MUSCULAR SYSTEM

Question 1

11 functions of muscular system

Answer 1

mobility
stability
posture
circulation
respiration
digestion
urination
childbirth
vision
organ protection
temperature regulation

Question 2

has large amount of movement

Answer 2

gross movement

Question 3

has small amount of movement

Answer 3

fine movement

Question 4

talking, writing, facial expressions are what kind of movement

Answer 4

fine movement

Question 5

walking, jogging, swimming are what kind of movements

Answer 5

gross movement

Question 6

main function is to allow
movement.

Answer 6

mobility

Question 7

Muscle tendons stretched over joints and contributes to muscular ________

Answer 7

Stability

Question 8

Breathing involves the use of ________ muscle.

Answer 8

diaphragm

Question 9

diaphragm contracts it pushes
________ causing the chest cavity to ________

Answer 9

downward; expand
bigger.

Question 10

The GI tract stretches from the mouth going to
the anus wherein the food moves through the
digestive system in a motion known as __________

Answer 10

peristalsis

Question 11

The urinary system combines both __________ and _________ including the bladder,
kidneys, penis and vagina.

Answer 11

smooth
muscles and skeletal muscles

Question 12

Smooth muscles in the uterus _______ and _______ during childbirth.

Answer 12

expand and
contract

Question 13

There are __________ muscles around the eye.

Answer 13

There are 6 skeletal muscles around the eye.

Question 14

_____% of the heat a person generates in
their body comes from the contracting muscles.

Answer 14

85%

Question 15

3 types of muscle tissue

Answer 15

smooth muscle
cardiac muscle
skeletal muscle

Question 16

muscles that consist of the walls of the viscera, the
blood vessels and the skin.

Answer 16

Smooth Muscles

Question 17

3 characteristics of smooth muscles

Answer 17

involuntary
autonomic
not striated

Question 18

muscles that forms the walls of the heart.

Answer 18

Cardiac Muscle

Question 19

3 characteristics of cardiac muscle

Answer 19

involuntary
autonomic
striated

Question 20

muscles that usually attached to the bones

Answer 20

Skeletal Muscle

Question 21

3 characteristics of skeletal muscle

Answer 21

voluntary
somatic
striated

Question 22

3 connective tissue coverings

Answer 22

fascia
aponeuroses
tendons

Question 23

layers of dense connective tissue that
separates skeletal muscles from adjacent muscles and hold them into the position.

Answer 23

fascia

Question 24

sheet of pearly white fibrous tissue
that takes the place of the tendon in flat muscles.

Answer 24

aponeuroses

Question 25

chord-like structures which are extensions of connective tissue surrounding each muscle that connects or attaches it to the bone.

Answer 25

tendons

Question 26

3 muscle coverings

Answer 26

epimysium perimysium endomysium

Question 27

this is the muscle covering or the connective tissue covering that surrounds the whole muscle.

Answer 27

Epimysium

Question 28

the muscle covering that surrounds or encompasses the fascicle.

Answer 28

perimysium

Question 29

inside the fascicle has a smaller unit known as muscle fibers. The muscle covering that surrounds or encompasses the muscle fibers

Answer 29

endomysium

Question 30

is the muscle cell membrane.

Answer 30

Sarcolemma

Question 31

serves as the cytoplasm of the muscle cell.

Answer 31

Sarcoplasm

Question 32

parallel thread-like structures that are found at the sarcoplasm.

Answer 32

Myofibril

Question 33

Myofibril contains two proteins:

Answer 33

Actin filament Myosin filament

Question 34

thin filament

Answer 34

Actin filament

Question 35

thick filament

Answer 35

Myosin filament

Question 36

the functional unit of a cell or the contractile unit of the cell.

Answer 36

Sarcomere

Question 37

these are networks of membranous channels that surround each myofibril.

Answer 37

Sarcoplasmic reticulum (SR)

Question 38

these are membranous channels that extend into the sarcoplasm as invagination containing extracellular fluid.

Answer 38

Triad (T tubules)

Question 39

Sarcoplasmic reticulum contains-

Answer 39

triad; 1 transverse tubules and 2 cisternae or two enlarged portions of the SR.

Question 40

these are light bands that are composed of thin actin filaments. It is closer to the Z line (border).

Answer 40

I band

Question 41

these dark bands that are composed of thick filaments in combination with thin filaments.

Answer 41

A band

Question 42

the center of the A band where only thick filaments are present.

Answer 42

H zone

Question 43

a disk made up of protein alpha actin that anchors the thin actin filaments. Acts as a boundary between the sarcomere.

Answer 43

Z line

Question 44

the functional unit of the striated muscle.

Answer 44

Sarcomere

Question 45

Composed of myosin proteins Form the cross-bridges

Answer 45

Thick myofilaments

Question 46

Composed of actin proteins Associated with troponin and tropomyosin proteins.

Answer 46

Thin myofilaments

Question 47

Contraction results from a movement within the __________ in which the actin and myosin filaments slide past one another, shortening the _________.

Answer 47

myofibrils; sarcomere

Question 48

Also known as myoneural junction

Answer 48

neuromuscular junction

Question 49

Site where an axon and muscle fiber meet

Answer 49

neuromuscular junction

Question 50

parts of neuromuscular junction

Answer 50

Motor neuron Motor end plate Synaptic cleft Synaptic vesicles Neurotransmitters

Question 51

toxin that binds to each vesicle resulting in paralyzation of the entire vesicles.

Answer 51

botulinum toxin aka botox

Question 52

It moves the vesicle towards the periphery of the axon terminal. It binds with the nicotinic acetylcholine receptor preventing the sodium to enter the muscle fiber or motor neurons. -no muscle contraction -snake venom and curare.

Answer 52

Bungarotoxin

Question 53

local anesthesia. The vesicles can move towards the periphery of the axon terminal and are capable of releasing the acetylcholine.

Answer 53

Procaine, lidocaine, benzocaine

Question 54

Procaine and lidocaine once the sodium gated channel opens, it blocks the NAR causing ________

Answer 54

flaccid paralysis.

Question 55

toxin that prevent the acetylcholinesterase to bind with acetylcholine causing the gates to be open all the time.

Answer 55

Some pesticides

Question 56

some pesticides causes the sodium gated channel to always open causing constant contraction leading to __________

Answer 56

spastic paralysis.

Question 57

immovable end

Answer 57

origin

Question 58

movable end

Answer 58

Insertion

Question 59

prime mover/doing the movement

Answer 59

agonist

Question 60

reverses a movement

Answer 60

antagonist

Question 61

aids the prime mover/unnecessary movements

Answer 61

synergist

Question 62

specialized synergist

Answer 62

fixator

Question 63

these can’t really hide your true and inner feelings by involuntary movement of the facial muscles.

Answer 63

microexpressions

Question 64

facial muscle of surprised expression

Answer 64

epicranius

Question 65

facial muscle of extreme frowning

Answer 65

platysma

Question 66

facial muscle of closing the eyes

Answer 66

orbicularis oculi

Question 67

facial muscle of kissing muscle

Answer 67

orbicularis oris

Question 68

facial muscle of smiling

Answer 68

zygomaticus major

Question 69

facial muscle of sad

Answer 69

zygomaticus minor

Question 70

facial muscle of sneering

Answer 70

levator labii superioris

Question 71

facial muscle of blowing and sucking

Answer 71

buccinator

Question 72

facial muscle of insincere smile

Answer 72

risorius