Bio 223A In Class Quiz

Question 1

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

Answer 1

Sarcomere

Question 2

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

Answer 2

A band

Question 3

What do we call a sustained muscle contraction?

Answer 3

Tetanus

Question 4

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

Answer 4

Sodium

Question 5

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

Answer 5

Treppe

Question 6

What stores calcium ions?

Answer 6

Sarcoplasmic reticulum

Question 7

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

Answer 7

Excitability

Question 8

What characteristic describes the muscle ability to
shorten?

Answer 8

Contractibility

Question 9

What connects to two rectum abdominal muscles?

Answer 9

Línea alba

Question 10

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

Answer 10

Deltoid

Question 11

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

Answer 11

Complete tetanus

Question 12

What do we call the invagination of sarcolemma?

Answer 12

T-tubules

Question 13

What results in a lack of acetylcholine in the cleft?

Answer 13

Postsynaptic membrane

Question 14

What do the synaptic vesicles in the neurovascular contain?

Answer 14

Acetylcholine

Question 15

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

Answer 15

Voltage gated channels

Question 16

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

Answer 16

Sliding filament model

Question 17

In what way are smooth muscle and cardiac muscle similar?

Answer 17

Both are involuntary

Question 18

Which muscle type is responsible for constriction of organs?

Answer 18

Smooth muscles

Question 19

What does the muscle extensor Hallucis longus do?

Answer 19

Extends the great toe

Question 20

What sort of chemical is acetylcholine?

Answer 20

Neurotransmitter

Question 21

Which muscle is involved in chewing gum?

Answer 21

Masseter and temporalis

Question 22

Which muscle of the head wraps around the organs?

Answer 22

Orbicularis oculi

Question 23

On what basis is the trapezius muscle named?

Answer 23

Shape of muscle

Question 24

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

Answer 24

Synergists

Question 25

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

Answer 25

Oxygen debt

Question 26

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

Answer 26

Psychological fatigue

Question 27

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

Answer 27

Muscle tone

Question 28

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

Answer 28

Muscle tone

Question 29

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

Answer 29

Refractory period

Question 30

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

Answer 30

Continuous contraction with no relaxation

Question 31

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

Answer 31

Contractions can’t occur

Question 32

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

Answer 32

Depolarization

Question 33

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

Answer 33

Neuromuscular junction

Question 34

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

Answer 34

Potassium ions

Question 35

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

Answer 35

Actin myofilaments

Question 36

What is the connective tissue that surrounds the fascicles?

Answer 36

Perimysium

Question 37

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

Answer 37

3rd class level system

Question 38

On what basis is the brachioradialis named?

Answer 38

Origin and insertion

Question 39

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

Answer 39

Rotator cuff muscles

Question 40

Name the rotator muscle?

Answer 40

supraspinatus, infraspinatus, teres minor & subscapularis (SITS)

Question 41

What type of muscle tissue has neuromuscular junctions?

Answer 41

Skeletal muscles

Question 42

What is a cross bridge?

Answer 42

Actin and myosin connect

Question 43

What are the outer boundaries of a sarcomere?

Answer 43

Z disc

Question 44

What is the longest muscle in the body?

Answer 44

Sartorius

Question 45

Which muscle is inserted in the calcaneus of the achilles tendon

Answer 45

Gastrocnemius

Question 46

What is the common site for injections?

Answer 46

Gluteus medius

Question 47

What does the extensor pollicis brevis do?

Answer 47

Thumbs

Question 48

Closing and puckering lips to kiss someone is what muscle?

Answer 48

Orbicularis oris

Question 49

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

Answer 49

Dimple chin

Question 50

Muscles that have fossils that have feathers?

Answer 50

Pennate

Question 51

What is a triad?

Answer 51

2 terminal cisternae and corresponding T-tubule in middle

Question 52

Which protein has a calcium binding site?

Answer 52

Troponine

Question 53

Which type of muscle tissue is multinucleated?

Answer 53

Skeletal muscle

Question 54

Which type of muscle is causing vasal constrictions?

Answer 54

Smooth muscle