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Flashcards in Introduction to the Brain Deck (25):
1

What is myelin?

Fatty layer covering axons that helps speed up the conduction of signals.

2

What are oligodendrocytes?

Cells of myelination of the PNS

3

What are Schwann cells?

Cells of myelination of the CNS

4

What is NIssl substance?

They are granules of rough endoplasmic reticulum. They are areas where the proteins and neurotransmitters of the nerves are synthesized.

5

Where do sensory neurons generally arise from?

Dorsal Horn of the Spinal Cord

6

Where do motor neurons generally arise from?

Ventral Horn of the Spinal Cord

7

Where do the preganglionic autonomic neurons generally arise from?

Lateral Horn or IML (Intermedlateral)

8

Where can you find unipolar neurons?

Retina

9

What are glia?

They are the connective tissue of the CNS

10

What are the components of the CNS?

Brain and the Spinal Cord

11

Where is the ventral side of the brain located?

Always inferior

12

Where is the dorsal side of the spinal cord?

Towards your back

13

What are the lobes of the brain?

Frontal
Parietal
Temporal
Occipital

14

What are the general functions of the frontal lobe?

Motor

15

What are the general functions of the parietal lobe?

Sensory

16

What are the general functions of the temporal lobe?

Speech/Auditory

17

What are the general functions of the occipital lobe?

Vision

18

What are the gyrus and sulcus of the brain?

Gyrus are the hills.
Sulcus are the valleys.

19

What is the importance of the calcarine sulcus?

It is the concentration and vision center of the occipital lobe.

20

What is included in the diencephalon?

Thalamus and Hypothalamus

21

What is next to the lateral ventricle?

Caudate Nucleus

22

What are components of the basal ganglia?

Putamen
Globus Pallidus
Caudate Nucleus

23

What part of the brain is the most cell dense?

Cerebellum

24

What are the corpora quadra gemini?

Superior and Inferior Colliculi

25

What are the parts of the brainstem?

Medulla
Pons
Midbrain