Chapter 11 Part 3

Question 1

Presynaptic neurons send __

Postsynaptic neurons send __

Answer 1

Presynaptic: send impulses toward synapse (send information)
Postsynaptic: transmit electrical signal away from synapse (receive information)

Question 2

4 types of circuits

Answer 2

Diverging
Converging
Reverberating
Parallel after-discharge

Question 3

Diverging circuit has

Answer 3

One input, many outputs

Christmas tree shaped

Question 4

Converging circuit has

Answer 4

Many inputs, one output

Looks like +

Question 5

Reverberating circuit:

Answer 5

Signal travels through chain of neurons, each feeding back to previous neuron
(Looks like chain)

Question 6

Parallel after-discharge circuit:

Answer 6

Signal stimulates neurons arranged in parallel lines that all go to one output cell
(Looks like merging traffic)

Question 7

Axodendritic connection:

Answer 7

Between axon terminals of one neuron and the dendrites of other neurons

(Look like they’re holding hands)

Question 8

Axosomatic connection:

Answer 8

Between axon terminals of one neuron and soma (cell body) of other neurons
(Axon goes to middle of cell)

Question 9

Most common type of synapse

Answer 9

Chemical synapse

Question 10

Na+ influx greater than K+ efflux results in

Answer 10

EPSP

Question 11

Two types of summations:

Answer 11

Temporal

Spatial

Question 12

Temporal summation:

Answer 12

One or more presynaptic neurons rapid-fire impulses

Impulses add on top of first impulse