01a: Neuroanatomy Intro Flashcards Preview

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Flashcards in 01a: Neuroanatomy Intro Deck (23):
1

List the major neuron types, distinguished on basis of (X). Star the most common type.

X = morphology;

1. Bipolar
2. Psudo-unipolar
3. Multipolar*

2

T/F: All signals traveling through neurons are in form of action potentials.

False

3

T/F: Action potentials are not produced in Bipolar Neurons.

True

4

Bipolar neurons are primarily found in which human structure(s)?

1. Retina
2. Olfactory bulb

5

True unipolar neurons are primarily found in which human structure(s)?

None - not found in humans

6

Psuedo-unipolar neurons are primarily found in which human structure(s)?

Sensory ganglia (DRG, CN, etc.)

7

(X) neuron type is specialized for transmission of electrical signals.

X = pseudo-unipolar

8

List pseudo-unipolar neuron process(es) and their associations. Star those with morphology like axon. Put an (M) next to those that are myelinated.

1. Input (peripheral receptor)* (M)
2. Output (CNS)* (M)

9

T/F: Multipolar neurons have multiple axons and dendrites.

False - multiple dendrites, one axon

10

There is/are typically (X) number of NT associated with any one neuron.

X = one

11

List the main excitatory NT.

1. Glutamate
2. Aspartate

12

List the main inhibitory NT.

1. GABA
2. Glycine

13

List anatomical characteristics of excitatory synapse (as seen by EM).

1. Wide cleft
2. (Excitatory)
3. Asymmetric density in pre/post-synaptic membranes
4. Round vesicles

14

List anatomical characteristics of inhibitory synapse (as seen by EM).

1. Pleomorphic (oval) vesicles
2. (Inhibitory)
3. Narrow cleft
4. Symmetric density in pre/post-synaptic membranes

15

Asymmetry in (excitatory/inhibitory) neurons refers to:

Excitatory;

Post-synaptic membrane more dense than pre-synaptic membrane

16

Axons of (X) contribute to named tracts (i.e. corticospinal).

X = relay cells

17

Axons of (X) tend to stay within vicinity of parent cell body. They're typically (excitatory/inhibitory).

X = interneurons

Inhibitory

18

R cerebral hemisphere processes sensory info from (R/L) side of body and produces motor commands to (R/L) side muscles.

L; L

19

R cerebellar lobe processes sensory info from (R/L) side of body.

R

20

Thalamus relays information to:

Cerebral cortex

21

Funiculi refers to:

Area of SC white matter that contains a number of different pathways

22

Fasciculi refers to:

Grouped axons from given nucleus that travel together

23

Lemnisci refers to:

Grouped axons from given nucleus that travel together