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Quiz 4
Facial, Neck, Thoracic Wall, Respiratory, Abdominal Muscles
37
Anatomy
Undergraduate 4
11/01/2010

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Term
Obliquus Capitus Inferior
Definition

Origin: Spine of Axis

Insertion: Transverse Process of Atlas

Action: rotates the face to the same side and stabilizes the atlanto-axial joint

Term
Obliquus Capitus Superior
Definition
O: Transverse Process of atlas
P: Occipital bones below superior nuchal lines on lateral side
A:Extends head, laterally flexes the head, stabilizes the atlanto-axial joint
Term
Rectus Capitus Posterior Major
Definition
O: Spine of axis
I: Below inferior nuchal lines
A: Support atlantoaxial joint, extends head, rotates face
Term
Rectus Capitus Posterior Minor
Definition
O: Posterior Tubercle of atlas
I: Below inferior nuchal lines, medial to the rcp major
A:
Term
Sternocleidomastoid
Definition
O: Manubrium and medial third of clavicle
I: Mastoid process of temporal bone
A: Flex neck, extend head, lateral flex, rotate head opposite side, elevation of clavicle/manubrium
Term
Sternohyoid
Definition
O: posterior surface of the manubrium, medial portion of the clavicle
I: body of the hyoid bone
Term
Omohyoid
Definition
O: Superior margin of scapula
I: Body of Hyoid
A: Depresses hyoid after elevation
Term
Sternothyroid
Definition
O: Posterior surface of the manubrium
I: Side of the Thyroid Cartilage
A: Depresses larynx following elevation
Term
Thyrohyoid
Definition
O: Oblique line on Thyroid cartilage
I: Body and greater horn of hyoid bone
A: Depress hyoid, raises the larynx
Term
Digastric
Definition
O: Inferior border of mandible, mastoid groove
I: Hyoid bone
A: Depress mandible, elevate hyoid
Term
Mylohyoid
Definition
O: Inferior border of mandible
I: Body of hyoid
A: Elevate floor of mouth, depress mandible, elevate hyoid
Term
Stylohyoid
Definition
O: Styloid process of temporal bone
I: Hyoid bone
A: Elevates and retracts hyoid
Term
Frontalis
Definition
O: Galena aponeurotica
I: Skin of eyebrow
A: Wrinkle forehead, elevate eyebrows
Term
Procerus
Definition
O: Nasal bone and lateral nasal cartilage
I: Fibers pass upwards to insert into the skin overlying the bridge of the nose
A:
Term
Occipitalis
Definition
O: Occipital bone and Mastoid Process
I: Galena aponeurotica
A: Move scalp backward
Term
Orbicularis Oculi
Definition
O: Bones of medial orbit
I: Tissue of eyelid
A: Close eye and aid excretion of tears
Term
Orbicularis Oris
Definition
O: Fascia surrounding lips
I: Mucosa of lips
A: Purses the lips, close/protrude
Term
Zygomaticus Major
Definition
O: Zygomatic Bone
I: Superior corner of orbicularis oris
A: Elevates and draws angle of the mouth laterally
Term
Zygomaticus Minor
Definition
O: Zygomatic bone
I: Lateral part of upper lip
A: Elevates and everts upper lip
Term
Risorius
Definition
O: Fascia of cheek
I: Orbicularis oris at corner of mouth
A: Retracts angle of the mouth
Term
Depressor Anglui Oris
Definition
O: Outer Surface of the Mandible
I: Angle of Mouth
A: Depress the angle of the mouth
Term
Depressor Labii Inferioris
Definition
O: Outer Surface of Mandible
I: margin of lower lip
A: ?
Term
Buccinator
Definition
O: Maxilla
I: Orbicularis oris
A: Compress cheeks, aids in mastication
Term
Nasalis (transverse & alar)
Definition
O: Frontal process of maxilla
I: Aponeurosis of nose
A: Transverse wrinkles on the nose, alar dilates nostrils
Term
Platysma
Definition
O: Fascia over the lower neck and upper lateral chest
I: Mandible and skin of lower face
A: Depresses Mandible, Tenses Skin of Inferior Face and Neck
Term
Temporalis
Definition
O: Temporal fassia and entire temporal fossa
I: Coronoid fossa and anterior border of ramus of mandible
A: Elevate mandible and retract mandible
Term
Masseter
Definition
O: Zygomatic arch
I: lateral ramus of mandible
A: Elevate and protract mandible
Term
Medial Pterygoid
Definition
O: Sphenoid bone
I: Medial ramus of mandible
A: Protract and elevate mandible, laterally displace mandible
Term
Lateral Pterygoid
Definition
O: Sphenoid
I: Anterior side of mandibular condyle
A: Protracts mandible, laterally displaces mandible
Term
External Intercostals
Definition
O: Inferior border of adjacent rib (passes obliquely infrasternally)
I: Superior border of adjacent inferior rib
A: Fixate of compress thoracic cavity, elevates during forced inspiration
Term
Internal Intercostals
Definition
O: Superior Border of adjacent inferior rib (passes obliquely suprasternally)
I: Inferior border of adjacent rib
A: Depress during expiration
Term
Transverse Thoracis
Definition
O: Internal surfaces of body of sternum, xyphoid process & costal cartilages of ribs 4-6
I: Lower border and internal surfaces of ribs 2-6
A: Depress ribs 2-6 during forced expiration
Term
Subcostals
Definition
O: Internal surface (near inferior border) of rib near angle
I: Superior border (near angle) of rib, 1-3 ribs below the origin
A: Compress the intercostal spaces and aid in forced expiration
Term
Diaphragm
Definition
O: Xyphoid process, costal cartilages of last 6 ribs
I: Central tendon of diaphragm
A: Increase the volume of the thoracic cavity for breathing
Term
Serratus Posterior Superior
Definition
O: Ligamentum Nuchae, last cervical spine, thoracic spines 1-3
I: Superior border of ribs 2-5, just past angle
A: Elevate and stabilize ribs 2-5
Term
Serratus Posterior Inferior
Definition
O: Last 2 thoracic and first 2 Lumbar spines
I: Inferior border of lower four ribs
A: Depress/stabilize ribs 9-12
Term
Scalenus Anterior
Definition
O: Anterior tubercles of the transverse processi of the 3rd and 6th cervical vertebrae
I: Scalene tubercle and ridge on superior surface of first rib
A: Elevate/Fix 1st rib, lateral flexion of C3-C6, Flex vertebrae C3-C6
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