ANAT 135 Exam III study guide

ANAT 135 Exam III study guide - The Skull: Bones: •...

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The Skull: Bones : frontal parietal (2) temporal (2) occipital ethmoid spheniod Facial bones: zygomatic (2) nasal (2) mandible palatine lacrimal (2) inferior nasal concha (2) vomer maxilla (2) Sutures: sagittal- between parietal bones coronal- between parietal and frontal lamboidal- between parietal and temporal squamosal- between occipital and parietal Landmarks: frontal crest (inside skull on frontal bone) crista galli and cribiform plate (ethmoid) = where CN I enters the skull; attachment for the dura moder sella turica (sphenoid) = saddle-shaped ditch in middle cranial fossa where the pituitary gland sits cranial fossae: sit inside of the skull to help support it 1) anterior (frontal, ethmoid, sphenoid) 2) middle (sphenoid, temporal) 3) posterior (temporal, occipital) zygomatic arch (zygomatic/temporal) madibular fossa (temporal) = where the condylar process articulates with rest of skull styloid process (temporal): stylohyoid attachment mastoid process (temporal)
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occipital condyle (occipital)= where skull articulates with vertebral column at the superior faucet of atlas inion (external occipital protuberance) calvaria = top of the skull (skull cap) Sinuses: frontal (above the eyes) ethmoid (medial to eyes) sphenoid (lateral side of skull—above mandible articulation) maxillary (each side of nose—biggest) Important Foramina (and what goes thru them) optic foramen -CN II = optic nerve Superior orbital fissure -CN III = oculomotor n. -CN IV = Trochlear -CN V 1 = ophthalmic -CN VI = abducens Inferior orbital fissure Foramen ovale -CN V 3 = mandibular Foramen rotundum -CN V 2 = maxillary Foramen spinosum Foramen lacerum Supra and Infraorbital foramina Carotid canal -carotid arteries/veins??? Foramen Magnum = where the vertebral artery enters the skull Jugular Foramen -CN IX = Glossalpharengyl n. -CN X = Vegus n. -CN XI = Spinal Accessory n. Internal Auditory Meatus -CN VII = Facial n. -CN VIII = Vestibulocochlear n. External Auditory Mandible: Condyloid process Coronoid process Ramus, angle, body Mandibular foramen (2) = CN 5 passes thru here
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Mental foramen (2) = where V3 goes passes thru Geniod tubricle (internal surface of the body of the mandible) The Brain I. Forebrain Telencephalon (cerebrum) 2 cerebral hemispheres, connected by the corpus callosum Layers: 1.) Gray matter (cerebral cortex): superficial – composed of nerve cells 2.) White matter: deep- contains fiver pathways (axons) = ascending and descending tracts 3.) More gray matter 5 cerebral lobes: 1.) frontal lobe= motor (precentral gyrus) and premotor areas 2.) parietal lobe= sensory (postcentral gyrus) and association areas 3.) temporal= auditory areas 4.) occipital= visual and association areas 5.) insular= deep in brain
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ANAT 135 Exam III study guide - The Skull: Bones: •...

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