Muscle System

Question 0

Characteristics of muscle tissue

Answer 0

Contractibility, extensibility, elasticity, excitability

Question 1

Functions of the muscular system

Answer 1

Movement, thermogenesis, posture support, organ volume, protects organs

Question 2

Types of muscle tissue

Answer 2

Smooth, cardiac, skeletal

Question 3

Connective tissue covering that seperate a muscles, and becomes the tendon

Answer 3

Fascia

Question 4

Connective tissue under the fascia, goad all around a skeletal muscle

Answer 4

Epimysium

Question 5

Connective tissue that extends inward from epimysium and surrounds fasciculi

Answer 5

Perimysium

Question 6

Connective tissue that surrounds each muscle fiber

Answer 6

Endomysium

Question 7

Compartments of bundles of muscle fibers

Answer 7

Fasciculi

Question 8

Muscle cell

Answer 8

Muscle fiber

Question 9

Contractile fibers within the muscle fiber

Answer 9

Myofibrils

Question 10

Thick myofilaments, overlaps free ends of actin, shaped like a golf club

Answer 10

Myosin

Question 11

Thin myofilaments, anchored to Z lines, two stranded protein intertwined

Answer 11

Actin

Question 12

Unit containing myosin and actin within a myofibril

Answer 12

Sarcomere

Question 13

Nerve that carries message from the brain- stimulates muscles

Answer 13

Motor neuron

Question 14

End of axon terminal where it attaches to muscle fiber

Answer 14

Neuromuscular junction

Question 15

Location on the muscle fiber at end of axon terminal

Answer 15

Motor end plate

Question 16

Released from nerve, activates muscle to move

Answer 16

Acetylcholine (neurotransmitter)

Question 17

Has most mass, more proximal, no movement

Answer 17

Origin

Question 18

More distal, movable

Answer 18

Insertion

Question 19

Muscle responsible for majority of force

Answer 19

Agonists

Question 20

Performs opposite movement

Answer 20

Antagonist

Question 21

Muscle that assists the agonists

Answer 21

Synergist

Question 22

Stabilizes a body segment

Answer 22

Fixators

Question 23

Muscle that closes and protrudes lips

Answer 23

Oribularis oris

Question 24

Muscle that closes eye

Answer 24

Orbicularis oculi

Question 25

Muscle that raises corner of mouth (smiling muscle)

Answer 25

Zygomaticus

Question 26

Muscle that closes jaw

Answer 26

Masseter

Question 27

Second muscle that closes jaw

Answer 27

Temporalis

Question 28

Muscle used for head rotation and neck flexion

Answer 28

Sternocleidomastoid

Question 29

Muscle that rotates, elevates, and retracts scapula

Answer 29

Trapezius

Question 30

Muscle that moves scapula forward and downward, or raises ribs

Answer 30

Pectoralis minor

Question 31

Muscle that Adducts & medially rotates humerus, draws scapula anteriorly and inferiorly

Answer 31

Pectoralis major

Question 32

Muscle that Extends, adducts, & medially rotates humerus, raises body towards arms during climbing

Answer 32

Latissimus Dorsi

Question 33

Muscle that Abducts arm, extends or flexes humerus

Answer 33

Deltoid

Question 34

Supraspinatus, infraspinatus, teres minor, teres major, subscapularis

Answer 34

Rotators

Question 35

Muscle that flexes & rotates hand laterally (supinates forearm)

Answer 35

Biceps brachii

Question 36

Muscle that flexes forearm

Answer 36

Bachioradialis

Question 37

Muscle for the extension of forearm

Answer 37

Triceps brachii

Question 38

Flexor carpi radialis, flexor carpi ulnaris, and palmaris longus are all...

Answer 38

Flexors of the wrist

Question 39

Extensor carpi radialis longus, extensor carpi radialis brevis, extensor carpi ulnaris are all..

Answer 39

Extensors of wrist

Question 40

Muscle that flexes, rotates, and is for lateral flexion of torso

Answer 40

External oblique

Question 41

Muscle for flexion of abdominal wall

Answer 41

Transverses abdominis

Question 42

Muscle for torso flexion

Answer 42

Rectus abdominus

Question 43

Muscle that extends hip and laterally rotates thigh

Answer 43

Gluteus Maximus

Question 44

Muscle that flexes knee & rotates tibia laterally

Answer 44

Biceps femoris

Question 45

Muscle that extends thigh, flexes knee, and rotates tibia medially

Answer 45

Semitendinosus and semimembranosus

Question 46

Muscle that flexes and laterally rotates hip, and flexes knee

Answer 46

Sartorius

Question 47

Extensor of quadricep that is in the middle of leg

Answer 47

Rectus femoris

Question 48

Extensor of quadricep that's on the lateral side of leg

Answer 48

Vastus lateralis

Question 49

Extensor of quadricep that's on the medial side of leg

Answer 49

Vastus medialis

Question 50

Muscle that dorsiflexes foot and inverts ankle

Answer 50

Tibialis anterior

Question 51

Muscle for plantarflexion of the ankle

Answer 51

Gasteocnemius