The Hard Shit

Question 1

Frontalis

Answer 1

• A= Raises eyebrows
• O= Aponeurosis
• I= Skin of eyebrows

Question 2

Occipitalis

Answer 2

• A= Pulls scalp posteriorly
• O= Occipital bone
• I= Aponeurosis

Question 3

Mentalis

Answer 3

• A= Protrudes lower lip
• O= Anterior mandible
• I= Skin of chin

Question 4

Risorius

Answer 4

• A= Draws corner of lip laterally
• O= Fascia of masseter
• I= Skin at angle of mouth

Question 5

Buccinator

Answer 5

• A= Draws corners of lips laterally
• O= Molar region of mandible and maxilla
• I= Orbicularis oris

Question 6

Orbicularis oris

Answer 6

• A= Close lips
• O= Maxilla and mandible
• I= Skin of mouth

Question 7

Orbicularis oculi

Answer 7

• A= Close eyelids
• O= Frontal and maxillary bones
• I= Skin of eyelid

Question 8

Zygomaticus

Answer 8

• A= Elevates corners of mouth
• O= Zygomatic bone
• I= Skin and muscle at corners of mouth

Question 9

Depressor labii inferioris

Answer 9

• A= Draws corners of mouth down and laterally
• O= Body of mandible
• I= Skin and muscle of lower lip

Question 10

Temporalis

Answer 10

• A= Elevate and retract mandible
• O= Temporal fossa
• I= Coronoid process of mandible

Question 11

Masseter

Answer 11

• A= Elevate mandible
• O= Zygomatic arch and maxilla
• I= Angle and ramus of mandible

Question 12

Platysma

Answer 12

• A= Depress mandible
• O= Fascia of chest
• I= Lower margin of mandible, skin and muscle at corner of mouth

Question 13

Sternocleidomastoid

Answer 13

• A= Flex neck and rotate head
• O= Manubrium of sternum and clavicle
• I= Mastoid process of temporal bone

Question 14

Digastrics

Answer 14

• A= Elevate hyoid, open mouth, depress mandible
• O= Lower mandible and mastoid process
• I= Hyoid bone

Question 15

Scalenes

Answer 15

• A= Flex and rotate neck, elevate ribs
• O= Transverse process of cervical vertebrae
• I= Ribs 1 and 2

Question 16

Stylohyoid

Answer 16

• A= Elevates and retracts hyoid
• O= Styloid process of temporal bone
• I= Hyoid

Question 17

Mylohyoid

Answer 17

• A= Elevates hyoid bone during swallowing
• O= Medial mandible
• I= Hyoid bone

Question 18

Sternohyoid

Answer 18

• A= Depresses larynx
• O= Manubrium and clavicle
• I= Hyoid bone

Question 19

Levator scapulae

Answer 19

• A= Raises scapula
• O= Transverse processes of C1-C4
• I= Superior border of the scapula

Question 20

Pectoralis minor

Answer 20

• A= Elevates upper ribs
• O= Ribs 3-5
• I= Coracoid process

Question 21

External intercostals

Answer 21

• A= Elevate rib cage, aid in inspiration
• O= Inferior border of rib above
• I= Superior border of rib below

Question 22

Serratus anterior

Answer 22

• A= Move scapula forward, rotate scapula
• O= Ribs 1-8
• I= Medial border of scapula

Question 23

Internal intercostals

Answer 23

• A= Depress rib cage
• O= Superior border of rib below
• I= Inferior border of rib above

Question 24

Rectus abdominis

Answer 24

• A= Flex and rotate vertebral column
• O= Pubic crest and symphysis
• I= Xiphoid process, cartilage of ribs 5-7

Question 25

External oblique

Answer 25

• A= Flex and rotate vertebral column, trunk rotation, lateral flexion
• O= Ribs 5-12
• I= Pubic and iliac crests, linea alba

Question 26

Transversus abdominis

Answer 26

• A= Compress abdominal contents
• O= Cartilage of ribs 6-12, inguinal ligament, lumbar fascia
• I= Pubic crest, linea alba

Question 27

Internal oblique

Answer 27

• A= Flex and rotate vertebral column, trunk rotation, lateral flexion
• O= Iliac crest, inguinal ligament, lumbar fascia
• I= Cartilage of ribs 9-12, linea alba, pubic crest

Question 28

Trapezius

Answer 28

• A= Extend neck; raise, rotate, and adduct scapula
• O= Occipital bone, spinous processes of C7 and thoracic vertebrae
• I= Acromion and spine of scapula, lateral 3rd of clavicle

Question 29

Erector spinae

Answer 29

• A= Extend neck and vertebral column
• O= Iliac crest, transverse processes of C7-T12
• I= Occipital bone and spinous process of cervical vertebrae

Question 30

Latissimus dorsi

Answer 30

• A= Arm extension; adduct and rotate arm
• O= Spinous process of T6-L5, iliac crest
• I= Intertubercle sulcus of humerus