Midterm General Flashcards
Occipitofrontalis
Raising eyebrows
Orbicularis oculi
closing one eye/winking
Buccinator
blowing cheeks out
Zygomaticus major
lifting lips up
Platysma
stretching neck skin
Orbicularis Oris
Pursing lips
CN I
Sensory
Exits foramina in cribriform plate of ethmoid bone
Smell
CN II
Sensory
Exits optic canal
vision
CN III
Motor
Superior Orbital Fissure
Motor to superior rectus, inferior rectus, medial rectus, inferior obliqye, levator palpebrae, cilary muscles, sphincter pupilae
CN IV
Motor
Superior orbital fissure
motor to superior oblique muscle
CN V, V1
Sensory
Superior Orbital Exit
Sensation from cornea, forehead, scalp, eyelids, nose, nasal cavity, sinuses
CN V, V2
Sensory
Foramen Rotundum
sensation from maxilla skin, teeth, nose, sinuses, palate
CN V, V3
Both
Foramen Ovale
Sensation from chin, lower lip, side of head, teeth, TMJ, mouth, 2/3 tongue
Motor of chewing, mylohyoid, ant. digastric, tensor veli palatini, tensor tympani
CN VI
motor
superior orbital fissure
motor to lateral rectus
CN VII
both
internal auditory canal, facial canal, stylomastoid foramen
sensory: skin of ears, taste 2/3 tongue/palate
motor: facial expression, stylohyoid, p. digastric, salivary glands, lacrimal gland, glands of nose/palate
CN VIII
sensory
internal auditory canal
orientation & hearing
CN IX
both
jugular foramen
sensory: taste 1/3 tongue, pharynx, middle ear
motor: swallowing muscle, parotid gland
CN X
both
jugular foramen
sensory: pharynx, larynx, reflex, lungs, heart, GI tract
motor: pharynx, larynx, GI tract, heart, trachea
CN XI
motor
jugular foramen
SCM and trapezius
CN XII
motor
hypoglossal canal
motor of tongue
Eyesight physics
pupils/gaze are parallel
orbits are NOT parallel, angled outwards
Axis/planes of eye
A-P axis = lateral/medial rotation
Transverse axis = Elevation/depression
Vertical axis = abduction/adduction
TMJ ligaments
lateral ligament = ant displacement
stylomandibular = post displacement
TMJ
synovial joint
technically 2 joints
Temporal + disk
Mandible + disk
Temporal part of TMJ
does protraction/glide
late opening
upper joint
Mandible part of TMJ
rolls
lower joint
first part of opening
Soft palate
barrier between nasal and oral cavities
oral cavity proper
portion of mouth above the tongue
Hard palate
bone portion of the mouth that separates the oral cavity and nasal cavity
Tongue muscles
intrinsics = inside the tongue
extrinsic = outside the tongue
Genioglossus
Extrinsic of tongue
Chin
Palatoglossus
Extrinsic of tongue
palate
Styloglossus
Extrinsic of tongue
styloid process
Hyoglossus
Extrinsic of tongue
hyoid bone
Submandibular gland
underneath the mandible
Parotid gland
along the ramus of the mandible
Parts of pharynx
Nasopharynx
Oropharynx
Laryngopharynx
Connects to esophagus
Larynx
shortens to help widen the pharynx to allow more water/food in
Hyoid bone is at the same level as
C3
Where does the brachial plexus come through?
anterior and middle scalene
Parts of ear
Outer
Middle
Inner
Middle ear
Incus, Malleus, Stapes bones
Ear drum
Inner Ear
Semicircular canals: balance
Cochlea: hearing
Saccule, Utricle = vestibular portions
Semicircular Canals
fluid within allows you to know where you are at in space
Thoracic Cavity
truncated cone
narrowest superior = ribs slant down
circumference increases inferiorly
maximum size at abdominal
floor made up by thoracic diaphragm
Thoracic Cage includes
ribs
costal cartilages
supported by sternum and thoracic vertebrae
lower portion protects abdominal viscera
bony portion of thoracic wall
Thorax
region between neck and abdomen
contains organs of respiratory & cardiovascular system
3 main spaces = mediastinum, right & left pulmonary
Thoracic Wall
bony portion is thoracic cage
muscles that extend between ribs
skin, subcutaneous tissue, muscles, fascia
Thoracic Cage purpose
protection of vital thoracic and abdominal organs from ext forces
resist negative internal pressures
support for weight of upper limbs
attachment of muscles to maintain UE position
attachment of muscles of abdomen, neck, back, respiration
External intercostal does
inspiration
Internal intercostal does
forced expiration
Abdominal Walls
contract to increase area
distend for accommodation
contains peritoneum
Peritoneum
Serous memnrame
reflects and continues onto abdominal viscera
creates sac and peritoneal cavity
Abdominal Cavity
forms upper part of abdominopelvic cavity
border is pelvic area
extends to 4th intercostal space
location of most digestive organs, part of urogenital
muscles relative to Rectus abdominis
External oblique = anterior
Transversus abdominus = posterior
Internal oblique = goes ant and post
Rotating to the left
R external oblique
L internal oblique
Rotating to Right
L external oblique
R internal oblique
After arcuate line…
all muscles (obliques & transverse) go ANTERIOR to rectus abdominus
Inguinal Canal
Aponeurosis of external oblique becomes the inguinal ligament
both create inguinal canal
parallel and superior to medial half of ligament
contains spermatic cord and round lig of uterus
Inguinal Ligament
dense band
inferior aspect of external oblique
most fibers to pubic tubercle
Deep internal ring
entrance to inguinal canal
contains round ligament of uterus & spermatic cord
Superficial external ring
exit for structures identified above from deep ring and illio-inguinal ligament
