Lec 11-12 Major Muscles of the body

Question 1

Action of biceps brachii

Answer 1

flexion of elbow joint

supinate

Question 2

action of brachialis

Answer 2

flexion of elbow

doesnt supinate

Question 3

action of brachioradialis

Answer 3

flexion of elbow

doesnt supinate

Question 4

action of triceps brachii

Answer 4

extension of elbow

Question 5

what muscle are you using when you are raising your eyebrows?

Answer 5

occipitofrontalis

Question 6

what muscle are you using when you blink or squint your eye?

Answer 6

orbicularis oculi

Question 7

what muscle are you using when you’re kissing?

Answer 7

orbicularis oris

Question 8

what muscle are you using when smiling?

Answer 8

zygomaticus major

Question 9

what muscle are you using when you are frowning?

Answer 9

depressor anguli oris

Question 10

what muscle are you using when you are when you are snarling

Answer 10

levator labii superioris

Question 11

what muscle are you using when you are pouting

Answer 11

depressor labii inferioris

Question 12

what muscle are you using when you compress your cheek

Answer 12

buccinator

Question 13

what muscle do guys use when they tense their neck while shaving

Answer 13

platysma

Question 14

what is the insertion of the masseter

Answer 14

lateral angle of mandible

Question 15

what is the insertion of the medial pterygoid

Answer 15

mandible

Question 16

where is the insertion of the lateral pterygoid

Answer 16

superior portion of mandible.

Question 17

which muscles causes the mandible to elevate

Answer 17

temporalis, masseter, medial pterygoid

Question 18

which muscles cause mandible to protract

Answer 18

lateral pterygoid

Question 19

what do extrinsic muscles of the tongue refer to?

Answer 19

muscles that insert on the tongue but do not originate on the tongue.

Question 20

which muscles are extrinsic muscles of the tongue?

Answer 20

hyoglossus, genioglossus, styloglossus

Question 21

what is the action of the hyoglossus

Answer 21

depresses tongue

Question 22

what is the action of the genioglossus

Answer 22

sticking out tongue

Question 23

what is the action of the styloglossus

Answer 23

retraction of tongue

Question 24

what is the action of the suprahyoid muscles

Answer 24

support the tongue

Question 25

what is the action of the infrahyoid muscles

Answer 25

aid in swallowing

Question 26

2 muscles of the anterolateral neck?

Answer 26

sternocleidomastoid (SCM) and Scalenus Medius

Question 27

what are 2 synergistic muscles of the anterolateral neck and what action do they perform?

Answer 27

SCM and scalenus medius. flexion of the neck bilaterally.

Question 28

what muscle group are you using when you extend your back?

Answer 28

erector spinae group

Question 29

what muscle are you using when you flex laterally?

Answer 29

quadratus lumborum

Question 30

which muscles of the abdominal wall are responsible for rotation of the spine?

Answer 30

external oblique, internal oblique, rectus abdominus, transverse abdominus

Question 31

which is the most superficial abdomen?

Answer 31

rectus abdominis

Question 32

which muscles make up the pelvic diaphragm and what is their actions?

Answer 32

levatator ani
coccygeous
pubococcygeus

they support pelvic organs like bladder, uterus, large intestines

Question 33

what is the action of the urogenital diaphragm

Answer 33

reproduction

Question 34

which joints do the serratus anterior cross?

Answer 34

lateral ribcage

Question 35

what action does the serratus anterior perform?

Answer 35

pulls scapula forward

Question 36

if you are shrugging, which muscle are you using?

Answer 36

trapezius

Question 37

what joints do the lat dorsi cross

Answer 37

attach to humerus, cross shoulder joint posteriorly

Question 38

what joint does the teres major cross

Answer 38

humerus

Question 39

how are the pectoralis major and lat dorsi similar or different?

Answer 39

they are antagonistic in their direction of movement, but are both adduction

Question 40

which muscle of the arm performs abduction?

Answer 40

deltoid

Question 41

what action do the rotator cuff muscles perform

Answer 41

medial rotation

Question 42

which arm muscles are synergistic?

Answer 42

lat dorsi and teres major

Question 43

which muscles move the thigh?

Answer 43

illiacus, psoas major, tensor fascia lata, gluteus maximus, gluteus medius, adductor magnus

Question 44

which muscles of the thigh are responsible for flexion of the hip joint?

Answer 44

illiopsas group

• illiacus
• psoas major

Question 45

which muscle of the thigh is responsible for abduction of the hip?

Answer 45

gluteus medius

Question 46

which thigh muscle is responsible for flexion of the hip and extension of the knee?

Answer 46

quadriceps

Question 47

what action do hamstrings perform

Answer 47

extension of hip

flexion of knee

Question 48

which muscles are responsible for inversion?

Answer 48

tibialis anterior, tibialis posterior

Question 49

action of extensor hallucis longus?

Answer 49

extends big toe

hallucis longus = big toe

Question 50

which muscles are responsible for eversion

Answer 50

fibularis/peroneus brevis and longus

Question 51

which muscles are you using when you’re standing on your tippy toes

Answer 51

gastrocnemius and soleus

Question 52

which muscle are you using when you’re looking down at the floor?

Answer 52

SCM