The connective tissue that wraps and protects each individual muscle fiber

  • A. Epimysium

  • B. Perimysium

  • C. Endomysium

  • D. fascia


11 the connective tissue that surround and protects the fascicle

11. The connective tissue that surround and protects the fascicle

  • A. Epimysium

  • B. Perimysium

  • C. Endomysium

  • D. fascia


12 another name for muscle fiber is

12. Another name for muscle fiber is

  • A. Sarcolemma

  • B. Sarcomere

  • C. Muscle cell

  • D. Myofibril


13 the is the plasma membrane of the muscle fiber

13. The _____________ is the plasma membrane of the muscle fiber

  • A. Sarcolemma

  • B. Sarcomere

  • C. Sarcoplasmic reticulum

  • D. Myosin filament


14 this organelle is responsible for the shortening of the muscle during contraction

14. This organelle is responsible for the shortening of the muscle during contraction

  • A. Sarcolemma

  • B. Sarcomere

  • C. Sarcoplasmic reticulum

  • D. Myofibril


15 thick filaments are composed of the protein

15. Thick filaments are composed of the protein

  • A. Actin

  • B. Myosin

  • C. Insulin

  • D. Leucine


16 the thin filaments are anchored to the sarcomere by the

16. The thin filaments are anchored to the Sarcomere by the

  • A. I band

  • B. A band

  • C. H zone

  • D. Z disc


17 one motor neuron and all the skeletal muscle cells stimulated by that neuron is called a

17. One motor neuron and all the skeletal muscle cells stimulated by that neuron is called a

  • A. Fascicle

  • B. Nerve bundle

  • C. Motor unit

  • D. Motor cell


18 the junction between the axon terminal and the muscle it is stimulating

18. The junction between the axon terminal and the muscle it is stimulating

  • A. Synaptic cleft

  • B. Neuromuscular junction

  • C. Synaptic junction

  • D. Neurotransmitter junction


19 when an action potential reaches the axon terminal are released

19. When an action potential reaches the axon terminal, ____________ are released

  • A. Neurons

  • B. Vesicles

  • C. Neurotransmitters

  • D. hormones


20 the specific neurotransmitter involved in skeletal muscle contraction is

20. The specific neurotransmitter involved in skeletal muscle contraction is

  • A. Adenosine triphosphate

  • B. Adenosine diphosphate

  • C. Deoxyribonucleic acid

  • D. Acetyl Choline


Energy for muscle contraction primarily comes from

Energy for muscle contraction primarily comes from

  • A. ATP

  • B. ADP

  • C. Ach

  • D. CP


24 during a contraction the gets shorter

24. During a contraction the __________ gets shorter

  • A. Sarcomere

  • B. Neuromuscular junction

  • C. Motor Unit

  • D. neurotransmitter


The protein actin is found on the

The protein actin is found on the

  • A. Thick filament

  • B. Myosin

  • C. Thin filament

  • D. Muscle cell


26 ca is stored and released by the

26. Caâșis stored and released by the

  • A. Sarcoplasmic reticulum

  • B. Nucleus

  • C. Sarcomere

  • D. Myofibril


27 during contraction the slide over the taking up the space of the

27. During contraction the ________ slide over the ____________, taking up the space of the ___________

  • A. Thick filaments, thin filaments, bare zone

  • B. Thin filaments, thick filaments, bare zone

  • C. Thin filaments, thick filaments, z disc

  • D. Thick filaments, thin filaments, z disc


28 the previous action is part of the

28. The previous action is part of the

  • A. Sliding filament theory

  • B. Graded response

  • C. Extensibility

  • D. contractility


29 ability to receive and respond to a stimulus

29. Ability to receive and respond to a stimulus

  • A. Excitability

  • B. Contractility

  • C. Extensibility

  • D. Elasticity


30 ability of muscle cells to shorten when an adequate stimulus is received

30. Ability of muscle cells to shorten when an adequate stimulus is received

  • A. Excitability

  • B. Contractility

  • C. Extensibility

  • D. Elasticity


31 ability of muscle cells to be stretched

31. Ability of muscle cells to be stretched

  • A. Excitability

  • B. Contractility

  • C. Extensibility

  • D. Elasticity


32 ability of muscle cells to recoil and resume resting length after stretching

32. Ability of muscle cells to recoil and resume resting length after stretching

  • A. Excitability

  • B. Contractility

  • C. Extensibility

  • D. Elasticity


Study diagram

Study diagram

  • Muscle fiber

  • Endomysium

  • Fascicle

  • Perimysium

  • epimysium


Muscle fiber diagram

Muscle fiber diagram

  • Has nucleus so it MUST be the muscle cell

    • Myofibril

    • Nucleus

    • Sarcolemma (cell membrane of muscle)


Myofibril diagram

Myofibril diagram

  • Myofibril

  • Sarcomere

  • Z disc

  • Light band (I band)

  • Dark band(A band)

  • Thick and thin filaments


Microfilaments thick and thin

Microfilaments (thick and thin)

  • Sarcomere

  • Z disc

  • Thin fimaments

  • Thick filaments


Answers

Answers

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