Free Printable Module 8

1.

(responsiveness or irritability) ability to receive and respond to stimuli

a)

Excitability

b)

Contractility

c)

Extensibility

d)

Elasticity

2.

ability to shorten when stimulated

a)

Excitability

b)

Contractility

c)

Extensibility

d)

Elasticity

3.

ability to be stretched

a)

Excitability

b)

Contractility

c)

Extensibility

d)

Elasticity

4.

ability to recoil to resting length

a)

Excitability

b)

Contractility

c)

Extensibility

d)

Elasticity

5.

dense regular connective tissue surrounding entire muscle

a)

Epimysium

b)

Perimysium

c)

Endomysium

6.

fibrous connective tissue surrounding fascicles groups of muscle fibers (cell)

a)

Epimysium

b)

Perimysium

c)

Endomysium

7.

fine areolar connective tissue surrounding each muscle fiber (cell)

a)

Epimysium

b)

Perimysium

c)

Endomysium

8.

run the entire length of an A band

a)

Thick (myosin) filaments

b)

Thin (actin) filaments

c)

Z disc

d)

H zone

e)

M line

9.

run the length of the I band and partway into the Aband

a)

Thick (myosin) filaments

b)

Thin (actin) filaments

c)

Z disc

d)

H zone

e)

M line

10.

coin-shaped sheet of proteins that anchors the thin filaments andconnects myofibrils to one another

a)

Thick (myosin) filaments

b)

Thin (actin) filaments

c)

Z disc

d)

H zone

e)

M line

11.

lighter midregion where filaments do not overlap

a)

Thick (myosin) filaments

b)

Thin (actin) filaments

c)

Z disc

d)

H zone

e)

M line

12.

line of protein myomesin that holds adjacent thick filaments together

a)

Thick (myosin) filaments

b)

Thin (actin) filaments

c)

Z disc

d)

H zone

e)

M line

13.

basic functional unit of muscle fiber

(a)

14.

elastic chains of amino acids; make muscles extensible and elastic

a)

A-band

b)

I-bands

c)

Titin filaments

d)

Myosin tails

15.

Attached to bone or (some facial muscles) to skin

a)

Skeletal

b)

Cardiac

c)

Smooth

16.

Single, very long, cylindrical, multinucleuated cells

a)

Skeletal

b)

Cardiac

c)

Smooth

17.

Walls of heart

a)

Skeletal

b)

Cardiac

c)

Smooth

18.

Branching chains of cells ; uni- or bi-nucleate; striations

a)

Skeletal

b)

Cardiac

c)

Smooth

19.

Single wall muscle in walls of hollow-visceral organs (other than the heart)

a)

Skeletal

b)

Cardiac

c)

Smooth

20.

Single, fusiform, uninucleate ; no striations

a)

Skeletal

b)

Cardiac

c)

Smooth

21.

muscle does not have time to completely relax between stimuli

a)

Increase frequency of stimulus

b)

Ca2+ release stimulates further contraction

c)

Further increase in stimulus frequency

22.

temporal (wave) summation

a)

Increase frequency of stimulus

b)

Ca2+ release stimulates further contraction

c)

Further increase in stimulus frequency

23.

unfused (incomplete) tetanus

a)

Increase frequency of stimulus

b)

Ca2+ release stimulates further contraction

c)

Further increase in stimulus frequency

24.

the muscle shortens and performs work

a)

Concentric contractions

b)

Eccentric (stretch) contractions

c)

Isotonic contraction

d)

Isometric contractions

25.

the muscle contracts as it lengthens

a)

Concentric contractions

b)

Eccentric (stretch) contractions

c)

Isotonic contraction

d)

Isometric contractions

26.

Muscle changes in length and moves the load

a)

Concentric contractions

b)

Eccentric (stretch) contractions

c)

Isotonic contraction

d)

Isometric contractions

27.

