Muscle test

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1

Which of the following is NOT a type of muscle found in the body?

A) skeletal

B) smooth

C) myelinated

D) cardiac

C

2

Fascia

A) Broad fibrous sheets attached to other muscles

B) Dense connective tissue surrounding/separating muscle

C) Connected to the periosteum of the bones

D) Layer of connective tissue around each whole muscle

B

3

Tendon

A) Broad fibrous sheets attached to other muscles

B) Dense connective tissue surrounding/separating muscle

C) Connected to the periosteum of the bones

D) Layer of connective tissue around each whole muscle

C

4

Aponeuroses

A) Broad fibrous sheets attached to other muscles

B) Dense connective tissue surrounding/separating muscle

C) Connected to the periosteum of the bones

D) Layer of connective tissue around each whole muscle

A

5

epimysium

A) Broad fibrous sheets attached to other muscles

B) Dense connective tissue surrounding/separating muscle

C) Connected to the periosteum of the bones

D) Layer of connective tissue around each whole muscle

D

6

Which of the following is TRUE?

A) Each muscle fiber consists of multiple, elongated muscle cells with rounded ends.

B) Each muscle fiber is a single, long, cylindrical muscle cell with rounded ends.

C) Each muscle fiber consists of multiple, short muscle cells with branched ends.

D) Each muscle fiber is a single, long, cylindrical muscle cell with branched ends.

B

7

Thick filaments of myofibrils are made up of

A) the protein myosin

B) the protein actin

C) I bands

D) A bands

A

8

Thin filaments of myofibrils are made up of

A) the protein myosin

B) the protein actin

C) I bands

D) A bands

B

9

The organization of thick and thin filaments produces

A) cisternae

B) aponeuroses

C) striations

D) sarcolema

C

10

Sarcomere

A) Center of A-Bands, consists of myosin filaments only.

B) Dark bands made up of overlapping thick & thin filaments.

C)Light bands made up of actin filaments, anchored to Z lines.

D)Extends from Z-line to Z-line.

D

11

I Bands

A) Center of A-Bands, consists of myosin filaments only.

B) Dark bands made up of overlapping thick & thin filaments.

C)Light bands made up of actin filaments, anchored to Z lines.

D)Extends from Z-line to Z-line.

C

12

A Bands

A) Center of A-Bands, consists of myosin filaments only.

B) Dark bands made up of overlapping thick & thin filaments.

C)Light bands made up of actin filaments, anchored to Z lines.

D)Extends from Z-line to Z-line.

B

13

H Zone

A) Center of A-Bands, consists of myosin filaments only.

B) Dark bands made up of overlapping thick & thin filaments.

C)Light bands made up of actin filaments, anchored to Z lines.

D)Extends from Z-line to Z-line.

A

14

Beneath the sarcolemma of a muscle fiber lies the (XXXXX), a network of membranous channels around each myofibril, which is associated with transverse tubules

A) sarcomere

B) sarcoplasmic reticulum

C) cisternae

D) synapse

B

15

Which of the following IS correct?

A) The sarcoplasmic reticulum and transverse tubules begin muscle relaxation when the fiber is stimulated.

B) The length of the sarcomere lengthens, causing contraction

C) The sarcoplasmic reticulum and transverse tubules activate muscle contraction when the fiber is stimulated.

D) The length of the sarcomere shortens, causing relaxation.

C

16

The site where the motor neuron and muscle fiber meet is the neuromuscular junction.

A) true

B) false

A

17

The muscle fiber membrane forms a motor end plate in which the sarcolemma are tightly folded and where nuclei and mitochondria are scarce.

A) true

B) false

B

18

Neurotransmitters are stored within the synaptic clefts.

A) true

B) false

B

19

Shortening of sarcomeres and pulling of the muscle against its attachments results in

A) muscle relaxation

B) muscle contraction

C) tendonitis

D) headache

B

20

Globular protein with myosin binding sites

A) Myosin

B) Actin

C) Tropomysosin

D) Troponin

B

21

Two twisted protein strands with globular protein parts called cross-bridges.

A) Myosin

B) Actin

C) Tropomysosin

D) Troponin

A

22

According to sliding filament theory, which element is necessary for myosin crossbridge attachment to the actin filament.

