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Bio 223A > Bio 223A In Class Quiz > Flashcards

Bio 223A In Class Quiz Flashcards

1
Q

What do we call the structural and functional unit of skeletal muscle cell?

A

Sarcomere

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2
Q

In the sarcomere what is the place that contains both actin and myosin myofilaments?

A

A band

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3
Q

What do we call a sustained muscle contraction?

A

Tetanus

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4
Q

Depolarization of the cell occurs with a rapid influx of which ion?

A

Sodium

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5
Q

What term do we use as an example of a greater response that can contribute to muscle deficiency and is achieved during warm up?

A

Treppe

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6
Q

What stores calcium ions?

A

Sarcoplasmic reticulum

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7
Q

What characteristic defines that muscle responds to
stimulation by the nervous system?

A

Excitability

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8
Q

What characteristic describes the muscle ability to
shorten?

A

Contractibility

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9
Q

What connects to two rectum abdominal muscles?

A

Línea alba

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10
Q

What is the triangular muscle on the superior part of the shoulder?

A

Deltoid

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11
Q

What is the condition of which stimulus occurs so rapidly, there are no intertwining contractions?

A

Complete tetanus

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12
Q

What do we call the invagination of sarcolemma?

A

T-tubules

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13
Q

What results in a lack of acetylcholine in the cleft?

A

Postsynaptic membrane

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14
Q

What do the synaptic vesicles in the neurovascular contain?

A

Acetylcholine

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15
Q

What do we call channels that open and close in the change of voltage in the plasma membrane?

A

Voltage gated channels

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16
Q

What is the model that describes the contraction of the muscle?

A

Sliding filament model

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17
Q

In what way are smooth muscle and cardiac muscle similar?

A

Both are involuntary

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18
Q

Which muscle type is responsible for constriction of organs?

A

Smooth muscles

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19
Q

What does the muscle extensor Hallucis longus do?

A

Extends the great toe

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20
Q

What sort of chemical is acetylcholine?

A

Neurotransmitter

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21
Q

Which muscle is involved in chewing gum?

A

Masseter and temporalis

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22
Q

Which muscle of the head wraps around the organs?

A

Orbicularis oculi

23
Q

On what basis is the trapezius muscle named?

A

Shape of muscle

24
Q

If you have a group of muscles working together what term will we use for that?

A

Synergists

25
Q

After exercise the oxygen taken in that exceeds the oxygen requirement is the?

A

Oxygen debt

26
Q

What type of muscle fatigue is the result of the emotional state of an individual?

A

Psychological fatigue

27
Q

What term do we use for the constant tension produced by muscles for long periods of time?

A

Muscle tone

28
Q

What term do we use for the constant tension produced by muscles for long periods of time?

A

Muscle tone

29
Q

What is the period during which time the tissue for muscle cannot respond to a stimulus again?

A

Refractory period

30
Q

If you give your patient a drug that interferes with active transport of calcium ions from the sarcoplasm to the Sarcoplasmic Reticulum?

A

Continuous contraction with no relaxation

31
Q

What would happen if sodium ions cant enter muscle fiber in response to a muscle stimulus?

A

Contractions can’t occur

32
Q

Acetylcholine binds to a membrane bound response causing ligand sodium channels to open, what does it result in?

A

Depolarization

33
Q

What do you call the site where a chemical substance is transmitted from the pre synaptic terminal to the postsynaptic membrane of a fiber?

A

Neuromuscular junction

34
Q

During the resting membrane potential of the cell which cell is contracted primarily inside the cell?

A

Potassium ions

35
Q

On what active sites to which cross bridge attachment is found?

A

Actin myofilaments

36
Q

What is the connective tissue that surrounds the fascicles?

A

Perimysium

37
Q

Which class level system will the flex of the elbow represent?

A

3rd class level system

38
Q

On what basis is the brachioradialis named?

A

Origin and insertion

39
Q

Which muscles hold the head of the humerus in the glenoid fossa of the scapula?

A

Rotator cuff muscles

40
Q

Name the rotator muscle?

A

supraspinatus, infraspinatus, teres minor & subscapularis (SITS)

41
Q

What type of muscle tissue has neuromuscular junctions?

A

Skeletal muscles

42
Q

What is a cross bridge?

A

Actin and myosin connect

43
Q

What are the outer boundaries of a sarcomere?

A

Z disc

44
Q

What is the longest muscle in the body?

A

Sartorius

45
Q

Which muscle is inserted in the calcaneus of the achilles tendon

A

Gastrocnemius

46
Q

What is the common site for injections?

A

Gluteus medius

47
Q

What does the extensor pollicis brevis do?

A

Thumbs

48
Q

Closing and puckering lips to kiss someone is what muscle?

A

Orbicularis oris

49
Q

If you have a well developed mentalis muscle what does that result in?

A

Dimple chin

50
Q

Muscles that have fossils that have feathers?

A

Pennate

51
Q

What is a triad?

A

2 terminal cisternae and corresponding T-tubule in middle

52
Q

Which protein has a calcium binding site?

A

Troponine

53
Q

Which type of muscle tissue is multinucleated?

A

Skeletal muscle

54
Q

Which type of muscle is causing vasal constrictions?

A

Smooth muscle

Bio 223A (15 decks)

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