Biological Bases of Behavior Part 1: Zoom

Question 1

Neruon is a ___

Answer 1

A brain nerve makes up the networks that allow you to think

Question 2

Parts of a Neuron: Dendrites recieves?

Answer 2

Incoming messages from other neurons and send the message to the soma (also called cell body)

Question 3

Parts of a Neuron: Dendrites send the message to the ?

Answer 3

SOMA(also called cell body)

Question 4

Parts of a Neuron: The soma(cellbody) contains the _____

Answer 4

Nucleus (Nucleus is like heart, make decisions with the heart)

Question 5

Parts of a Neuron: The nucleus is what makes

Answer 5

Decisions

Question 6

Parts of a Neuron: The nucleus decides whether to fire off the message along the longest part of the neuron which is the _______

Answer 6

Axon

Question 7

Parts of a Neuron: The electrical message travels on the _____

Answer 7

Axon

Question 8

Parts of an Axon: Myelin Sheath are fatty tissue that _________ the Axon which in turn _____ ___ the transmission of the message

Answer 8

Myelin Sheath are fatty tissue that INSULATE the Axon which in turn SPEEDS UP the transmission of the message

Question 9

Points between the Myelin Sheath are called ______ ___ _____

Answer 9

Node of Ranvier ( named after the guy who found them)

Question 10

Node of Ranvier allows for message to across Myelin Sheath allowing for it to go _____

Answer 10

jump

faster

Question 11

Inside of Myelin Sheath are ________ cells

Answer 11

Schwann Cells

Question 12

Schwann cells are __________ cells in the nervous system

Answer 12

Non neuronal cells

Question 13

Schwann cells form _______ ____

Answer 13

Myelin Sheath. They generate Myelin

Question 14

Axon Terminal Buds are the ____ _____ of the neuron that releases _____

Answer 14

Axon Terminal Buds are the END POINTS of the neuron that releases NEUROTRANSMITTERS

Question 15

The Axon Terminal Buds release messages into the _______, hence onto the next ______ dendrite

Answer 15

The Axon Terminal Buds release messages into the SYNAPSE hence onto the next NEURON’s DENDRITES

Question 16

When a neuron is not communicating it is in _________ _______

Answer 16

Resting Potential

Question 17

Non communication: Resting potential - When a Neuron is ___ firing, and has a __ charge with mostly potassium ions inside and mostly sodium ions outside

Answer 17

when a neuron is NOT firing, and has a NEGATIVE charge with mostly potasium ions

Question 18

The neuron is _________ when oppisites are away from each other.

Answer 18

POLARIZED

Question 19

Polarization - at resting potential, when sodium is on the outside and potassium is on the inside of a neuron.

Question 20

When the neuron is polarized it is maintaining ________

Answer 20

homeostasis

Question 21

Homeostasis is the _____, _____, ______ state of a neuron

Answer 21

Normal, happy, Resting.

Question 22

Homeostasis is the ability of living organisms to maintain a ______ environment

Answer 22

stable

Question 23

The neuron strives for homeostasis. The state that at which is strives to obtain regurlarly.

Question 24

When a nueron is NOT polarized it is striving to become _______ to maintain _________

Answer 24

When a nueron is NOT polarized it is striving to become POLARIZED to maintain HOMEOSTASIS

Question 25

Action

Question 26

Action Potential is the _______ _____

Answer 26

“nerve impulse”

Question 27

Action Potential is the electrical pulse or _______ that travels the length of the _____

Answer 27

message Axon

Question 28

Action potential _____ travel through the dendrites or the nucleus

Answer 28

DOESN’T. The Nucleus decides to

Question 29

The nucleus _____ to fire or not fire and when it fires the action potential goes down the Axon

Answer 29

DECIDES

Question 30

All-or-nothing principle

Answer 30

When the nucleus decides to fire, it fires down the axon completley (all the way) or not at all. AND the message always has the same intensity on the entire length of the Axon.

Question 31

Depolirization - When opposites are no longer away from each other. This happens with action potential like a domino effect . . . sodium (and cations) rush in, causing potassium (and -) ions to rush out

Question 32

When action potential is traveling/firing down the axon it depolarizes

Question 33

Depolarization happens all the way down the Axon and once it’s done the _________ period takes place.

Answer 33

Refactory Period

Question 34

As depolarization happens the neuron is not in __________

Answer 34

Homeostasis

Question 35

Refractory Period

Answer 35

Period of time after firing that the neuron is focused on resetting, and therefore is unable to fire again.

Question 36

As action potential moves