Neruons

Question 1

Neuron

Answer 1

Specialized cell that carry’s messages throughout the nervous system

Question 2

Types of neurons

Answer 2

1. Afferent (sensory) : sends senses to the brain + spinal cord (CNS)
2. Interneurons: “in between” neurons in CNS - interaction between neurons (receive/process)
3. Efferent (motor) : CNS to glands and muscles

Question 3

Steps that happen when you catch a ball….

Answer 3

1. Detect with afferent vision neurons - the ball coming towards you
2. Activation of interneurons in the CNS - processing, “the ball is coming towards me, I have to catch it”
3. Activation of motor(efferent) neurons, communication to muscles, = catches the ball

Question 4

Components of the neurons (6)

Answer 4

1. Cell body
2. Dendrites
3. Axon
4. Myelin sheath
   — 5. Glial Cells
5. Terminal branch (buttons)

Question 5

Glial Cells (3)

Answer 5

1. Glue that holds neurons together
2. Removes waste
3. Accelerate impulses

Question 6

What is a disease associated with glial cells ?

Answer 6

Multiple Sclerosis: Loss of Glial Cells

Question 7

What neurons are associated with the peripheral nervous system?

Answer 7

Afferent and efferent

Question 8

Cell body

Answer 8

Cells life support center

Question 9

What is the myelin sheath ?

Answer 9

A coat of glial cells

Covers the axon

Question 10

Dendrites

Answer 10

Receives other messages from other neurons

Question 11

Axon

Answer 11

Passes messages away from cell body to other neurons, muscles/glands

Question 12

Synapse structures

Answer 12

1. Axon branches
   — 2. Axon terminal
2. Synaptic vesicles
3. Neurotransmitters
4. Synaptic Gap
5. Reuptake

Question 13

Optic nerve

Answer 13

Pathways filled with afferent and efferent neurons