Lecture 6-10

Question 1

The two major systems involved in coordination (2)

Answer 1

Nervous system
Endocrine system

Question 2

What system is in all animals except sponges?

Answer 2

Nervous system

Question 3

What are the three major roles of the nervous system?

Answer 3

Collects information
Process & integrate information
Transmit information

Question 4

The three main roles of the nervous system depend on ___

Answer 4

Bioelctricity

Question 5

Neurons

Answer 5

Generate bioelectric signals and are sued to transmit info to other cells

Question 6

Glial cells

Answer 6

Support cells that assist neuronal signaling, produce cerebrospinal fluid, and maintain environment around neurons

Question 7

Axon hillock

Answer 7

Spike initiation zone

Question 8

Neuronal structure function, slide 6??

Question 9

Neuron

Answer 9

Individual cell

Question 10

Nerve

Answer 10

a bundle of axons (a few to millions)

Question 11

Axon

Answer 11

Also called a nerve fiber

Question 12

Synapse

Answer 12

Connection between axon terminal & effector cell

Question 13

Effector

Answer 13

Can be a neuron, muscle cell, any other cell

Question 14

Where does bioelectricity happen?

Answer 14

At the membrane

Question 15

Potential

Answer 15

Difference in electrical charge between regions
measured in volts (V) or millivolts (mV)

Question 16

Current

Answer 16

Flow of electrical charge between regions
Opposites attract, like repels

Question 17

Membrane Potential

Answer 17

Unequal charge distribution across a cell membrane

Question 18

All living cells are electrically ___

Answer 18

Polarized