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Flashcards in cells Deck (43)
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1

there are _ layers of the cortex

6

2

precentral gyrus

primary motor area of the brain

3

area 4 fxn

precentral gyrus, primary somatomotor

4

areas 3,1,2 fxn

primary somatosensory; crude touch etc.

5

when you look at a picture, what should you identify first?

Left, Right orientation

6

reticular theory

all of nervous system is connected together, and there are no synapses

7

neuron theory/doctrine

there ARE synapses in nervous system

8

nucleus definition

group of cells in CNS with similar properties; if you were to stain them, they would have similar size, shape, neurotransmitters, and would have a similar fxn

9

tract definition

bundles of axons running through the brain; most common way of describing bundles of axons; can be any size

10

glial cell definition

"hold the whole thing together". whatever

11

column definition

also refers to bundles of axons

12

2 names for layers

laminae, strata; usually refer to these by the layer number

13

fasiculus definition

is a BIG bundle of axons

14

lemniscus definition

not really a big difference between this and a fasiculata except that this word means ribbon. the orientation of the axon bundle may twist and turn as it goes through the nervous system

15

feniculus definition

a BIG fasiculus

16

pedunces

a tract that connects (three connections) to other parts of the brain; its a pillar.

17

clarkes column

a column of cell bodies aka a long nucleus

18

dorsal columns are

White matter (WM) tracts

19

four types of neurons

multi, bi, pseudo, uni; polar

20

most common type of neuron shape. location?

multipolar; ANS, interneurons, pyramidal cells of cerebral cortex, purkinje of cbellar cortex

21

processes examples

axons, collaterals, and dendrites. anything that comes off of a neuron

22

bipolar cells

can be embryonic and can change into multipolar ones

23

dont ever think of a neuron as ___

one neuron with one axon and one dendrite that synapses in one spot. it NEVER does that its a huge whore. it likes to be all up in everyones business

24

perkinge cell

typical multipolar; one of the largest

25

pyramidal cell

long axon that may go for several feet; multipolar

26

dendritic spines

on multipolar cells

27

locale of bipolar cell

eye

28

layer 5 fxn

output layer; these are pyramidal cells that send info to other places

29

motor unit

a single neuron and all the muscle cells that it attaches to

30

embryonic origin of schwaan

neural crest cells