Muscle Part 1

Question 1

Frontalis - Anterior Scalp

Answer 1

Cranial Aponeurosis - Skin of eyebrows - Raises eyebrows & wrinkles forehead

Question 2

Occipitals - Posterior scalp

Answer 2

Occipital bone and Temporal bone - Cranial Aponeurosis - Fixes aponeurosis and pulls scalp posteriorly

Question 3

Orbicularis Oris - Thin, flat sphincter muscle of eyelid

Answer 3

Frontal bone and Maxilla - Tissue around eyes - Blinks and closes eyes

Question 4

Orbicularis Oris - Encloses mouth, muscle of facial expression

Answer 4

Mandible & Maxilla - Skin and muscle around eyes - Closes and protrudes lips

Question 5

Temporalis - Fan- shaped muscle that covers part of temporal, frontal and parietal bones.

Answer 5

Temporal Bone- Mandible - Closes Jaw

Question 6

Masseter- Powerful muscle that covers lateral aspect of mandibular ramus.

Answer 6

Temporal Bone - Mandible - Closes Jaw

Question 7

Buccinator - Thin, horizontal cheek muscle; principal muscle of cheek; deep to masseter.

Answer 7

Maxilla and mandible near molars - Orbicularis Oris - Compresses cheek

Question 8

Zygomaticus - Muscle pair extending diagonally from cheekbone to corner of mouth.

Answer 8

Zygomatic bone - Skin and muscle at corner of lips - Raises corner of mouth

Question 9

Risorius - Slender muscle inferior and lateral to zygomaticus.

Answer 9

Lateral Fascia associated with masseter muscle - Skin at angle of mouth - Draws corner of lips laterally

Question 10

Levator Labii Superioris - Thin muscle begween orbicularis oris and inferior eye margin

Answer 10

Zygomatic bone and Infraorbital margin of maxilla - Skin and muscle of upper lips - Open lips; raises and furrows upper lips

Question 11

Depressor Labii inferioris - Small muscle running from mandible to lower lip

Answer 11

Body of mandible lateral to its midline - Skin and muscle of lower lip - Draws lower lip inferiorly (pout)

Question 12

Depressor anguli oris - Small muscle group lateral t depressor labii inferioris

Answer 12

Body of mandible below incisors - Skin and muscle at angle of mouth below insertion of zygomaticus - Draws corner of mouth down and laterally ( a “tragedy mask” )

Question 13

Platysma - Unpaired thin, sheetlike superficial neck muscle; not strictly a head muscle but plays a role in facial expression

Answer 13

Connective tissue covering of superior chest muscles - Tissue around mouth - Tenses skin of neck ( as in shaving)

Question 14

Sternocleidomastoid - Neck muscle classified with lateral cervical muscle

Answer 14

Sternum & Clavicle - Temporal Bone (mastoid process ) - Flexes neck ; laterally rotates head

Question 15

Scalene - Located more anteriorly on neck; deep to platysma and sternocleidomastoid

Answer 15

Transverse process of cervical vertebrae - Anterolaterally on first two ribs - Elevate first two ribs; flexes and rotate neck

Question 16

Splenius Capitis - Intrinsic muscle of spine

Answer 16

Lower half of ligamentum nuchae and spinous process of 7th cervical vertebrae and 3rd or 4th thoracic vertebrae - Mastoid process of temporal bone and occipital bone - Supports head errection

Question 17

Pectoralis Major - Anterior shoulder joint muscles forming the shoulder girdle

Answer 17

Sternum, Clavicle and 1st to 6th ribs - Proximal Humerus - Flexes and adducts humerus

Question 18

External Oblique - Situated at the lateral and anterior part of the abdomen

Answer 18

Lower eight ribs - Iliac crest - Flexes and rotates vertebral column

Question 19

Rectus Abdominis - Most superficial muscle of abdomen

Answer 19

Pubis - Sternum and 5th to 7th ribs - Flexes vertebral column