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Flashcards in Introduction to Neuroscience Deck (15):
1

What is the nervous system divided into?

The central nervous system and the peripheral nervous system

2

What is the central nervous system divided into?

The brain and spinal chord

3

What is the peripheral nervous system divided into?

The autonomic nervous system and the somatic (sensory) nervous system

4

What is the autonomic nervous system divided into?

The parasympathetic division and the sympathetic division

5

How much of the total body weight does the brain weigh and how much blood circulation is involved in supplying it?

2% of body weight and 20% of blood circulation

6

How many nerve cells are in the brain and what are they otherwise known as?

100 billion nerve cells called neurons

7

What are the three components of the neuron?

1. The dendrites
2. The cell body (soma)
3. The axon

8

What does it mean when you say the neuron is "functionally polarized"

Infomation flows in one direction

9

Where does the input of information come into the neuron?

The dendrites

10

Where does the output of information come out of the neuron?

The axon

11

How do neurons communicate?

Via specialised contact sites called synapses

12

What are the four cerebral lobes of the brain?

1. Frontal
2. Parietal
3. Temporal
4. Occipital

13

What are the four primary cortical regions

1. Motor
2. Somato-sensory
3. Auditory
4. Visual

14

What anatomical changes occur to the brain in alzheimers disease?

Grey matter becomes thinner, white matter is lost and the ventricles become enlarged

15

What causes the changes seen in alzheimers disease?

Degeneration of neurons