flashcards
masseter action
elevates and protracts mandible
temporalis action
elevates and retracts mandible
lateral pterygoid action
protracts mandible, depresses chin (bilateral), grinding
medial pterygoid action
elevates, protracts (bilateral), grinding (unilateral)
What represents the communication pathway between the infra temporal fossa and the pterygopalatine fossa?
pterygomaxillary fossa
What arteries branch from the third part of the maxillary artery?
posterior superior alveolar, infraorbital, descending palatine, artery to pterygoid canal, pharyngeal artery, sphenopalatine artery
What arteries branch from the first part of the maxillary artery?
deep auricular, anterior tympanic, middle meningeal, accessory meningeal, inferior alveolar
What artery branches from the second part of the maxillary artery?
buccal
What scalenes attach to the first rib?
anterior and middle
What scalenes attach to the second rib?
posterior
The posterior belly of the digastric nerve is derived from the second pharyngeal arch and is innervated by what nerve?
facial
Where does the digastric muscle originate?
anterior belly: digastric fossa of mandible
posterior belly: mastoid notch of temporal bone
What are branches of the medial branch of the external carotid artery?
ascending pharyngeal artery
What are branches of the anterior branch of the external carotid artery?
facial, lingual, superior thyroid
what are branches of the terminal branch of the external carotid artery?
maxillary and superficial temporal
What are the branches of the posterior branch of the external carotid artery?
posterior auricular
What is the thyrohyoid supplied by?
hypoglossal nerve
Sensory to anterior 2/3 of tongue
mandibular branch of the trigeminal nerve
taste from anterior 2/3 of tongue
facial nerve
taste from posterior 1/3 of tongue
glossopharyngeal nerve
sensory from posterior 1/3 of tongue
glossopharyngeal
What glands does the facial nerve supply?
lacrimal, submandibular, sublingual, mucous
What gland does the glossopharyngeal nerve supply?
parotid
What does the occulomotor nerve supply?
extrinsic muscles of the eyes, constrictor pupillae, ciliary muscles
Where are the sensory neurons of CN V located?
semilunar ganglion
Where are the sensory neurons of CN VII located?
geniculate ganglion
Whater are parasympathetic preganglionic fibers to the ciliary ganglion located?
Edinger-Westphal nucleus
What is the spinal accessory nerve located?
nucleus ambiguus
What foramina does the mandibular branch of CN V enter?
ovale
what foramina does the maxillary branch of CN V enter?
rotundum
What foramina does the internal carotid artery enter?
lacerum
What are the motor branches of the facial nerve?
temporal, zygomatic, buccal, mandibular, cervical
What are the branches of the ophthalmic branch of the trigeminal nerve?
frontal, lacrimal, nasocilliary
What are the branches of the maxillary branch of the trigeminal nerve?
infraorbital, anterior superior alveolar, zygomatic, palatine, nasal, posterior superior alveolar
What are the branches of the mandibular branch of the trigeminal nerve?
muscles of mastication, auriculotemporal, inferior alveolar, lingual, buccal
What ligament extends from the styloid process to angle of mandible?
stylomandibular ligament
What ligament extends from the sphenoid spine to mandibular ligament?
sphenomandibular
What ligament extends from the base of the zygomatic process to mandibular neck?
temporomandibular
Anterior border of infra temporal fossa
maxilla
superior border of infra temporal fossa
greater wing of sphenoid
medial border of infra temporal fossa
lateral pterygoid plate
lateral border of infra temporal fossa
coronoid process and ramus of mandible
inferior border of infra temporal fossa
continuous with neck
posterior border of infra temporal fossa
TMJ and styloid process
contents of infratemporal fossa
mandibular nerve maxillary artery medial and lateral pterygoid muscles lower part of temporalis muscle chorda tympani nerve orti ganglion
motor innervation to tongue
hypoglossal
superior border of anterior cervical triangle
mandible
anterior border of anterior cervical triangle
midline of neck
poster border of anterior cervical triangle
sternocleidomastoid
What foramina does the middle meningeal artery exit?
foramen spinosum
What modality are smooth muscles of the gut tract?
general visceral motor
What modality are skeletal muscles?
general somatic motor
What modality are autonomic motor muscles?
general visceral motor
What modality are muscles derived from pharyngeal arches?
special visceral motor
Where are the medullary rhythmicity center, cardiac center and vasomotor center located?
medulla
Lesions bilateral to ventral pons causes what?
consciousness but quadriplegic
Lesions to lateral of pons causes what?
hypotonia
What is the function of the midbrain?
unconscious regulation and coordination of motor activities
Red nucleus function
receives information from cerebellum and cerebral cortex and projects to cerebellum
Cranial nerves VIII, IX, X, XI, and XII are found in which subdivision of the brain?
medulla
Cranial nerves III, IV are found in which subdivisions of the brain?
midbrain
Cranial nerves V, VI and VII are found in which subdivisions of the brain?
pons
What relays information to the primary visual cortex in occipital cortex?
lateral geniculate
What is the function of the ventral posterior nuclei?
general sensations and taste
Epithalamus function
emotional and visceral responses to odors
anterior relay nuclei function
concerned with certain emotions and memory
reticular relay nuclei function
modifies neuronal activity in thalamus
RAS function
modulates sensation of pain, postural reflexes and muscle tone, helps control breathing and heartbeat, regulates consciousness
What group of tracts connects the 2 hemispheres of the brain?
commissural
Where is the myelencephalon found?
in medulla
what does the papez circuit deal with?
emotions
