Muscles - Test 1 Flashcards
Action: mylohyoid
Elevate the roof of the mouth for swallowing
Innervation: mylohyoid
Cranial nerve V- 3
Action: geniohyoid
Elevates hyoid and draws forward
Innervation: Geniohyoid
C1 branch hitch-hiking w/ hypoglossal nerve
Action: rectus capitis posterior minor
Extend
Action: rectus capitis posterior major-
Extend/ rotate
Action: obliquus capitis superior
Extend
Action; obliquus capitis inferior
Rotate
Sternocleidomastoid: origin and insertion
Origin: 1/3 medial clavicle
And manubrium
Insertion: mastoid process of temporal bone
Action: sternocleidomastoid
Bilateral: flex neck
Unilateral: rotate head so that face is directed in opposite direction
Innervation: sternocleidomastoid
Cranial nerve XI
Origin and insertion: anterior and medial scalene muscles
Origin: transverse process of vertebrae in upper cervical region
Insert: rib 1
Action: middle and anterior scalene
Flex neck, raise rib 1
Innervation: anterior and middle scalene muscle
Branches of ventral rami of cervical spinal nerves
Origin and insertion of omohyoid
Origin: from scapula, medial to suprascapular notch
Goes thru intermediate tendon which is linked to the clavicle and rib 1
Inserts into hyoid bone
Action: omohyoid
Depress hyoid bone
Innervation: omohyoid
Ansa cervicalis
Origin: sternohyoid
Clavicle, manubrium
Insertion: sternohyoid
Hyoid bone
Action: sternohyoid
Depress hyoid bone
Innervation: sternohyoid
Ansa cervicalis
Origin and insertion; sternothyroid
Origin: manubrium
Insertion: thyroid cartilage
ActioN: sternothyroid:
Depress thyroid cartilage
Indirectly depress hyoid bone and larynx.
Innervation: sternothyroid
Ansa cervicalis
Origin: thyrohyoid
Thyroid cartilage
InsertioN: thyrohyoid
Hyoid bone
Action: thyrohyoid
Depress hyoid bone
Elevate larynx
Innervation: thyrohyoid
C1 branches that hitch-hike with hypoglossal nerve (XII)
Origin: digastric muscle
Anterior belly: inner side of mandible
Posterior belly - mastoid notch of temporal bone
Insertion: digastric
Hyoid bone via intermediate tendon
Action: digastric muscle
Elevate hyoid.
Depress mandible
Innervation: digastric
Anterior belly: V3 (trigeminal)
Posterior belly: VII (facial nerve)
Origin and insertion: stylohoid
O: styloid process of temporal bone
I: hyoid bone
Action stylohyoid
Elevate hyoid bone
Innervation: stylohyoid
VII (Facial nerve)
Origin and insertion: mylohyoid
O; mandible at mylohyoid line
I: hyoid
Action: mylohyoid
Elevate hyoid
Raise floor of mouth in swallowing
Innervation; mylohyoid
V-3 (trigeminal nerve, mandibular branch)
Origin and insertion: geniohyoid
Origin: mandible, inner side
Insertion: hyoid bone
Action: geniohyoid
Elevate hyoid
Draws hyoid forward
Innervation: geniohyoid
C1 through hitch hiking fibers that run with hypoglossal nerve (XII)
A midline fibrous connective tissue band on posterior aspect of pharynx
Pharyngeal raphe
Insertion; all constrictor muscles?
Pharyngeal raphe
Circular muscles of pharynx:
Superior, middle, inferior constrictor mm.
Origin: superior constrictor muscle
Pterygomandibular raphe
Insertion: superior constrictor muscle
Pharyngeal raphe
Action: superior constrictor muscle
Constrict pharynx.
Innervation: superior pharynx
X (vagus)
Origin and insertion: middle constrictor
Hyoid
Pharyngeal raphe
Action: middle constrictor muscle
Constrict pharynx
Innervation: middle constrictor muscle
Vagus X
Origin and insertion, inferior constrictor muscle
Cricoid and thyroid cartilage
Pharyngeal raphe
Action: inferior constrictor
Constrict pharynx
Innervation: inferior constrictor
Vagus X
CT ban continuous anteriorly with buccinator muscle
Pterygomandibular raphe
Action: cricothyroid muscle
Tenses the vocal ligament to increase pitch
Action : thyroarytenoid muscle
Relaxs vocal ligaments to decrease pitch
Innervation: cricothyroid muscle
X Vagus
Innervation to thyroarytenoid muscle
X (vagus)
Action: arytenoideus
Completely closes the rima glottidis by sliding arytenoids
Action: lateral cricoarytenoid
Close rima glottidis by medially rotating arytenoids
Action: posterior cricoarytenoid
Rotate the arytenoids laterally to open them
Action: aryepiglottic muscle
Pulls epiglottis down during swallowing (not necessary in adults)
Innervation: aryepiglottic muscle
Vagus nerve (X)
What is the only muscle innervated by the superior laryngeal nerve?
Cricothyroid muscle (involved in raising pitch_
What swells in anaphylactic shock
Vestibular folds
Tracheotomy is performed where?
Between 1st and 2nd or 2nd and 3rd tracheal cartilages
Way to keep airway during anaphylactic shock without as much risk at high amount of bleeding
Cricothyrotomy
