Synapses, Neurotransmitters, and Receptors

Question 1

types of synapses

Answer 1

1. CHEMICAL-chemical indirectly carries electrical signal to post-synaptic cell; slower; there is a actual physical space between pre and post synaptic neuron;
2. ELECTRICAL-electrical signal is carried via gap junction directly from pre to post synaptic neuron; occurs faster; there is not a physical space that separates pre and post synaptic cell

Question 2

2 classes of neurotransmitters in neural signaling

Answer 2

1. small molecule ( made in synaptic terminal of pre-synaptic neuron)
2. peptide ( made in cell body/soma of pre-synpatic neuron)

Question 3

2 classes of receptors in neural signaling

Answer 3

1. ionic ( ligand-gated ion channels)

2. metbotropic ( activate second messenger systems)

Question 4

glutamate

Answer 4

excitatory, small molecule neurotransmitter in brain

mediates fast, excitatory signaling in CNS

Question 5

GABA

Answer 5

inhibitory, small molecule neurotransmitter in brain

Question 6

Acteylcholine

Answer 6

a neurotransmitter primarily used in PNS ;

has two types of receptors: 1) musarianc and 2) cholgeric

Question 7

Norepinephrine

Answer 7

major neurotransmitter in SNS

Question 8

Where in brain is dopamine made?

Answer 8

Substantia nigra and ventral tegmental area

Question 9

Where is norepinephrine made?

Answer 9

locus coeruleus

Question 10

Where is serotonin made?

Answer 10

raphe nuclei