Muscle action and function

Question 1

Biceps brachii

Answer 1

Anterior compartment of arm, flexes the formearm

Question 2

Triceps brachii

Answer 2

Posterior compartment of arm, extends the foremarm

Question 3

Hamstrings

Answer 3

group of three muscles in the posterior compartment of the thigh, flexes the leg

Question 4

Quadriceps femoris

Answer 4

Groups of four muscles in the anterior compartment of the thigh, extends the leg

Question 5

Flexor digitorum superficialis and flexor digitorum profundus

Answer 5

Anterior compartment of the forearm, flex the fingers and hand at the wrist

Question 6

Extensor digitorum

Answer 6

Posterior compartment of the forearm, extends the fingers and the hand at the wrist

Question 7

Occipital-frontalis frontal side

Answer 7

Raises/ furrow brow

Question 8

Occipital-frontalis occipital side

Answer 8

Unfurrow brow

Question 9

Currugator superciliii

Answer 9

Draws eyebrows medially and downward; frowning

Question 10

Nasalis muscle

Answer 10

At the maxilla and widens nostrils

Question 11

Levator labii superioris

Answer 11

Mouth muscle and raises upper lip

Question 12

Depressor labii inferioris

Answer 12

Draws lower lip downward

Question 13

Depressor angulus oris

Answer 13

Opening mouth and sliding lower jaw left and right

Question 14

Zygomaticus major

Answer 14

Draws angle of the mouth upward and laterally, smiling

Question 15

Orbicularis oris

Answer 15

Shaping of lips like during speech

Question 16

Buccinator

Answer 16

Lateral movement of cheeks, like sucking on straws, compress air in mouth while blowing

Question 17

Risorius

Answer 17

Draws angle of mouth laterally, expressing horror

Question 18

Mentalis

Answer 18

Elevates and protrudes lower lip and skin of the chin

Question 19

Extrinsic eye muscles

Answer 19

Move the eyeball and they originate from the bones of the orbit and insert onto the outer surface of the white of the eye

Question 20

Superior rectus

Answer 20

Moves eyes up and toward nose

Question 21

Inferior rectus

Answer 21

Moves eyes down and toward nose

Question 22

Lateral rectus

Answer 22

Move eyes away from nose

Question 23

Medial rectus

Answer 23

Moves eyes toward nose

Question 24

Inferior oblique

Answer 24

Moves eyes up and away from nose, rotates eyeballs

Question 25

Superior oblique

Answer 25

Moves eyes down and away from nose, rotates eyeballs

Question 26

Levator palpabrae superioris

Answer 26

Opens eyes

Question 27

Orbicularis oculi

Answer 27

Closes eyelids

Question 28

Masseter

Answer 28

Closes mouth and aids chewing, elevates

Question 29

Temporalis

Answer 29

Closes mouth, pulls lower jaw in under upper jaw, elevates and retracts

Question 30

Lateral pterygoid

Answer 30

Opens mouth, pushes lower jaw out under upper jaw, moves lower jaw side to side, depressor

