Biol 2120 Quiz 3 Muscle

Front 1

2 types of connections from bone to muscle:

Back 1

Tendons
Aponerosis

Front 2

cord like attachment of muscle to bone

Back 2

Tendon

Front 3

sheet like attachment of muscle to bone:

Back 3

Aponeurosis

Front 4

plasma membrane of muscle cells

Back 4

Sarcolemma

Front 5

cytoplasm of muscle fibers

Back 5

sarcoplasm

Front 6

red pigment given to skeletal muscle

Back 6

myoglobin

Front 7

special type of smooth ER in muscles

Back 7

Sarcoplasmic Reticulum

Front 8

calcium storage areas:

Back 8

Cisterns in the Sarcoplasmic reticulum

Front 9

invagination of sarcolema:

Back 9

t-tubule

Front 10

point of contact between axon ending of a motor neuron and the motor end plate

Back 10

Neuromuscular Junction

Front 11

Neurotransmitters in the synaptic vessicles:

Back 11

Acetylcholine (ACh)

Front 12

part of the sarcolemma below the axonal ending:

Back 12

Motor End Plate

Front 13

plasma membrane of axon:

Back 13

axolema

Front 14

cytoplasm of axon

Back 14

axoplasma

Front 15

Enzyme embedded in the motor end plate that degrades ACh to acetate and choline:

Back 15

Acetylcholinesterase (AChE)

Front 16

3 myofibrils:

Back 16

Thick (myosin)
Thin (actin)
Elastic (titin)

Front 17

myofibrils are organized into a series of repeating units called:

Back 17

sacromeres

Front 18

outermost portion of muscle:

Back 18

epimysium

Front 19

fascicle are surrounded by:

Back 19

perimysium

Front 20

muscle fiber is surrounded by

Back 20

endomysium

Front 21

order of muscle:

Back 21

Muscle
Fasicle
Muscle Fiber
myofibrils

Front 22

length of myosin:

Back 22

A-Band

Front 23

gap between myosine heads

Back 23

h-Zone

Front 24

gap between myosine heads on different sacromeres:

Back 24

i-Band

Front 25

bond formed when myosine heads bind to thin thin fillaments

Back 25

Rigor Bond

Front 26

enzyme embedded in mysin head:

Back 26

ATPase

Front 27

breaks rigor bond and recharges myosin heads

Back 27

ATP hydrolosis

Front 28

covers site that binds the myosin heads to actin

Back 28

Tropomyosin

Front 29

attatched to tropomyosin and when binds to calcium ions shids hte tropomyosin and exposes itself

Back 29

Troponin

Front 30

Steps for muscle contraction (9)

Back 30

1. Thought
2. ACh release (exocytosis) into cleft
3. ACh binds to ACh receptors on MEP
4. Bind casues muscle impusle
5. Calcium Ions Released from Cisterns of Sarco Retic
6. Ca+ binds to Troponin + shifts tropomyosine
7. Rigor Bond + Power Stroke
8. Myosine heads swivel ADP +Pi fall of myosine head
9. Sliding Fillaments

Front 31

Sliding filament Mechanism on
H- zone
I Band
A Band

Back 31

I band shink
h disapear
A stays the same

Front 32

what causes the breaking of rigor bond

Back 32

ATP

Front 33

Events of Relaxation:

Back 33

1. AChE in motor end place remove ACh
2. ATP breaks rigor bond- ATP is hydrolyzed to ADP + P by ATPase
3. CA+ fall off troponin and transported out of sarcoplasm

Front 34

muscle stiffen after dead known as:

Back 34

Rigor Mortis

Front 35

Autoimmune diease that destroy ACh receptors

Back 35

Myasthenia Gravis

Front 36

2 types of muscle contractions

Back 36

Isotonic
Isometric

Front 37

2 types of isotonic

Back 37

Concentric
Eccentric

Front 38

muscle shortens and do work:

Back 38

Concentric

Front 39

Muscle contracts as it lengthens:

Back 39

Eccentric

Front 40

Muscle exerts force as it contracts but does not shorten:

Back 40

Isometric

Front 41

muscle that produces most force (brachialis)

Back 41

Prime mover

Front 42

muscle that aid prime mover
(biceps brachii)

Back 42

Synergists

Front 43

Muscle that oppose the action of the primer mover
(Triceps brachii)

Back 43

Antagonists

Front 44

Bending an extended part at a joint so that the angle between them is decreased and parts come closer:
bending knee
raising forarm

Back 44

Flexion

Front 45

Straitning:

Back 45

Extension

Front 46

Moving toard midline of frontal plane:

Back 46

Adduction

Front 47

Moving away from midline in frontal plane

Back 47

Abduction

Front 48

Palm downward

Back 48

Pronation

Front 49

Palm upward

Back 49

Supination

Front 50

Ankle outward (laterally)

Back 50

eversion

Front 51

Ankle inward (medially_

Back 51

inversion

Front 52

contract calf muscle

Back 52

plantar flexion

Front 53

flex tibialis

Back 53

dosiflexion