Muscles of Head, Neck, Trunk, Abdomen & Back

Question 1

occipitofrontalis

Answer 1

Epicranial aponerosis
Skin Eyebrow and forehead
wrinkle forehead

Question 2

orbicularis oculi

Answer 2

Orbital Origin
lateral palpebral raphe
Elevate eyebrows, wrinkle forehead and retract scalp with the occipital part

Question 3

Risorius

Answer 3

cheek fascia
angle of mouth
moves mouth corner laterally for grimace

Question 4

Frontalis (occipitofrontalis)

Answer 4

Frontal belly (frontalis): Skin of eyebrow, muscles of forehead / Occipital belly (occipitalis): (Lateral 2/3 of) superior nuchal line
Epicranial aponeurosis
Raises eyebrows

Question 5

Orbicularis oris

Answer 5

the anteromedial surface of maxilla and mandible
lip
lip protrusion

Question 6

Zygomaticus major

Answer 6

The lateral surface of the zygomatic bone
the angle of the mouth
Retracts and elevates corners of the mouth (smiling)

Question 7

Levator labii superioris

Answer 7

Zygomatic process of maxilla, maxillary process of zygomatic bone
Blends with muscles of upper lip
elevates upper lip

Question 8

Depressor labii inferioris

Answer 8

Oblique line of the mandible
integument of the lower lip
depresses lower lip

Question 9

Buccinator

Answer 9

Alveolar processes, thick parts of mandible, maxilla, and sockets of teeth, pterygo-mandibular raphe
In fibers of the orbicularis
Compresses cheeks (whistling, blowing, sucking)

Question 10

Platysma

Answer 10

fascia covering the superior portions of the pectoralis major and deltoid muscles below the clavicle
Lower border of mandible, skin, subcutaneous tissue, muscles around the mouth
tenses skin and neck and depress the mandible

Question 11

Mentalis

Answer 11

Lateral 2/3 of superior nuchal lines and mastoid of the temporal bone
galea aponeurotic
tenses and retracts scalp

Question 12

Levator palpebrae superioris

Answer 12

the sphenoid bone above optic foramen
superior tarsal plate
elevates upper eyelid, opens eyes

Question 13

Superior rectus

Answer 13

common tendinous ring/optic canal
sclera
moves eyeball superiorly and medially

Question 14

Lateral rectus

Answer 14

common tendinous ring and orbital fissure
Anterior to the equator of eyeball
moves eyeball laterally

Question 15

Medial rectus

Answer 15

Common tendinous ring
Anterior half of eyeball
moves eyeball medially

Question 16

Inferior oblique

Answer 16

maxillary bone
surface of eye
moves eyeball

Question 17

Temporalis

Answer 17

Temporal and frontal bones
Coronoid process and ramus of the mandible
Elevates and retracts mandible

Question 18

Lateral pterygoid

Answer 18

bottom of the sphenoid bone
temporomandibular joint and the condyloid process
Protracts mandible depresses mandible as in the opening mouth and moves mandible from side to side

Question 19

Styloglossus

Answer 19

Styloid process of the temporal bone
tip and sides of the tongue
Elevates tongue and draws it posteriorly (retraction)

Question 20

Digastric (Anterior & Posterior)

Answer 20

mandible
mastoid process of the temporal bone
opens the mouth

Question 21

Sternocleidomastoid

Answer 21

Sternum and clavicle
mastoid process of the temporal bone
flex neck, rotating head side to side

Question 22

Scalenes (anterior, middle, posterior)

Answer 22

cervical vertebrae
the first and second rib
elevate and tilt neck

Question 23

Sternohyoid

Answer 23

Manubrium and clavicle
hyoid
depression of hyoid bone

Question 24

Diaphragm

Answer 24

Sternum, costal cartilages, and lumbar vertebrae
central tendon
expands thoracic cavity

Question 25

External intercostals

Answer 25

the inferior border of rib above the superior border of rib below elevates rubs during respiration