The load is greater than the tension the muscle is able to develop

a)

Concentric contractions

b)

Eccentric (stretch) contractions

c)

Isotonic contraction

d)

Isometric contractions

28.

contract slowly, have slow acting myosin ATPases, and are fatigue resistant

a)

Slow oxidative fibers

b)

Fast oxidative fibers

c)

Fast glycolytic fibers

29.

contract quickly, have fast myosin ATPases, and have moderate resistance to fatigue

a)

Slow oxidative fibers

b)

Fast oxidative fibers

c)

Fast glycolytic fibers

30.

contract quickly, have fast myosin ATPases, and are easily fatigued

a)

Slow oxidative fibers

b)

Fast oxidative fibers

c)

Fast glycolytic fibers

31.

control fine movements (fingers, eyes)

a)

Small motor units

b)

Large motor units

32.

large weight-bearing muscles (thighs, hips)

a)

Small motor units

b)

Large motor units

33.

First step in skeletal muscle contraction

a)

A thought in the brain results in a impulse traveling down a nerve to a muscle

b)

At the neural motor end plate, the impulse causes calcium to enter the nerve

c)

Calcium results in exocytosis of the neurotransmitter Acetylcholine(Ach) from the end plate into the neuromuscular synapse

d)

Acetylcholine binds to the Sodium channels on the sarcolemma of the muscle

34.

Second step in skeletal muscle contraction

a)

A thought in the brain results in a impulse traveling down a nerve to a muscle

b)

At the neural motor end plate, the impulse causes calcium to enter the nerve

c)

Calcium results in exocytosis of the neurotransmitter Acetylcholine(Ach) from the end plate into the neuromuscular synapse

d)

Acetylcholine binds to the Sodium channels on the sarcolemma of the muscle

35.

Third step in skeletal muscle contraction

a)

A thought in the brain results in a impulse traveling down a nerve to a muscle

b)

At the neural motor end plate, the impulse causes calcium to enter the nerve

c)

Calcium results in exocytosis of the neurotransmitter Acetylcholine(Ach) from the end plate into the neuromuscular synapse

d)

Acetylcholine binds to the Sodium channels on the sarcolemma of the muscle

36.

Fourth step in skeletal muscle contraction

a)

A thought in the brain results in a impulse traveling down a nerve to a muscle

b)

At the neural motor end plate, the impulse causes calcium to enter the nerve

c)

Calcium results in exocytosis of the neurotransmitter Acetylcholine(Ach) from the end plate into the neuromuscular synapse

d)

Acetylcholine binds to the Sodium channels on the sarcolemma of the muscle

37.

Fifth step in skeletal muscle contraction

a)

Acetylcholine binding to the sodium channel receptor opens the channel allowing Sodium(+) to diffuse into the muscle thereby reversing the membrane electrical potential from positive on the outside and negative on the inside of the sarcolemma to positive on the inside and negative on the outside

b)

At the neural motor end plate, the impulse causes calcium to enter the nerve

c)

Calcium results in exocytosis of the neurotransmitter Acetylcholine(Ach) from the end plate into the neuromuscular synapse

d)

Acetylcholine binds to the Sodium channels on the sarcolemma of the muscle

38.

Sixth step in skeletal muscle contraction

a)

Acetylcholine binding to the sodium channel receptor opens the channel allowing Sodium(+) to diffuse into the muscle thereby reversing the membrane electrical potential from positive on the outside and negative on the inside of the sarcolemma to positive on the inside and negative on the outside

b)

This membrane potential reversal results in a action potential (impulse) that travels along the sarcolemma until it reaches a T-tubule where it proceeds down

c)

Calcium results in exocytosis of the neurotransmitter Acetylcholine(Ach) from the end plate into the neuromuscular synapse

d)

Acetylcholine binds to the Sodium channels on the sarcolemma of the muscle

39.

Seventh step in skeletal muscle contraction

a)

Acetylcholine binding to the sodium channel receptor opens the channel allowing Sodium(+) to diffuse into the muscle thereby reversing the membrane electrical potential from positive on the outside and negative on the inside of the sarcolemma to positive on the inside and negative on the outside

b)

This membrane potential reversal results in a action potential (impulse) that travels along the sarcolemma until it reaches a T-tubule where it proceeds down

c)

The impulse stimulates electrical sensitive gaited voltage sensors to open the doors of the terminal cisternae of the sarcoplasmic reticulum and thereby releasing Calcium onto the sarcomere of the muscle

d)

Acetylcholine binds to the Sodium channels on the sarcolemma of the muscle

40.

