Volume IV

Question 1

Neurogenesis

Answer 1

The creation of new neurons. Observed in the hippocampus and caudate nucleus. p1

Question 2

Golgi complex

Answer 2

System of membranes that prepare neurotransmitters and other substances for secretion. p2

Question 3

Conduction

Answer 3

Messages within a neuron are transmitted from a neuron’s dendrites to the end of it’s axon through this electrical process. p2

Question 4

Depolarization

Answer 4

interior of cell is negatively charged in relation to outside of the cell - when sufficient stimulation has been received from other cells, sodium channels in the cell’s membrane open, which allows positively charged sodium ions to enter the cell and create this state. p2

Question 5

Action Potential

Answer 5

What depolarization triggers - an electrical impulse that travels quickly through the cell. p2

Question 6

Repolarization

Answer 6

follows depolarization - sodium channels close and potassium channels open, allowing positively charged potassium ions to leave the cell. p2

Question 7

Acetylcholine

Answer 7

ACh found throughout the peripheral and central nervous systems and acts on two different types of receptors 0 muscarinic and nicotinic.

In the peripheral nervous system, it is released into the neuromuscular junction where it causes muscles to contract. Myasthenia gravis is an autoimmune disorder that attacks ACh receptors, resulting in profound weakness.

In the central nervous system,