Nervous System

Question 1

what are the functions of the nervous system?

Answer 1

1. receiving sensory input
2. integrating information
3. controlling muscles and glands
4. maintaining homeostasis
5. establishing and maintaining mental activity

Question 2

two major divisions of nervous sytem

Answer 2

central nervous system
peripheral nervous sytem

Question 3

consists of brain and spinal cord

Answer 3

central nervous system

Question 4

consists of all nervous tissue outside of the CNS including nerves and ganglia

Answer 4

peripheral nervous system

Question 5

the ___ is the communication link between the CNS and other parts of the body

Answer 5

the Peripheral nervous sytem

Question 6

two parts of PNS

Answer 6

1. sensory division (Afferent division)
2. Motor division (Efferent division)

Question 7

the neurons of afferent divison are?

Answer 7

sensory neurons

Question 8

the neurons of efferent division are?

Answer 8

motor neurons

Question 9

what are the two components of motor divison?

Answer 9

1. somatic nervous system
2. autonomic nervous system

Question 10

they transmit action potentials from the CNS to the Skeletal muscles

Answer 10

Somatic Nervous system

Question 11

they transmit action potentials from the CNS to smooth and cardiac muscles.

Answer 11

autonomic Nervous system

Question 12

what are the two divisions of the autonomic nervous system?

Answer 12

sympathetic division
parasympathetic division

Question 13

it has both sensory and motor neurons contained wholly within the digestive tract

Answer 13

enteric nervous system

Question 14

short often highly branching cytoplasmic extensions, they receive information form other neurons

Answer 14

dendrites

Question 15

a single long sell process extending from the neuron cell body

Answer 15

axon

Question 16

the area where the axon leaves the cell body

Answer 16

axon hillock

Question 17

axons branch and form ____

Answer 17

collateral axons

Question 18

enumerate the three types of neurons based on their structure

Answer 18

1. multipolar
2. bipolar
3. pseudo unipolar neurons

Question 19

a neuron that has many dendrites but a single axon only

Answer 19

multipolar neurons

Question 20

a neuron has a single axon and a single dendrite

Answer 20

bipolar neurons

Question 21

a neuron that has a single process extending from the cell body but it branches into two extensions

Answer 21

pseudo-unipolar neurons

Question 22

the supportive cells of the CNS and PNS

Answer 22

glial cells or neuroglia

Question 23

enumerate the four types of glial cells

Answer 23

1. astrocytes
2. ependymal cells
3. microglia
4. oligodendrocytes

Question 24

major supporting cells of the CNS. they stimulate or inhibit signaling activity and form the “blood-brain barrier”

Answer 24

astrocytes

Question 25

they produce cerebrospinal fluid

Answer 25

ependymal cells

Question 26

immune cells of the cns and remove bacteria and cell debris

Answer 26

microglia

Question 27

provide insulating material surrounding axons

Answer 27

oligodendrocytes

Question 28

specialized layers wrpped around the axons of some neurons

Answer 28

myelin sheaths

Question 29

gaps in the myelin sheaths

Answer 29

nodes of ranvier

Question 30

unsay naa sa gray matter?

Answer 30

cell body og dendrites

Question 31

unsay naa sa white matter?

Answer 31

axons og myelin sheaths

Question 32

what are the two basic types of ion channels?

Answer 32

gated channels
leak channels

Question 33

it is where the axon of one neuron interacts with another neuron or with cells of an effector organ

Answer 33

synapse

Question 34

it is an involuntary reaction in response to a stimulus

Answer 34

reflex