Week 1 CNS Objectives 3 Neurotransmitters

Question 1

Acetylcholine

1. secreted by
2. response elicited
3. neurons affected or use

Answer 1

Acetylcholine

1. secreted by pyramidal cells (cerebral cortex)
2. some neurons in the basal nuclei
3. alpha motor neurons
4. Preganglionic neurons of ANS
5. Poste ganglionic neurons of the paraysmpathetic system
6. some postganglionic neurons of the sympathetic system

Usually excitatory

Question 2

Norepinephrine

1. secreted by
2. response elicited
3. neurons affected or use

Answer 2

Many neurons located in the brain stem and hypothalamus

some neurons located in the pons (locus ceruleus)

most postganglionic neurons in the sympatheti
system

can be excitatory or inhibitory

Question 3

Dopamine

1. secreted by
2. response elicited
3. neurons affected or use

Answer 3

secreted by most neurons originating in substantia negri

usually inhibitory

Question 4

Glycine

1. secreted by
2. response elicited
3. neurons affected or use

Answer 4

Secreted by synapses in the spinal cord

always inhibitory

Question 5

GABA

1. secreted by
2. response elicited
3. neurons affected or use

Answer 5

Secreted by areas in the spinal cord and cerebral cortex

always inhibitory

Question 6

Glutamate

1. secreted by
2. response elicited
3. neurons affected or use

Answer 6

Secreted by many sensory pathways entering the CNS

Many areas of the cerebral cortex

always excitatory