A) Sodium

B) Chloride

C) Calcium

D) Potassium

C

23

A motor neuron and the many muscle fibers it controls make up

A) muscle

B) nerve

C) motor unit

D) none of the above

C

24

Which neurotransmitter is essential to initiate muscle contraction?

A) Acetylcholine

B) Acetylcholinesterase

C) Calcium

D) ATP

A

25

After stimulation by neurotransmitters, a muscle impulse spreads over the sarcolemma. Upon receipt of the impulse, the cisternae of the sarcoplasmic reticulum releases its stored (XXXXX) to the sarcoplasm of the muscle fiber.

A) Acetylcholine

B) Acetylcholinesterase

C) Calcium

D) ATP

C

26

An agent that inhibits acetylcholinesterase will (XXXXX) muscle activity.

A) Increase

B) Decrease

A

27

Energy for muscle contraction comes from

A) АТР

B) ADP

C) Creatine phosphate

D) Creatine phosphokinase

A

28

(XXXXX) stores excess energy released by the mitochondria and is present to regenerate ATP from ADP and phosphate.

A) Acetylcholine

B) Acetylcholinesterase

C) Creatine phosphate

D) Creatine phosphokinase

C

29

Muscles have a high requirement of oxygen.

A) True

B) False

A

30

(XXXXX) on red blood cells carries oxygen to body

A) Myoglobin

B) Myosin

C) Haptoglobin

D) Hemoglobin

D

31

Oxygen deficiency and lactic acid accumulation is a result of

A) aerobic respiration

B) anaerobic respiration

C) glucose conversion to pyruvic acid

D) the citric acid cycle

B

32

Which of the following is NOT correct?

A) During rest, there is enough oxygen to support aerobic respiration

B) The amount of oxygen that liver cells require to convert accumulated lactose acid into glucose, plus the amount that muscle cells need to resynthesize ATP and creatine phosphate to their original concentrations, is oxygen debt.

C) Lactic acid diffuses out of muscle cells and is carried in the bloodstream to the liver.

D) Repaying oxygen dept occurs quickly, over the course of a few minutes.

D

33

Muscle fatigue usually arises from the accumulation of (XXXXX) in the muscles.

A) Pyruvic acid

B) Lactic acid

C) Calcium

D) Oxygen

B

34

A muscle cramp occurs is to a lack of (XXXXX) which is necessary to return calcium ions back to the sarcoplasmic reticulum so muscle fibers can relax.

A) Oxygen

B) Lactic acid

C) ATP

D) ADP

C

35

Minimal strength of a stimulus to cause a fiber to contract is the

A) All-or-none response

B) Latent period

C) Summation

D) Threshold stimulus

D

36

A recording of an electrically stimulated muscle contraction is a

A) myoma

B) myogram

C) myography

D) myositis

B

37

After stimulus, what is the appropriate order for the following periods

A) latent period, relaxation period, contraction period.

B) relaxation period, contraction period, latent period.

C) latent period, contraction period, relaxation period.

D) contraction period, relaxation period, latent period.

C

38

Sustained muscular contraction lacking any relaxation is

A) tetany

B) atrophy

C) dystrophy

D) summation

A

39

Which of the following is NOT correct

A) a whole muscle is made of a single motor unit. Strength of contracture depends on strength of stimulus

B) a whole muscle is made of many units, each responding to different thresholds

C) muscle tone is achieved by a continuous of sustained contraction of motor unit within a muscle

D) muscle tone is lost with loss of consciousness

A

40

In muscle hypotrophy, the number oof muscle fibers increases, not in size

A) true

B) False

B

41

Muscle atrophy is a decrease in size of a muscle, frequently non use

A) True

B) False

A

42

Which of the following is not a characteristic of smooth muscle

A) elognated with tapered ends

B) lack of striations

C) highly developed sarcoplasmic reticulum

D) found in the walls of hollow organs

C

43

Blood Vessel

A) Multiunit smooth

B) visceral smooth muscle

A

44

Intestine

A) Multiunit smooth

B) visceral smooth muscle

B

45

Separate fibers

A) Multiunit smooth

B) visceral smooth muscle

A

46

Fibrous sheets

A) Multiunit smooth

B) visceral smooth muscle

B

47

Iris

A) Multiunit smooth

B) visceral smooth muscle

A

48

Bladder

A) Multiunit smooth

B) visceral smooth muscle

B

49

what two neurotransmitters can stimulate or inhibit smooth muscle contractions

a.) epinephrine/norepinephrine

b) acetylcholine/ norepinephrine

c.) calcium/sodium

d.) ATP/ creatine phosphate

B

50

Smooth muscle is faster to contract than skeletal muscle

A) True

B) False

B

51

Hormones can stimulate or inhibit contraction of smooth muscle

A) True

B) False

A

52

Which of the following is NOT correct

A) cardiac muscle has transverse tubules that supply extra calcium, and can thus contract for longer periods