Eighth step in skeletal muscle contraction

a)

Acetylcholine binding to the sodium channel receptor opens the channel allowing Sodium(+) to diffuse into the muscle thereby reversing the membrane electrical potential from positive on the outside and negative on the inside of the sarcolemma to positive on the inside and negative on the outside

b)

This membrane potential reversal results in a action potential (impulse) that travels along the sarcolemma until it reaches a T-tubule where it proceeds down

c)

The impulse stimulates electrical sensitive gaited voltage sensors to open the doors of the terminal cisternae of the sarcoplasmic reticulum and thereby releasing Calcium onto the sarcomere of the muscle

d)

Calcium then binds with the troponin complexes whichresults in tropomyosin being pulled off the myosin bindingsites of G-actin

41.

Ninth step in skeletal muscle contraction

a)

The Myosin heads containing ATP then bind to G-actin

b)

This membrane potential reversal results in a action potential (impulse) that travels along the sarcolemma until it reaches a T-tubule where it proceeds down

c)

The impulse stimulates electrical sensitive gaited voltage sensors to open the doors of the terminal cisternae of the sarcoplasmic reticulum and thereby releasing Calcium onto the sarcomere of the muscle

d)

Calcium then binds with the troponin complexes whichresults in tropomyosin being pulled off the myosin bindingsites of G-actin

42.

Tenth step in skeletal muscle contraction

a)

The Myosin heads containing ATP then bind to G-actin

b)

ATP is then broken into ADP thereby causing the myosin head-Gactin to be putin a cocked position. When ADP and the P are released from the myosin head, theenergy causes the myosin head to pull the actin filament to the center of thesarcomere and results in a contraction

c)

The impulse stimulates electrical sensitive gaited voltage sensors to open the doors of the terminal cisternae of the sarcoplasmic reticulum and thereby releasing Calcium onto the sarcomere of the muscle

d)

Calcium then binds with the troponin complexes whichresults in tropomyosin being pulled off the myosin bindingsites of G-actin

43.

Eleventh step in skeletal muscle contraction

a)

The Myosin heads containing ATP then bind to G-actin

b)

ATP is then broken into ADP thereby causing the myosin head-Gactin to be putin a cocked position. When ADP and the P are released from the myosin head, theenergy causes the myosin head to pull the actin filament to the center of thesarcomere and results in a contraction

c)

A second ATP attaches to the myosin head and separates it from G-actin and calcium is released from troponin and tropomyosin slides back over G-actin releasing the myosin head from the G-actin and covering the binding site. This results in a relaxation

d)

Calcium then binds with the troponin complexes whichresults in tropomyosin being pulled off the myosin bindingsites of G-actin

44.

twelfth step in skeletal muscle contraction

a)

The Myosin heads containing ATP then bind to G-actin

b)

ATP is then broken into ADP thereby causing the myosin head-Gactin to be putin a cocked position. When ADP and the P are released from the myosin head, theenergy causes the myosin head to pull the actin filament to the center of thesarcomere and results in a contraction

c)

A second ATP attaches to the myosin head and separates it from G-actin and calcium is released from troponin and tropomyosin slides back over G-actin releasing the myosin head from the G-actin and covering the binding site. This results in a relaxation

d)

This whole process of skeletal muscle contraction is called the sliding scale model

45.

What is a thick filament?

a)

Myosin

b)

Actin

46.

What is a thin filament?

a)

Myosin

b)

Actin

47.

a)

Myosin

b)

Acin

c)

I band

d)

H band

48.

a)

Myosin

b)

Acin

c)

I band

d)

H band

49.

a)

A band

b)

Z-disk

c)

I band

d)

H zone

50.

a)

A band

b)

Z-disk

c)

I band

d)

H zone

51.

a)

A band

b)

Z-disk

c)

I band

d)

H zone

52.

a)

A band

b)

Z-disk

c)

I band

d)

H zone

Module 8

Total questions: 52

Worksheet time: 27mins

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