Question 26

Rectus abdominis

Answer 26

inferior 8 ribs iliac crest and linear alba compresses the abdomen, flexion of the trunk

Question 27

External oblique

Answer 27

inferior 8 ribs iliac crest and linear alba compresses and flexes abdomen

Question 28

Internal oblique

Answer 28

iliac crest, inguinal ligament, and thoracolumbar fascia the cartilage of last 3 and 4 ribs and linear alba compresses and flexes abdomen

Question 29

Quadratus lumborum

Answer 29

iliac crest rib cage and lumbar vertebrae laterally flex the trunk, raise hip

Question 30

spinalis capitis

Answer 30

the spinous process of cervical vertebra and thoracic vertebrae mastoid process of the temporal bone the prime mover for head extension

Question 31

spinalis thoracis

Answer 31

Spinous processes Spinous processes extend the head at the neck

Question 32

Longissimus -thoracic

Answer 32

Thoracic part - spinous and transverse processes of vertebrae The lumbar part of thoracic Extension and flexion of the spine

Question 33

Longissimus cervicis

Answer 33

Transverse Processes or thoracic vertebra Transverse processes of cervical vertebrae Extension and flexion of the spine

Question 34

Longissimus thoracis

Answer 34

Lumbar spine ribs and transverse process of vertebrae extensions and flexion of the spine

Question 35

Iliocostalis lateral, cervices, throacis, lumborum

Answer 35

ribs, sacrum, medial end of the iliac crest, thoracolumbar fascia vertebrae extension and flexion of the spine

Question 36

Coccygeus

Answer 36

Ischial Spine Inferior sacrum, Coccyx Tenses and supports pelvic floor

Question 37

Ischiocavernosus

Answer 37

Ischial tuberosity and ramus Crus of clitoris or penis maintains erection

Question 38

External anal sphincter

Answer 38

Skin fascia surrounding anal canal/anus perineal body closes anal opening

Question 39

corrugator supercilii

Answer 39

orbital margin, which is the rim of the eye socket the outer part of each eye socket wrinkles brow (frowning)

Question 40

inferior rectus

Answer 40

the inferior part of the common tendinous ring sclera moves eyeball

Question 41

superior oblique

Answer 41

sphenoid bone the surface of the eyeball moves eyeball

Question 42

Masseter

Answer 42

Maxilla and Zygomatic arch angle and ramus of the mandible closes the mouth and retracts back the mandible

Question 43

Medial pterygoid

Answer 43

pterygoid plate ramus, mandible moves mandible from side to side elevates and protracts

Question 44

Lateral Pterygoid

Answer 44

bottom of the sphenoid bone temporomandibular joint and the condyloid process opens mouth and moves mandible side to side

Question 45

Genioglossus

Answer 45

Mandible under the surface of the tongue and hyoid bone depresses tongue and thrusts it anteriorly

Question 46

Styloid process on temporal bone

Answer 46

Body of hyoid bone Hyoid bone Hyoglossus depresses and retracts tongue

Question 47

Splenius capitis

Answer 47

styloid process near its apex stylomandibular ligament tip and sides of the tongue Extend neck, rotate the neck

Question 48

Internal intercostals

Answer 48

The superior border of rib below The inferior border of rib above depresses ribs during forced expiration

Question 49

Transversus abdominis

Answer 49

lliac crest inguinal ligament, lumbar fasci Compresses Abdomen

Question 50

Erector Spinae Muscles

Answer 50

Spinous processes of thoracic vertebrae The spinous process of the thorax Bilateral extension of the spine / unilaterally flexion of the spine

Question 51

Spinalis cervicis

Answer 51

lower ligament nuchae, the spinous process of C6 or C7 spinous processes of the axis (sometimes C3 and C4) extend the head at the neck

Question 52

Levator ani

Answer 52

Pubic Bones, Fascia, Ischial Spine rectum, coccyx, perineal body supports pelvic floor