Midterm - General Flashcards
Left hemisphere vs right hemisphere
Left - language dominance
Right - emotions, visual spatial skills, musical skills, attention
CNS
Brain (cerebrum, Brainstem, cerebellum) and spinal cord
Low to high - spinal cord, Brainstem, cerebral cortex
Decussation
Crossing of incoming and outgoing fibers at midline
Lesions occurring above = contralateral
Lesions occurring below = ipsilateral
Sensory vs Motor fibers
Sensory - afferent; pain, fine touch and temperature
Motor - efferent; pathways to various limbs
Plasticity
Brains ability to change as a result of experience
Gyrus vs Sulcus vs Fissure
Gyrus - crest of a fold
Sulcus - groove or valley
Fissure - deep sulcus
PNS
Cranial and spinal nerves
Convey pain, temperature, and touch
Autonomic nervous system
Independent system
Controls smooth muscles of organs and glands
Corpus callosum
Largest Interhemispheric commissural fiber bundle
Interconnects cerebral hemispheres
Retrocochlear mechanism
Transmits signals from hair cells to Brainstem cochlear nuclear complex
What is the Thalamic relay center for audition
Medial geniculate body
External ear
Pina
EAM
Tympanic membrane
Collects and channels sounds
Middle ear
Air filled cavity containing ossicles and Eustachian tube
Regulates sound transmission
Inner ear
Audition and equilibrium
Contains the cochlea - sensory organ of corti
Organizational principles of the brain
Interconnectivity Centrality Hierarchy Laterality Functional networking Topographical representation Plasticity of the brain Culturally neutral brain
