chapter 2 notes, tuesday-23

Question 1

messengers. in brain there are 100 billion of these

Answer 1

neurons

Question 2

are specialized to receive or transmit

Answer 2

neurons

Question 3

cell body is also called the

Answer 3

soma

Question 4

pick up incoming messages

Answer 4

dendrites

Question 5

each neuron has a single long fiber called the

Answer 5

axon

Question 6

the axon is usually __ to ___ mm long and can be up to __ feet long

Answer 6

1 to 2mm

3 feet

Question 7

at the end of the axon is the

Answer 7

terminal branch

Question 8

at the end of the terminal branches are

Answer 8

terminal buttons

Question 9

the terminal buttons release

Answer 9

neurotransmitters

Question 10

group of axons that are bundled together

Answer 10

nerves

Question 11

controls how fast messages are transmitted and provides insulation to the axon so it doesn’t become interfered

Answer 11

myelin sheath

Question 12

the sensory neurons are also called the ____

achoo

Answer 12

afferent

Question 13

the motor neurons are also called ___

effort

Answer 13

efferent

Question 14

neurons that relate to the sense organ and the brain and spinal cord

Answer 14

sensory (afferent) neurons

Question 15

neurons that go from the spinal cord or brain to muscles and glands

Answer 15

the motor (efferent) neurons

Question 16

type of neuron that carries messages from neuron to neuron

Answer 16

interneurons

Question 17

terminal buttons reach to other

Answer 17

dendrites

Question 18

gap between the terminal buttons and the dendrites

Answer 18

synaptic gap (cleft)

Question 19

terminal buttons and dendrites match up in a ________ system

Answer 19

lock and key

Question 20

process of terminal buttons sucking the neurotransmitters back in

Answer 20

reuptake

Question 21

holds neurons in place

Answer 21

glial cells