head and neck Flashcards
how many cranial bones total
8
sphenoid bone
butterfly shape
what does temporal bone contain
articular fossa for the TMJ
mandible
only freely movable bone of the skull
mandibular foramen
passage for the inferior alveolar nerve and artery
vomer
thin, flat trapezoid shaped single facial bone located in the midline
muscle of mastication
4 muscles: masseter, medial pterygoid, temporalis and lateral pterygoid
muscle of mastication
all are innervated by V cranial nerve
extrinsic tongue muscles
styloglossus: retract the tongue
genioglossus: stick the tongue out
hyoglossus : depress the tongue
what makes the floor of the mouth
mylohyoid
component of blood
90% water, 10% protein
erythrocytes
RBC, contain hemoglobin
leukocyte
WBC, against infectious
neutrophils
most numerous WBC, 1st line of defense during infection by phagocytosis
platelets
clot the blood
artery
carries the blood AWAY from the heart
peripheral nervous system
motor (efferent) : sends info to muscles and glands
sensory (afferent): gather infos
submandibular gland
duct: wharton
parotid gland
duct: stensen
