Final prep (incomplete)

Cellular And Molecular Biology 245 with Auerbach at Rutgers University - New Brunswick/Piscataway

About this deck

By: Christina Peteraf
Textbook:

Neuroscience: Exploring the Brain
Created: 2010-12-22
Size: 32 flashcards
Views: 39

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Midbrain Tectum

center for reflex control of eye and head movements

Corticospinal tract

fine, fractioned control

(lateral)

rubrospinal tract

gross movements of hands/ arms

groups of motor neurons and interneurons

RED NUCLEUS controls crawling in babies and swinging of hands while walking

Vestibulospinal tract

balance and posture

Tectospinal tract

coordination of head-eye movement

Near -sighted

focal point in front of retina (MYOPIA)

concave lens fixes this

Far-Sighted

focal point behind retina (Hyperopia)

convex lens (more curvature) fixes this

effect of glutamate

ganglion cells are ALWAYS depolarized by glutamate

on-center bipolar cells are hyperpolarized

off-center bipolar cells are depolarized

P-type and K-type ganglion cells

p- red green color oponents

k- blue yellow opponents

P (parvocellular ) cells provide visual acuity and color perception

m type ganglion cells

motion perception

Primary visual pathway (after ganglion cells)

optic nerve --> optic chiasm --> optic tract--> LGN --> primary visual cortex

retinal projections to LGN

segregated

1 and 2 are M type

3-6 are P type

alternating contralateral/ipsilateral

Area IT

Object and FACE recognition

prosopagnosia

inability to recognize faces

Endolymph

HIGH K+ concentration

stria vascularis

contains K+ pumps that keep concentration of potassium HIGH in endolymph

Auditory pathway

Ventral Cochlear ucleus--> SUPERIOR OLIVE--> INFERIOR COLLICULUS-->MGN--> Auditory Cortex

MSO, LSO

Medial- interaural time difference

Lateral- interaural intensity difference

Dermatone

single spinal nerveand the area of skin innervated

Dorsal Column Medial Lemniscal pathway

fine touch sensations

Trigeminal pathway

Touch- face

C fibers

unmyelinated, burning

A(delta) fibers

FIRST- fast

myelinated, sharp pain

hyperalgesia

substance P

swelling of blood vessels

histamine release

ITCH

spinothalamic pain-temperature pathway

crossover at dorsal root through medulla

pain relief

PAG and endorphin/enkephalin

PMA and SMA

premotor and supplementary motor areas-

PMA active with intention to perform movement

SMA active when motor sequences are preformed from memory

GPi

inhibitory effect on VA/VL of thalamus

Direct Pathway

disinhibits Thalamus

Indirect pathway

inhibits extraneous movements

disinhibits subthalamic nucleus- Gpi is able to control inhibition

Parkinsons

increased inhibition of VA/VL

Treatment: electrodes into SN; L DOPA

Huntingtons Disease

loss of GABAergic neurons to GPe

increased output from VL

About this deck

By: Christina Peteraf
Textbook:

Neuroscience: Exploring the Brain
Created: 2010-12-22
Size: 32 flashcards
Views: 39

About StudyBlue

“Simply amazing. The flash cards are smooth, there are many different types of studying tools, and there is a great search engine. I praise you on the awesomeness.”
Dennis