An Introduction To Resting Membrae Potential, Ionic Basis Of APs, Generation & Propagation

Question 1

White matter in the brain

Answer 1

Axon surrounded by the myelin
Structure of the nerve

Question 2

Two main types of cell in the CNS

Answer 2

Neurons
Non-Neuronal cells

Question 3

Non-neuronal cells of the CNS

Answer 3

Astrocytes
Oligodendrocytes
Microglial
Ependymal cells

Question 4

Oligodendrocytes

Answer 4

Form the myelin sheath around axons in the CNS

Question 5

Astrocytes

Answer 5

Supportive function for CNS neurons
Contribute to blood bain barrier

Question 6

Microglial

Answer 6

Phagocytic action in the CNS
Essentially the immune system of the brain, necessary due to the blood-brain barrier

Question 7

Ependymal cells

Answer 7

Epithelial cells in the fluid-filled spaces of the brain and central canal of the spinal cord
Possess micro villi, which help circulate CSF around the CNS

Question 8

Anatomy of a (spinal motor) neuron

Answer 8

Presynaptic terminals - 80% dendritic; 20% somatic
Axon - transmits information to other neurons or non-neuronal cells
Dendrites - receive information from other neurons (convergence)

Question 9

How many neurons are in the CNS?

Answer 9

Ove 100 billion

Question 10

Axon hillock

Answer 10

Electro-microscopy structure

Question 11

Types of cells, types of signalling, types of contact

Answer 11

Axoendritic
Axosomatic
Axoaxnoic

Question 12

Types of neurotransmitters the synapse can release

Answer 12

Amino acids
Amines
Peptides