Question 31

Medial pterygoid

Answer 31

Closes mouth, pushes lower jaw out under upper jaw, moves jaw upper side to side

Question 32

Glenioglossus

Answer 32

Draws tongue to one side, depresses midline of tongue or protrudes it

Question 33

Styloglossus

Answer 33

Draws tongue upward and posteriorly

Question 34

hyoglossus

Answer 34

depress tongue

Question 35

palatoglossus

Answer 35

elevates roof of tongue, closes oral cavity from pharynx

Question 36

Sternocleidomastoid

Answer 36

Rotates and tilts head, tilts head forward

Question 37

Semispinalis capitis

Answer 37

Rotates and tilts head backward

Question 38

Spelnius capitis

Answer 38

Rotates and tilts head to the side, tilts head backward

Question 39

Longissiumus capitis

Answer 39

Rotates and tilts head to the side, tilts head backwards

Question 40

Moves scapulae = superficial

Question 41

Trapezius

Answer 41

Both elevates and depresses shoulder, retracts scapula and extends head

Question 42

Latissimus dorsi

Answer 42

Adducts, extends, and medially rotates arm

Question 43

Levator scapulae

Answer 43

Elevated and adducts scapula

Question 44

Rhomboid major and minor

Answer 44

Elevates and adducts scapula

Question 45

Levatores costarum

Answer 45

Raises ribs in inspiration

Question 46

Serratus posterior superior

Answer 46

Raises ribs in inspiration

Question 47

Serratus posterior inferior

Answer 47

Lower ribs in expiration

Question 48

Deep muscles= move back flexion and extension

Question 49

Splenius

Answer 49

Extend neck and head connects to skull, capitis cervicis connects to vertebrae

Question 49

Erector spinae

Answer 49

illiocostalis, longissimus, spinalis extend trunk and vertebral column

Question 50

Transverso-spinalis

Answer 50

Semispinalis, multifidus and rotatores Extend trunk and bilateral action and rotate vertebral column in unilateral action

Question 51

Extrinsic back muscles

Answer 51

Trapezius, levator scapulae, rhomboid minor and major, latissimus dorsi and serratous posterior

Question 52

Intrinsic back muscles

Answer 52

Splenius cavitis and cervicis, erector spinae (illiocostalis, longissimus, spinalis)

Question 53

External or internal oblique

Answer 53

Twisting at waist

Question 54

Transversus abdominus

Answer 54

Squeezing abdomen during forceful exhalations, defecation, urination and childbirth

Question 55

Rectus abdominis

Answer 55

Sitting up

Question 56

Quadratus lumborum

Answer 56

Bending to the side

Question 57

Diaphragm

Answer 57

Inhalation and exhalation, in between cervitis and thoracis cavities

Question 58

External intercostals

Answer 58

Helps with inhalation with ribs

Question 59

Internal intercostals

Answer 59

It was forced exhalation with ribs

Question 60

Levator ani pubococcygeus and ani iliococcygeus

Answer 60

Compresses anal canal, defacation, urination, birth, coughing

Question 61

Superficial transverse perineal

Answer 61

Only supports perineal body maintaining anus at center of perineum

Question 62

Bulbospongiosus

Answer 62

Involuntary response, compress urethra when excreting urine in both sexes, ejaculation and erection in males

Question 63

Ischiocavernosus

Answer 63

Compresses veins to maintain erection of penis in males, erection of clitoris in females

Question 64

External urethral sphincter

Answer 64

Voluntary compresses urethra during urination

Question 65

External anal sphincter

Answer 65

Closes anus

Question 66

Subclavius

Answer 66

Stabilizes clavicle during movement by depressing it

Question 67

Pectoralis minor

Answer 67

Rotates shoulder anteriorly

Question 68

Serratus anterior

Answer 68

Moves arm from side of body to front of body' assists with inhalation

Question 69

Trapezius

Answer 69

Elevates shoulders, pulls shoulder blades together, tilts head backward

Question 70

Rhomboid major and minor

Answer 70

Stabilizes scapula during pectoral girdle movement

Question 71

Pectoralis major

Answer 71

adducts and medially rotates the arm axial muscle

Question 72

Latissimus dorsi

Answer 72

Adducts the arm, rotates the arm medially at the shoulder

Question 73

Deltoid

Answer 73

Abducts the arm

Question 74

Subscapularis

Answer 74

medially rotates arm, stabilizes shoulder joint

Question 75

Supraspinatus

Answer 75

Abducts the arm, stabilizes shoulder joint

Question 76

Infraspinatus

Answer 76

Rotates elbow laterally, tennis swing

Question 77

Teres major

Answer 77

Extends, medially rotates and adducts arm

Question 78

Teres minor

Answer 78

Rotates elbow laterally

Question 79

Coracobra chialis

Answer 79

Flexes and abducts arm