B) complex membrane junction join cells and transmit the force of the contraction from one cell to the next

C) cardiac muscle is primarily composed of multiunut smooth muscles

D) cardiac muscle is self exciting and rhythmic

C

53

I. The immoveable end of a muscle is the origin

II. The moveable end of a muscle is the insertion

III. Some muscles have more than one insertion or origin

IV. Of a muscle group, the one doing most of the work is the synergist

A) I & III

B) II & IV

C) I, II, III

D) IV

E) All are true

C

54

Myasthenia gravis is an autoimmune disorder characterized by the partial destruction of acetylcholine receptors, leading to profound muscle weakness. WHich of the following would be a logical treatment to enhance muscle tone

a.) Calcium channel blockers

b.) acetylcholine inhibitor

c.) oxygen

B

55
card image

What is 55 pointing to

A) Z line

B) sarcomere

C) Myosin filament

D) A band

E) I band

B

56
card image

What is 56 pointing to

A) Z line

B) sarcomere

C) Myosin filament

D) A band

E) I band

D

57
card image

What is 57 pointing to

A) Z line

B) sarcomere

C) Myosin filament

D) A band

E) I band

E

58
card image

What is 58 pointing to

A) Z line

B) sarcomere

C) Myosin filament

D) A band

E) I band

C

59
card image

What is 59 pointing to

A) Z line

B) sarcomere

C) Myosin filament

D) A band

E) I band

A

60
card image

What is 60 pointing to

A) Deltoid

B) Tricep brachii

C) Frontalis

D) Orbicular oris

E) None of the above

C

61
card image

What is 61 pointing to

A) Deltoid

B) Tricep brachii

C) Frontalis

D) Orbicular oris

E) None of the above

D

62
card image

What is 62 pointing to

A) Deltoid

B) Tricep brachii

C) Frontalis

D) Orbicular oris

E) None of the above

A

63
card image

What is 63 pointing to

A) Deltoid

B) Tricep brachii

C) Frontalis

D) Orbicular oris

E) None of the above

B

64
card image

What is 64 pointing to

A) Gluteus Maximus

B) Latissimus dorsi

C) External oblique

D) Occipitalus

E) None of the above

D

65
card image

What is 65 pointing to

A) Gluteus Maximus

B) Latissimus dorsi

C) External oblique

D) Occipitalus

E) None of the above

B

66
card image

What is 66 pointing to

A) Gluteus Maximus

B) Latissimus dorsi

C) External oblique

D) Occipitalus

E) None of the above

C

67
card image

What is 67 pointing to

A) Gluteus Maximus

B) Latissimus dorsi

C) External oblique

D) Occipitalus

E) None of the above

A

68
card image

What is 68 pointing to

A) Biceps femoris

B) Abductor magnus

C) Iliotibial tract (Tendon)

D) Gastrocnemius

E) None of the above

C

69
card image

What is 69 pointing to

A) Biceps femoris

B) Abductor magnus

C) Iliotibial tract (Tendon)

D) Gastrocnemius

E) None of the above

B

70
card image

What is 70 pointing to

A) Biceps femoris

B) Abductor magnus

C) Iliotibial tract (Tendon)

D) Gastrocnemius

E) None of the above

A

71

essay:

Pick A

The sequence of events that results in a muscle contraction begins with a signal-the neurotransmitter, Acetylcholine. The local membrane of that fiber will depolarize as positively charged sodium ion (Na2++) enter. This triggers an action potential that spreads to the rest of the membrane will depolarize, including the transverse tubules. This triggers the release of calcium ions from the cisternae of the sarcoplasmic reticulum. The calcium initiates the contraction, which is sustained by ATP. Muscle contractions usually stop when the signaling from the motor neuron ends, which repolarizes the sarcolemma and T-Tubules.

A