Midterm Flashcards
motor homunculus
body parts that require more fine motor movements are represented by larger portions
sensory homunculus
areas that receive sensory input from more sensitive parts of the body are represented by larger portions
broadman areas
cortex is divided into 47 different areas based on different thickness shape and reflects specialized functions
dendrites
receives neuronal impulses carrying them toward cell body
axon
transmits neuronal impulses away from cell body
soma
Integrates incoming signals and generates an action potential
myelin sheath
sheath surrounding axons
helps neural transmission speed
midsagittal plane
vertical
divides into left and right hemispheres
CNS
brain and spinal cord
neural circuits
network of interconnected neurons that work together to process information and generate a specific response
thalamus location and function
location: between cerebral cortex above brain stem
relay station for information
cerebellum location and function
location: back of brain beneath occipital lobe behind brainstem
function: motor control, balance, muscle tone, cognitive/emotional processing
fredrich ataxia
genetic disorder affecting nervous system
hydrocephalus
excess fluid in the brain
cortical neurogenesis
formation of new neurons in the cortex
multiple sclerosis
autoimmune disease that affects the central nervous system
dysdiadochokinesia
impaired ability to perform rapid alternating movements
ipsilateral
same side of body
contralateral
opposite sides of body
2 neurotransmitters
epinephrine
norepinephrine
epinephrine
excites heart
fight or flight response
norepinephrine
attention
alertness
mood
