12. Head,neck, & TMJ Flashcards
What does scalp stand for? what’s seen in each layer?
Skin- hair follicles & sebaceous glands
Connective tissue- major arteries & veins
Aponeurosis- called “galea aponeurotica”
Loose areolar tissue- houses the “emissary veins”
Periosteum/pericranium- nutrition for the scalp
layer of scalp called the dangerous layer
Loose areolar veins
what are the 3 ear ossicles
Hammer
Anvil
Stirrups
Other names in the same order
Malleus
Incus
Stapes
what are the 8 cranial bones
Parietal (2)
Temporal (2)
Frontal
Occipital
Ethmoid
Sphenoid
What are the 14 facial bones
Nasal
Inferior nasal conchae
Lacrimal
Palatine
Zygomatic
Vomer (1)
Maxilla
Mandible (1)
Posterior fontanelle closes at what age?
9-12 mos/ 1y/o
Anterior fontanelle closes at what age?
18-24mos/ 2y/o
A closed anterior fontanelle is called___
Bregma
A closed posterior fontanelle is called___
lambda
this is a depression at the root of the nose
nasion
this is the groove in between the nose and the upper lip
philtrum
these are creases in between the nose & mouth
nasolabial folds
this is the thinnest portion of the lateral skull
pterion
what artery is found beneath the pterion
meningeal artery
this is another term for external occipital protuberance
Inion or bum of knowledge
this is the skin in between the superciliary ridges
glabella
action of occipitofrontalis muscle, what expression does it do?
raising of eyebrows; surprise
action of corrugator supercilii, what expression
approximates the eyebrows, frowning
action of procerus, what expresison
wrinkles the nose; distaste/ disgust
action of zygomaticus major
smiling
action of zygomaticus minor
accessory muscle for smiling; protrude the upper lip
action of levator labii superioris
elevate upper lip
action of levator angular oris, what expression
elevates the angle of mouth; sneering
action/expression of risorius
grimace
action of buccinator
blowing, sucking, whistling, puffing of cheeks
action of orbicularis oris
closes lips, muscle for kissing
action of mentalis
pouting/ protrusion of lower lip
action of platysma; other term
depresses the angle of the mouth
EGAD muscle
review notes on muscles of the eye
green notebook
Structure that passes through cribriform plate
CN1
Structure that passes through optic canal
CN2
Structure that passes through superior orbital fissure
CN 3,4,5vi,6
Structure that passes through foramen rotundum
CN5v2
Structure that passes through foramen ovale
CN5v3
Structure that passes through internal auditory meatus
CN7.8
Structure that passes through jugular foramen
CN 9,10,11
Structure that passes through hypoglossal canal
CN 12
Structure that passes through foramen magnum
CN 11, vertebral arteries, spinal cord, site where medulla oblongata sits
Structure that passes through foramen Lacerum
Internal carotid artery
Structure that passes through foramen spinosum
medial meningeal artery
ligament that attaches hyoid to the skull
stylohyoid ligament
Suprahyoid muscles
Digastric (dual innervation)
Mylohyoid
Stylohyoid
Geniohyoid
infrahyoid muscles
Thyrohyoid
Omohyoid
Sternohyoid
Sternothyroid
of all infrahyoid muscles, which muscle is no innervated by the ansacervicales
Thyrohyoid, innervated by C1
CPP of TMJ jt
clenched teeth
capsular pattern of tmj jt
limitation in mouth opening
TMJ
what happens during the 1st 26mm of mouth opening
bilat ant rotation occurs, followed by bilat ant translation
normal value of mouth opening
35-55mm
knuckle test:
3finger breadths= normal
2 finger breadths= functional
TMJ
what happens during mouth closing; normal value
bilat post translation, followed by bilat post rotation; 0 deg
TMJ
what happens during protrusion; normal value
bilat ant translation; 3-6mm or <7 mm
TMJ
what happens during retrusion; normal value
bilat post translation; 3-4mm
TMJ
what happens during retrusion; normal value
TMJ what happens during excursion/ lat dev; normal valua
ipsi rot, contra translation; 10-15mm
primary muscles for mastication
Temporalis
Internal pterygoid
Masseter
External pterygoid
muscles used to elevate TMJ
Temporalis
Internal pterygoid
Masseter
muscles used to depress TMJ
External pterygoid
Muscles used for protrusion
Internal pterygoid
Masseter
External pterygoid
Muscles used for retrusion
Temporalis (post. fibers)
Muscles used for excursion
Internal pterygoid
External pterygoid