Exam 2 - Muscles

Question 1

dense connective tissue that surrounds and separates muscles

Answer 1

Fascia

Question 2

connective tissue layer that covers muscle cell fibers

Answer 2

endomysium

Question 3

muscle cells also known as

Answer 3

muscle fibers

Question 4

Cell membrane of muscle fiber

Answer 4

sarcolemma

Question 5

sarcoplasmic reticulum stores

Answer 5

calcium

Question 6

small fibers that have the ability to slide over each other

Answer 6

myofibrils

Question 7

two types of myofibrils

Answer 7

thick and thin

Question 8

thick types of myofibrils have

Answer 8

myosin

Question 9

thin myofibrils have these three

Answer 9

actin, troponin and tropomyosin

Question 10

transverse tubules are part of the ____ that fold in and around other parts of the cell

Answer 10

sarcolemma

Question 11

one contractile unit of the muscle fibers are called

Answer 11

sarcomeres

Question 12

three main parts of a neuromuscular junction

Answer 12

1. motor neuron axon
2. motor end plate
3. synaptic cleft

Question 13

a motor neuron and a motor end plate meet at a ________ junction, otherwise known as a _____

Answer 13

neuromuscular; synapse

Question 14

myosin heads attach to actin at this place

Answer 14

cross-bridge

Question 15

muscle contraction happens when ____ binds to ____, causing the tissues to slide past each other and the _____ to shorten

Answer 15

myosin; actin; sarcomeres

Question 16

what neurotransmitter is released from the axon?

Answer 16

acetylcholine

Question 17

how does acetylcholine get across synaptic cleft?

Answer 17

calcium channel opens in neuron, influx of calcium releases ACl from dock to go across river

Question 18

Actin is normally covered by _____, but once _____ has bonded with ____, it will move it out of the way

Answer 18

tropomyosin; troponin; calcium

Question 19

The calcium that bonds with troponin in muscle contraction comes from the

Answer 19

sarcoplasmic reticulum

Question 20

What three things need to happen for muscles to relax

Answer 20

1. Calcium returns to SR through active transport
2. Acetylcholinesterase breaks down acetylcholine
3. ATP breaks linkage between actin and myosin

Question 21

In muscle release, ________ decomposes acetylcholine

Answer 21

acetylcholinesterase

Question 22

_____ breaks down the links between actin and myosin by binding to myosin heads

Answer 22

ATP

Question 23

This stimulates the sarcolemma, travels to the sarcoplasmic reticulum, and causes the SR to release calcium

Answer 23

Electric impulse (action potential)

Question 24

what are the three parts of the epicranius muscle?

Answer 24

aponeurosis; frontalis; occipitalis

Question 25

epicranius aponeurosis

Answer 25

Question 26

epicranius occipitalis

Answer 26

Question 27

epicranius frontalis

Answer 27

Question 28

Orbicularis oculi

Answer 28

Question 29

Orbicularis oris

Answer 29

Question 30

platysma

Answer 30

Question 31

masseter muscle

Answer 31

Question 32

SCM - sternocleidomastoid

Answer 32

Question 33

temporalis

Answer 33

Question 34

shoulder muscle

Answer 34

deltoid

Question 35

Pectoralis major

Answer 35

Question 36

Rectus abdominis

Answer 36

Question 37

Ab muscles

Answer 37

rectus abdominus

Question 38

External abdominal oblique

Answer 38

Question 39

External intercostals

Answer 39

Question 40

Internal intercostals

Answer 40

Question 41

Trapezius

Answer 41

Question 42

Rhomboid

Answer 42

Question 43

Teres minor

Answer 43

Question 44

Teres major

Answer 44

Question 45

Latissmus dorsi

Answer 45

Question 46

Subscapularis

Answer 46

Question 47

Bicep brachii

Answer 47

Question 48

Coracobrachialis

Answer 48

Question 49

Tricep brachii

Answer 49

Question 50

Brachialis

Answer 50

Question 51

Brachioradialis

Answer 51

Question 52

Pronator teres

Answer 52

Question 53

which arm muscle is on the same plane as the thumb?

Answer 53

Brachioradialis

Question 54

Supraspinatus

Answer 54

Question 55

Infraspinatus

Answer 55

Question 56

what are the four muscles of the quadriceps

Answer 56

Vastus lateralis, Rectus femoris, vastus intermedius, Vastus medialis

Question 57

Vastus lateralis

Answer 57

Question 58

Rectus femoris

Answer 58

Question 59

vastus intermedius

Answer 59

Question 60

Vastus medialis

Answer 60

Question 61

Sartorius

Answer 61

Question 62

what are the three hamstring muscles?

Answer 62

Biceps femoris Semitendinosus Semimembranosus

Question 63

Biceps femoris

Answer 63

Question 64

Semitendinosus

Answer 64

Question 65

Semimembranosus

Answer 65

Question 66

gluteus medias

Answer 66

Question 67

what are the two calf muscles

Answer 67

gastrocnemius soleus

Question 68

Gastrocnemius

Answer 68

Medial side

Question 69

Soleus

Answer 69

Lateral

Question 70

Tibialis anterior muscle

Answer 70