things i keep forgetting Flashcards
occipitofrontalis
raises eyes/wrinkles forehead
orbicularis oculi
closes eye/winking
buccinator
cheek on teeth; pushes air out resisting distension; can draw mouth to one side
zygomaticus major
pulls corner of mouth superior and lateral
levator anguli oris
raises angle of mouth
risorious
“sus smile”
retracts outer corner of mouth (grimace)
depressor angle oris
pulls angle of mouth inferior and lateral
mentalis
elevates/protrudes lower lips
platysma
depresses skin/wrinkles neck
orbicularis oris
compresses/protrudes lips (kissing, blowing, sucking) resisting distention
what are the branches of the facial nerve (innervates muscles of facial expression)
temporalis
zygomatic
buccinator
marginal mandibular
cervical
posterior auricular
action of semispinalis capitis
extend neck/head
lat flex (same side)
rotate OPPOSITE
splenias capitis
extend
lat flex/rotate SAME
longissimus capitis
extend
lat flex/rotate SAME
iliocostalis
extend
lateral flex
longus colli/capitis
flex
lat flex/rotate same side
rectus capitis anterior/laterales
flex @ A-O
lat flex @A-O
suprahyoid ms action
elevate hyoid/ depress (open) mandible
infrahyoid ms action
depress hyoid/ draw larynx/pharynx down during phonation and swallowing (except thyro)
submandibular triangle
submandibular gland
hypoglossal n
facial a/v
muscular triangle
sternohyoid
sternothyroid
thyroid
parathyroid
carotid triangle
carotid body
carotid bifurcation
vagus n
hypoglossal n
scm region
contents of carotid sheath: carotid a, int jugular vein, vagus n (and jugular ln)
occipital (post triangle)
accessory n
transverse cervical a
trunks of plexus
cervical plexus
omoclavicular (post triangle)
suprascapular a
subclavian a
deep fascia of neck
investing, pre tracheal, prevertebral, carotid
investing
covers scm and trap
pretracheal
nasopharynx
respiratory track
thyroid
prevertebral
scalenes
post neck ms
trunks of plexus
phrenic
ms that elevate the mandible
masseter
temporalis
med ptery
ms that depress the mandible
lat ptery (opens about 15 deg)
ms that protrude the mandible
masseter
med ptery
lat ptery
ms that retract the mandible
temporalis
lateral movements of mandible (chewing)
temporalis
lateral ptery
med ptery (small grinding)
synovial joints must have:
- joint cavity
- articular cartilage
- synovial membrane
- fibrous capsule
kyphosis
excessive posterior tilt of spine
(thoracic spine has a normal kyphotic curvature)
lordosis
excessive anteiror tilt
what intrinsic back muscles contralaterally rotate
semispinalis
rotatores
multifidus
levator costarum
what intrinsic back muscles are innervated by anterior rami
intertransverssari anteriores cervicis and lateralis lumborum
ligaments of the tfcc
- dorsal radioulnar ligament
- palmar radioulnar ligament
- ulnocarpal disc
- ulnotriquetrial
- radiotriquetrial
- ulno lunate ligament
- UCL
- ulnocarpo meniscus homologue
what is in the anatomical snuff box
tendons: extensor pollicis brevis and abductor pollicis longus
bones deep in snuff box: trapezium/scaphoid (bad blood supply)
radial a. runs deep
inflammation: dequervians tenosynovitis (inflammation of the synovial sheaths that holds the tendon)
1st CMC joint
saddle joint
flex/ext-trapezium is convex
abd/add- trapezium is concave
opposition- initial abduction followed by medial rotation
other CMC joints- plane joints (glide/slide)
abductor pollicis longus
int mem to base of 1st
abd @ CMC
abductor pollicis brevis (thenar)
scaphoid/trap to base of proximal phalanx
CMC abduct
extensor pollicus longus
int mem to base of distal phalanx
ext @ WRIST/MCP/IP
CMC ABD (line of pull)
extensor pollicis brevis
int mem to base of metacarpal
ext @ CMC/MCP
flexor pollicis longus
int mem to distal phalanx
flex @ WRIST/CMC/MCP/IP
adductor pollicis brevis (thenar)
transverse- 3rd MC
oblique- capitate + MC 2+3
CMC ADD
MCP FLEX
CC) ape hand (median nerve injury, only thenar muscle innervated by ulnar nerve)
flexor pollicis brevis
superficial (flexor retinaculum)
deep (cap+trap)
DEEP HEAD IS INNERVATED BY ULNAR NERVE
CMC flex
opponens pollicis
trap to MC
opposition of the thumb
WHAT THENAR MUSCLES ARE NOT INNERVATED BY MEDIAN NERVE
ADDUCTOR POLLICIS
DEEP HEAD OF FLEXOR POLLICIS BREVIS
opponens digiti minimi
hook of ham to the MC
pinky opposition
flexor digiti minimi brevis
hook of ham/flexor ret to base of prox pal
MCP flex
abductor digiti minimi
pisiform to prox phalanx
INSERTS ON DDE WHICH MEANS IT MCP FLEX/PIP/DIP EXT
ALSO, abduct pinky
palmar interossei
Adduct fingers towards middle finger (which is why the muscle is not on the middle finger)
(muscle stays on the finger but on the side closest to the middle- dig 2,4,5)
dorsal interossei
bipennate
ABDUCT THE FINGERS AWAY
MC to next proximal phalanx
2 insert on the middle finger
lumbricals
1/2- MEDIAN
3/4 bipennate- ULNAR
“lumbrical grip”
ONLY MUSCLES THAT INSERT ON THE TENDON OF FDP (CAUSE MCP FLEX/DIP/PIP EXT)
CVAS
MCA OCCLUSION
- most common
- LE >
PCA OCCLUSION
