muscles Flashcards
Trapezius M.
Action:
N:
Axn:
Extend neck bilaterally
SB
Rotate face away unilaterally
N:
Spinal accessory N.
Splenius capitis M.
Axn:
N:
Axn: Extend neck, SB, rotate face TOWARDS
I: posterior rami of C3-C5
Levator Scapulae M.
Axn:
N:
Axn: Extend neck, SB
I: dorsal scapular N
Sternocleidomastoid M.
Axn:
N:
Axn:
extend neck at AO joint bilaterally
laterally flex unilaterally
rotate face away unilaterally
N: Spinal accessory N (CN 11)
Anterior Scalene M.
A:
N:
A:
Elevate 1st rib, flex neck SB N: Anterior rami of C4-C6
Middle Scalene M.
A:
N:
A:
Elevate first rib
Laterally flex neck. (SB)
N: Anterior rami of C3-8
Posterior scalene M.
A:
N:
A:
Elevate 2nd rib
SB
N:
Anterior rami of C5-C7
Omhyoid M.
Axn:
N:
Superior belly and inferior belly of omhyoid m. are separated by fascial slip attach to the clavicle.
Axn: Depress, retract and steady the Hyoid B
N: Ansa cervicalis (C1-C3)
congenital torticollis?
affects what m
SCM
Johnny has congenital torticollis; head SB to the R and rotates to the L. what muscle is fucked up
R SCM muscle
Mylohyoid M
Axn:
N:
Axn:
- elevates hyoid bone, floor of mouth and the toungue
N:
N. to mylohyoid
Geniohyoid M.
Axn:
N:
Axn:
Elevates hyoid bone
shortens floor of mouth
widens pharynx
N:
C1 via hypoglossal N
Digastric M
Axn:
N:
Axn:
Depresses Mandible
elevates and steadies Hyoid B.
N:
Anterior Belly- N. to the Mylohyoid.
Posterior Belly- Facial N.
Stylohyoid M.
A:
N:
A: Elevate and retract hyoid bone. elongate floor of mouth N: Facial N.
Sternohyoid m.
Attachment points:
Axn:
N:
Axn: depress hyoid bone
N: Ansa Cervicalis (C1-C3)
Sternothyroid m.
Attachment points:
Axn:
N:
Axn: Depresses Hyoid B. and Larynx
N: Ansa Cervicalis (C2, C3)
Thyrohyoid M.
Attachments:
Axn:
N:
Attachments: thyroid cartilage -> hyoid bone
Axn: Depress hyoid bone and elevate larynx
N: C1 via hypoglossal
Omohyoid M.
Attachments:
Axn:
N:
Omohyoid M: has a superior belly and inferior belly
Attachments: scapula (shoulder) -> hyoid bone
Axn: Depress, retracta and steady the hyoid bone
N: Ansa Cervicalis (C1-C3)
just lk sternohyoid m.
Superior Pharyngeal Constrictor M.
N:
N:
Pharyngeal branch of Vagus N.
Pharyngeal Plexus
Middle Pharyngeal Constrictor M.
AND
Inferior pharyngeal constrictor M.
N:
Pharyngeal branch of Vagus N.
Pharyngeal Plexus
branches of the Recurrent Laryngeal N.
Palatopharyngeus M.
A:
N:
Axn: Elevate Pharynx and Larynx when we swallow
N:
Pharyngeal branch of Vagus N.
Pharyngeal Plexus
Salpingopharyngeus M
Axn:
N:
Axn: elevate pharynx and larynx when we swallow
N:
Pharyngeal branch of Vagus N.
Pharyngeal Plexus
Stylopharyngeus M.
Axn:
N:
A: Elevate Pharynx and Larynx when we swallow
N: Glossopharyngeal N. (CN IX)
–
laryngeal ms. innervation
all are recurrent laryngeal N EXCPET cricothyroid m; it is external laryngeal N
longus colli m. innercation
C2-C6
longus capitis m.
C1-C3
rectus capitus anterior flexes head and laterals SB
innervation;
C1-C2
Zone I includes:
Structures at risk:
lungs, cervical pleura thyroid, parathyroid, eso, trachea common carotid jugular
zone II
larynx laryngopharynx ESO carotid vertebral A
zone III
Angle of mandible -> base of the skull
- Salivary Glands,
- Oral and Nasal Cavities
- Oro- and Nasopharynx.
thyroidectomy. can damage :
R recurrent laryngeal N
inferior thyroid A.
recurrent laryngeal N runs where
run between thyroid gland and trachea and larynx
Larynx connects what
oropharynx to the trachea
foreign bodies get stuck most often where
. R main bronchus
CN: Branchial Fistula:
remnant of 2nd pharyngeal pouch and groove
Branchial Sinus:
communicates externally but NOT internally
: Branchial Cyst: can damage
hypoglossal
glosspharytngeal
spinal acessory
L recurrent laryngeal N becomes what
Inferior laryngeal N.
