muscles Flashcards
platysma (N, A most important)
O: deep fascia covering pec major and deltoid
I: lower margin of body of mandible/blends with risoreus/below chin
N: cervical branch of facial nerve (CN VII)
A: depresses mandible, draws down lower lip and angle of mouth
trapezius (A, N)
A: SUP- elevates, upwardly rotates scapula // MIDDLE- retracts scapula // INF- depresses scapula, rotates scapula superiorly
N: spinal accessory n (CN XI)
sternocleidomastoid
O: upper part of manubrium, middle 1/3 of clavicle
I: mastoid process, lateral part of superior nuchal line
N: spinal accessory n (CN XI), ventral rami of C2-C3 (proprioceptive)
A: together- flex head at atlanto-occipital joint, flex cervical part of vertebral column
separate- moves face to opposite side
scalene muscles
O: transverse tubercles of cervical vertebrae
I: 1st/2nd rib (middle,anterior/posterior)
A: laterally bend neck, elevate 1st/2nd rib during heavy respiration
N: motor branches of cervical/brachial plexus
longus colli
I: attach to adjacent cervical vertebrae
A: flex cervical column
longus capitus
O: base of occipital bone
I: transverse processes of cervical vertebrae
A: flexes skull on C1
N: dorsal rami of cervical nerves
splenius capitus
A: extends skull on cervical column, laterally bends/rotates to same side
I: dorsal rami of cervical nerves
levator scapulae
O: transverse processes of C1-C4
A: elevates scapula
N: dorsal scapular n.
semispinalis capitus
A: extends head and spinal column
N: dorsal rami of cervical nerves
obliquius capitus (superior/inferior)
A: extend head, tilt head to same side, rotate head (inf=same side, sup=opposite side)
N: suboccipital n. (C1)
rectus capitis posterior (maor/minor)
A: extend head, tilt to same side, rotation (major=same side, minor = opposite side)
N: suboccipital n (C1)
mylohyoid
N: nerve to mylohyoid (branch of inferior alveolar n - CN V3)
A: elevates hyoid, depresses mandible
geniohyoid
N: C1 via hypoglossal n (CN XII)
A: pulls hyoid superiorly
stylohyoid
N: branch of facial nerve (CN VII)
A: elevates, retracts hyoid
digastric, anterior belly
N: nerve to mylohyoid
A: depresses mandible
digastric, posterior belly
N: branch of facial n (CN VII)
A: elevates hyoid
sternohyoid
N: ansa cervicalis
A: depresses hyoid
sternothyroid
N: ansa cervicalis
A: depresses thyroid cartilage
omohyoid
N: ansa cervicalis
A: depresses/retracts hyoid
thyrohyoid
N: C1 via hypoglossal
A: depresses hyoid, elevates thyroid cartilage
branches of external carotid artery
SALFOPSMax
Superior thyroid Ascending pharyngeal Lingual Facial Occipital Posterior Auricular Superficial temporal Maxillary
occipito-frontalis muscle
facial n (CN VII)
temporalis muscle
mandibular branch of trigeminal (CN V3)
muscles innervated by CN III
Superior rectus Inferior rectus Medial rectus Inferior oblique Levator palpebrae superioris
muscles innervated by trochlear n (CN IV)
superior oblique m
medial rotation of eye
muscles innervated by abducens n (CN VI)
lateral rectus m
abduct eye
massester muscle
mandibular division trigeminal (CN V3)
lateral/medial pterygoid
mandibular division trigeminal (CN V3)
myelohyoid
mandibular division trigeminal (CN V3)
tensor veli palatini
mandibular division trigeminal (CN V3)
[swallowing]
tensor tympani
mandibular division trigeminal (CN V3)
[dampen sound of chewing]
pharyngeal constrictors
Vagus (CN X)
laryngeal muscles
Vagus (CN X)
(most) palatal muscles
Vagus (CN X)
hypoglossus muscle
hypoglossal n (CN XII)
genioglossus m.
hypoglossal n (CN XII)
styloglossus m.
hypoglossal n (CN XII)
palatoglossus m.
Vagus (CN X)
