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Comp 3 Anatomy

Terms in this set (89)

Sternocleidomastoid superior attachment
Mastoid process, lateral half of superior nuchal line
sternocleidomastoid inferior attachments
Anterior surface of manubrium of sternum (sternal head), superior surface of medial one-third of clavicle (clavicular head)
sternocleidomastoid action
Laterally flexes the head and rotates face to opposite side (unilateral); extends head (bilateral)
sternocleidomastoid innervation
Spinal accessory n. (CN XI)
sternohyoid superior attachment
body of hyoid bone
sternohyoid inferior attachment
Posterior surface of manubrium of sternum
sternohyoid action
depresses the hyoid
sternohyoid inneration
Ansa cervicalis (C1-C3)
omohyoid superior attachment
Inferior border of hyoid bone
omohyoid inferior attachment
Superior border of scapula near suprascapular notch
omohyoid action
Depresses and retracts the hyoid
omohyoid innervation
Ansa cervicalis (C1-C3)
sternothyroid superior attachment
Oblique line of the thyroid cartilage
sternothyroid inferior attachment
Posterior surface of manubrium of sternum
sternothyroid action
Depresses thyroid cartilage and larynx
sternothyroid innervation
Ansa cervicalis (C1-C3)
thyrohyoid superior attachment
Inferior border of body and greater horn of hyoid
thyrohyoid inferior attachment
Oblique line of thyroid cartilage
thyrohyoid action
Depresses hyoid and elevates the thyroid cartilage and larynx
thyrohyoid innervation
C1 via hypoglossal n. (CN XII)
digastric superior attachment
Mastoid process and digastric groove of the temporal bone (posterior belly)
digastric inferior attachment
Digastric fossa of mandible (anterior belly)
digastric action
Elevates hyoid and depresses mandible
digastric innervation
Nerve to mylohyoid (CN V3) (anterior belly), facial n. (CN VII) (posterior belly)
stylohyoid superior attachment
Styloid process
stylohyoid inferior attachment
body of hyoid
stylohyoid action
elevates hyoid
stylohyoid innervation
Facial n. (CN VII)
mylohyoid superior attachment
Mylohyoid line of mandible (lateral attachment)
mylohyoid inferior attachment
Hyoid bone and the mylohyoid raphe (medial attachment)
mylohyoid action
Supports the floor of the oral cavity
mylohyoid innervation
Nerve to mylohyoid (CN V3)
anterior scalene superior attachment
TP of C4-C6
anterior scalene inferior attachment
1st rib
anterior scalene action
Flexes neck, elevates 1st rib during inspiration
anterior scalene innervation
Anterior rami C4-C6
middle scalene superior attachment
Posterior tubercles of TP of C2-C7
middle scalene inferior attachment
1st rib
middle scalene action
Flexes neck, elevates 1st rib during inspiration
middle scalene innervation
Anterior rami C2-C6
posterior scalene superior attachment
Posterior tubercles of TP of C4-C6
posterior scalene inferior attachment
2nd rib
posterior scalene action
Flexes neck laterally, elevates 2nd rib during inspiration
posterior scalene innervation
Anterior rami C7-C8
obicularis oculi medial attachment
Medial orbital margin, medial palpebral ligament, and lacrimal bone
obicularis oculi lateral attachment
Skin around the orbital margin
obicularis oculi action
Tightly closes the eye (orbital part)
Blinking (palpebral part)
obicularis oculi innervation
Facial n. (CN VII)
levator labii superioris medial attachment
Upper lip (inferior attachment)
levator labii superioris lateral attachment
Maxilla just below the orbital margin (superior attachment)
levator labii superioris action
Elevates upper lip
levator labii superioris innervation
facial n. (CN VII)
zygomaticus major medial attachment
angle of the mouth
zygomaticus major lateral attachment
zygomatic bone
zygomaticus major actions
Draws angle of mouth superiorly and posteriorly
zygomaticus major innervation
facial n. (CN VII)
obicularis oris medial attachment
Maxilla, mandible, and skin in the median plane
obicularis oris lateral attachment
Angle of the mouth
obicularis oris action
Sphincter of the mouth
obicularis oris innervation
facial n. (CN VII)
buccinator medial attachment
angle of the mouth
buccinator lateral attachment
Pterygomandibular raphe and the lateral surfaces of the alveolar processes of the maxilla and mandible
buccinator action
Compresses cheek against molar teeth, keeping food on the occlusal surfaces during chewing
buccinator innervation
facial n. (CN VII)
depressor anguli oris medial attachment
angle of mouth
depressor anguli oris lateral attachment
mandible
depressor anguli oris action
Depresses the angle of the mouth
depressor anguli oris innervation
facial n. (CN VII)
depressor labii inferioris medial attachment
Lower lip (superior attachment)
depressor labii inferioris lateral attachment
mandible
depressor labii inferioris action
Depresses lower lip
depressor labii inferioris innervation
facial n. (CN VII)
masseter superior attachment
Inferior border and medial surface of zygomatic arch
masseter inferior attachment
Lateral surface of ramus and angle of mandible
masseter action
Elevates and protrudes mandible
masseter innervation
CN V3 via masseteric n.
temporalis superior attachment
Floor of temporal fossa and deep surface of temporal fascia
temporalis inferior attachment
Tip and medial surface of coronoid process and anterior border of ramus of mandible
temporalis action
Elevates and retrudes mandible
temporalis innervation
CN V3 via deep temporal nn.
medial pterygoid superior attachment
Medial surface of lateral pterygoid plate (deep head)
Tuberosity of maxilla (superficial head)
medial pterygoid inferior attachment
Medial surface of ramus of mandible
medial pterygoid action
Elevates and protrudes mandible (bilateral)
Side to side movement of mandible (unilateral)
medial pterygoid innervation
CN V3 via medial pterygoid n.
lateral pterygoid superior attachment
Infratemporal surface and infratemporal crest of greater wing of sphenoid (superior head)
Lateral surface of lateral pterygoid plate (inferior head)
lateral pterygoid inferior attachment
Neck of mandible, articular disc, and capsule of TMJ
lateral pterygoid action
Depresses and protrudes mandible (bilateral)
Side-to-side movement of mandible (unilateral)
lateral pterygoid innervation
CN V3 via lateral pterygoid n.
sternocleidomastoid inferior attachments
Anterior surface of manubrium of sternum (sternal head), superior surface of medial one-third of clavicle (clavicular head)
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