Random Questions

Question 1

Excitable Cells

Answer 1

Neurons

Question 2

Non-Excitable Cells

Answer 2

Glial Cells

Question 3

Average size of a neuron

Answer 3

0.02-0.04mm

Question 4

True or False: Glial cells can regenerate

Answer 4

True

Question 5

What are nissl bodies?

Answer 5

Large granular bodies made of R.E.R & ribosomes. Produces and releases proteins and amino acids

Question 6

Several dendrites but only one axon

Answer 6

Multipolar Neurons

Question 7

One axon and one dendrite

Answer 7

Bipolar Neurons

Question 8

One process extending from the cell body. One end is the central process (closer to CNS) and the other end is the peripheral process (furthest from the CNS) which has dendrites

Answer 8

Unipolar Neurons

Question 9

What are the 2 classifications of neurons according to their effect on other cells?

Answer 9

1. Excitatory

2. Inhibitory

Question 10

Increases the activity of the cell the impulse is travelling to

Answer 10

Excitatory Neurons

Question 11

Decreases the activity of the cell the impulse is travelling to

Answer 11

Inhibitory Neurons

Question 12

Presynaptic

Answer 12

Carry impulses toward the synapse

Question 13

Postsynaptic

Answer 13

Carry impulses away from the synapse

Question 14

Preganglionic

Answer 14

Carry impulses toward a ganglion

Question 15

Postganglionic

Answer 15

Carry impulses away from a ganglion

Question 16

Afferent

Answer 16

Sensory

Question 17

Function of Afferent Neurons

Answer 17

Transmit nerve impulses toward brain or spinal cord

Question 18

Efferent

Answer 18

Motor

Question 19

Function of Efferent Neurons

Answer 19

Transmit nerve impulses away from the brain or spinal cord

Question 20

Interneurons

Answer 20

Connect afferent and efferent neurons in the CNS. Can serve as signal changers or gatekeepers (changing an excitatory input to an inhibitory output or no output at all)