Muscles (Torso, Head, & Neck)

Question 1

muscles of head

Answer 1

frontalis mucscle
occipitalis muscle
orbicularis oculi
temporalis
masseter
buccinator
orbicularis oris
zygomaticus major & minor
risorius

Question 2

muscles of the neck & back

Answer 2

sternocleidomastoid
scalenes: anterior, middle, posterior
levator scapulae
trapezius
latissimus dorsi
rhomboid major
rhomboid minor
serratus anterior
erector spinae: longissimus, iliocostalis, spinalis

Question 3

muscles of the anterior torso

Answer 3

diaphragm
external intercostals
internal intercostals
pectoralis major
pectoralis minor
rectus abdominis
external oblique
internal oblique
transverse abdominis

Question 4

frontalis muscle

Answer 4

origin: epicranial aponeurosis
insertion: skin of eyebrows
action: elevates eyebrows

Question 5

occipitalis muscle

Answer 5

origin: occipital bone
insertion: epicranial aponeurosis
action: retracts scalp

Question 6

orbicularis oculi

Answer 6

origin: medial wall of orbit
insertion: skin around eyelid
action: closes eyelids

Question 7

temporalis

Answer 7

origin: temporal fossa
insertion: coronoid process of mandible
action: elevates mandible

Question 8

masseter

Answer 8

origin: zygomatic arch
insertion: mandibular ramus
action: elevates mandible

Question 9

buccinator

Answer 9

origin: alveolar process
insertion: orbicularis oris
action: compresses cheek

Question 10

obicularis oris

Answer 10

origin: corners of mouth
insertion: dermis of lips
action: protrudes lips

Question 11

zygomaticus major

Answer 11

origin: zygomatic bone
insertion: angle/edge of mouth
action: elevates corner of mouth

Question 12

risorius

Answer 12

origin: zygomatic arch
insertion: corner or mouth
action: draws corners of mouth laterally

Question 13

sternocleidomastoid

Answer 13

origin: manubrium of sternum
insertion: mastoid process
action: head rotation

Question 14

scalenes

Answer 14

origin: transverse processes of cervical vertebrae
insertion: ribs 1 & 2
action: elevates rib 1 & 2

Question 15

levator scapulae

Answer 15

origin: transverse process of C1-C4
insertion: superior angle of scapula
action: elevates scapula

Question 16

trapezius

Answer 16

origin: spinous processes of thoracic vertebrae
insertion: acromion
action: elevates scapula

Question 17

latissimus dorsi

Answer 17

origin: iliac crest
insertion: intertubercular groove
action: adduction of arm

Question 18

rhomboid major

Answer 18

origin: spinous process of T2-T5
insertion: medial border of scapula
action: adducts scapula

Question 19

rhomboid minor

Answer 19

origin: spinous processes of C7-T1
insertion: medial border of scapula
action: adducts scapula

Question 20

serratus anterior

Answer 20

origin: most ribs
insertion: medial border of scapula
action: protracts scapula

Question 21

erector spinae

Answer 21

origin: posterior sacrum
insertion: mastoid process
action: extends vertebral column

Question 22

diaphragm

Answer 22

origin: xiphoid process
insertion: central tendon
action: inspiration

Question 23

external intercostals

Answer 23

origin: inferior border of superior rib
insertion: superior border of inferior rib
action: elevate ribs for inspiration

Question 24

internal intercostals

Answer 24

origin: superior border of inferior rib
insertion: inferior border of superior rib
action: depress ribs

Question 25

pectoralis major

Answer 25

origin: medial clavicle
insertion: intertubercular groove
action: medial rotation of arm

Question 26

pectoralis minor

Answer 26

origin: ribs 3-5
insertion: coracoid process
actions: elevates ribs

Question 27

rectus abdominus

Answer 27

origin: pubic symphysis
insertion: xiphoid process
action: flexes vertebral column

Question 28

external oblique

Answer 28

origin: ribs 5-12
insertion: linea alba
action: compresses abdomen

Question 29

internal oblique

Answer 29

origin: iliac crest
insertion: linea alba
action: compresses abdomen

Question 30

transverse abdominus

Answer 30

origin: iliac crest
insertion: linea alba
action: compresses abdomen