Chapter 8 Flashcards Preview

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Flashcards in Chapter 8 Deck (13):
1

Name the two parts of a synapse

axon terminal of presynaptic cell
the membrane of the postsynaptic cell

2

what do electrical signals use to pass signals from one cell to another?

pores of gap junction proteins

3

What do chemical synapses use to pass signals?

Neurocrine molecules

4

What do nuerotransmitters and neuromodulators act as?

Paracrine Signals

5

Which neurocrine molecules elicits a fast response?

Neurotransmitter

6

What are the two categories of Neurocrine receptors?

Ligand gated ion channels, G Protein Coupled Receptors

7

which receptors are called ionotropic receptors?

Ligand Gated Ion Channels

8

GPCRs are also known as what?

Metabotropic Receptors

9

Name the two type of cholinergic receptors

Nicotinic, Muscarinic

10

What ligand binds to cholinergic Receptors?

acetylcholine

11

Where are nuerotransmitters released?

From seminal Vesicles in the presynaptic cell

12

Describe the steps of neurotransmitter release

caclium channels open in response to ap
calcium moves into the cell
calcium initiates exocytosis
neurotransmitters in seminal vesicles are released into the synaptic cleft
neurotransmitters bind to membrane receptors in postsynaptic cell

13

Describe the events of an action potential.

1: Resting Membrane Potential
2: depolarizing stimulus
3: Voltage Gated K and Na channels open at threshold
4: Cell Depolarizes further
5: Na Channels Close. K channels open
6: K leaves cell
7: Cell hyperpolarizes
8: Voltage gated K channels close.