Exam #1: Intro. Self Study Flashcards Preview

Neuroanatomy > Exam #1: Intro. Self Study > Flashcards

Flashcards in Exam #1: Intro. Self Study Deck (44):
1

What are the five major subdivisions of the brain?

Telencephalon
Diencephalon
Mesencephalon
Metencephalon
Myelencephalon

2

What is the telencephalon?

Cerebral hemispheres

3

What is the diencephalon?

Epithalamus
Thalamus
Hypothalamus
Subthalamus

4

What is the mesencephalon?

Cerebral peduncles
- Tegmentum
- Crus cerebri

Tectum= superior & inferior colliculi

5

What is the metencephalon?

Pons
Cerebellum

6

What is the myelencephalon?

Medulla oblongata

7

What is the brainstem?

Medulla oblongata
Mesencephalon
Pons

8

How do you know the difference between gray & white matter in the spinal cord?

Gray= central butterfly
White= what surrounds the butterfly

9

What is the difference between ventral & dorsal in the spinal cord?

Dorsal= toward the spinous processes
Ventral= toward the vertebral bodies

Dorsal= tips of the wings of the butterfly

10

Functionally, what is the difference between dorsal & ventral in the spinal cord?

Dorsal= sensory
Ventral= motor

11

What is contained in the ventral horn of the spinal cord?

Cell bodies of neurons involved in somatic motor function

12

What is contained in the lateral horn of the spinal cord?

Cell bodies of "preganglionic" neurons involved in the SNS & PNS

13

What is contained in the dorsal horn of the spinal cord?

Central processes of unipolar neurons of DRG

14

What is the difference between a protoplasmic astrocyte & a fibrous astrocyte?

Location:

Protoplasmic= gray matter
Fibrous= white matter

15

What is an ependymal cell?

Cells that form the simple cuboidal epithelium that lines the central canal of the spinal cord & ventricles of the brain

16

Generally, how does the organization of the autonomic nervous system differ from somatic?

Somatic= 1 neuron directly innervating tissue

Autonomic= 2 neurons (pre-synaptic & post-synaptic)

17

How does the organization of the SNS differ from the PNS?

SNS= short pre-synaptic & long post-synpatic

PNS= long pre-synaptic & short post-synpatic

18

Where are the cell bodies of the presynaptic SNS neurons located?

Lateral horn of T1-L2

19

Where are the cell bodies of the presynaptic PNS neurons located?

Brain (axons are cranial nerves III, VII, IX, & X)

Lateral horn of the sacral spinal cord (S2-4)

20

Define arcuate.

Arc-like, resembles a segment of a circle

21

Define column.

A large bundle of ascending or descending nerve fibers composed of several "fasiculi"
- Also called a "funiculus"

22

Define commissure.

Bundle of nerve fibers that runs horizontally

23

Define cortex.

Periphery of a structure i.e. opposite of medulla

24

Define exteroceptor.

Sensory receptor providing information about the external environment to the CNS

25

Define fasiculus.

A bundle of ascending or descending nerve fibers in the CNS

26

Define fiber.

A long thin structure; an axon or collection of axon

27

Define fovea.

Depression or pit

28

Define funiculus.

Also called a column, a large bundle of ascending or descending nerve fibers composed of several "fasiculi"

29

Define glomerulus.

Structure with a spherical configuration

30

Define infundibulum.

Funnel-like structure

31

Define interoreceptor.

A sensory receptor that provides info to the CNS about the internal environment

32

Define lamina.

A layer of specific material such as the layering of nerve cell bodies in the spinal cord

33

Define neurite.

Term for the extensions of neurons i.e. a collective term for dendrites & axons

34

Define neuropil.

Complex of axons, dendrites, and processes of neuroglia that form a web-like network between nerve cell bodies of the gray matter

35

Define nucleus.

A collection of nerve cell bodies

36

Define operculum.

A cover or lid

37

Define peduncle.

Massive collection of nerve fiber bundles that connect the cerebrum & cerebellum to the brainstem

38

Define perikaryon.

Cell body of a neuron

39

Define plexus.

Arrangement of nerve fibers that serve a specific region

40

Define raphe.

A seam or midline structure

41

Define tract.

A bundle of ascending or descending nerve fibers within the CNS

42

What side of the body does the motor cortex control movement of?

Opposite/ contralateral

43

What side of the body does the sensory cortex receive input from?

Opposite/ contralateral

44

What side of the body does the cerebellum control?

Same/ ipsalateral