01a: Neuroanatomy Intro Flashcards Preview

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

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

A

X = morphology;

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

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

A

False

3
Q

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

A

True

4
Q

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

A
  1. Retina

2. Olfactory bulb

5
Q

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

A

None - not found in humans

6
Q

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

A

Sensory ganglia (DRG, CN, etc.)

7
Q

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

A

X = pseudo-unipolar

8
Q

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

A
  1. Input (peripheral receptor)* (M)

2. Output (CNS)* (M)

9
Q

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

A

False - multiple dendrites, one axon

10
Q

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

A

X = one

11
Q

List the main excitatory NT.

A
  1. Glutamate

2. Aspartate

12
Q

List the main inhibitory NT.

A
  1. GABA

2. Glycine

13
Q

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

A
  1. Wide cleft
  2. (Excitatory)
  3. Asymmetric density in pre/post-synaptic membranes
  4. Round vesicles
14
Q

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

A
  1. Pleomorphic (oval) vesicles
  2. (Inhibitory)
  3. Narrow cleft
  4. Symmetric density in pre/post-synaptic membranes
15
Q

Asymmetry in (excitatory/inhibitory) neurons refers to:

A

Excitatory;

Post-synaptic membrane more dense than pre-synaptic membrane

16
Q

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

A

X = relay cells

17
Q

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

A

X = interneurons

Inhibitory

18
Q

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

A

L; L

19
Q

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

A

R

20
Q

Thalamus relays information to:

A

Cerebral cortex

21
Q

Funiculi refers to:

A

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

22
Q

Fasciculi refers to:

A

Grouped axons from given nucleus that travel together

23
Q

Lemnisci refers to:

A

Grouped axons from given nucleus that travel together