Neurons

Question 1

What is the function of nervous tissue?

Answer 1

React to stimulus and respond to intracellular and extracellular change.

Question 2

What is the life time of nerve cells?

Answer 2

forever

Question 3

Do nerve cells divide?

Answer 3

no

Question 4

True or false- new nerve cells can be made in a life time.

Answer 4

True- via stem cell

Question 5

What is structural classification of nervous tissue?

Answer 5

CNS (spine + brain) and PNS (all but spine + brain)

Question 6

What is functional classification of nervous tissue?

Answer 6

ANS (viscera) and SNS (sensory)

Question 7

What are the nerve cells involved in nervous tissue?

Answer 7

Neuron and neuroglia

Question 8

True or false- motor has pseudounipolar and bipolar

Answer 8

False- sensory

Question 9

True or false- Sensory has multipolar

Answer 9

True

Question 10

True or false- anaxonic has no axon

Answer 10

True

Question 11

True or false- all neurons have only 1 axon

Answer 11

true- some are divided

Question 12

What are the 4 structural classification neurons?

Answer 12

• pseudounipolar
• bipolar
• multipolar
• anaxonic

Question 13

What are the 4 functional classification of neurons?

Answer 13

1. Sensory
2. Motor
3. Interneuron
4. Integrative

Question 14

True or false- sensory and motor function at both somatic and viscera

Answer 14

True

Question 15

True or false- Interneuron is between sensory and motor

Answer 15

true

Question 16

What neuroglia cells do CNS have?

Answer 16

• astrocyte
• Microglia
• oligodendrocyte
• Ependymal cell

Question 17

What neuroglia is largest in CNS?

Answer 17

Astrocyte

Question 18

Whats point of astrocyte?

Answer 18

Mechanical and physical support

Question 19

Whats point of microglia?

Answer 19

Phagocytic

Question 20

Whats neuroglia is smallest in CNS?

Answer 20

oligodendrocyte

Question 21

Whats the point of oligodendrocyte?

Answer 21

Myelin production

Question 22

Whats the point of Ependymal cell?

Answer 22

make cerebrospinal fluid

Question 23

What neuroglia cells do PNS have?

Answer 23

schwann and satellite

Question 24

Whats the point of satellite cell?

Answer 24

support and insulate

Question 25

Whats the point of schwann cell?

Answer 25

nerve support for myelin and nonmyelin and clean PNS debris

Question 26

Which part is dorsal part of spinal?

Answer 26

Sensory

Question 27

Which part is ventral part of spinal?

Answer 27

Motor

Question 28

What are neurons made of?

Answer 28

1. dendrites 2. cell body 3. axon 4. myelin sheath

Question 29

True or false- cell body has golgi apparatus

Answer 29

true

Question 30

What makes proteins in cell body?

Answer 30

nissil bodies

Question 31

Where are nissil bodies found?

Answer 31

only cell body and no where else.

Question 32

What do axon contain of?

Answer 32

Has microtubules, neurofilament vesicle and mitochondria

Question 33

How does PNS myelinated differ to nonmyelinated?

Answer 33

``` Myelinated= sucessive layer while non doenst Myelinated= outer layer cytoplasm + nucleus ```

Question 34

How does CNS myelinated differ to nonmyelinated?

Answer 34

``` myelinated= oligodendocyte- parallel nonmyelinated= bare ```

Question 35

Whats the connective tissue for PNS?

Answer 35

Epinerium (dense irregular): peripheral of nerve- fill space- blood travel through it Perinerium (loose/ arleor): nerve fibre + blood vessel Endornerium (delicate reticular): no vascular

Question 36

What is the grey areas function in spine and brain?

Answer 36

nonmyelinated

Question 37

Where is grey area of brain located?

Answer 37

out

Question 38

Where is grey area of spine located?

Answer 38

in

Question 39

What are the three synapses?

Answer 39

axodendritic, axosomatic and axoaxonic

Question 40

What are chemical synapes?

Answer 40

neurotransmitter

Question 41

What are example of electric synapses?

Answer 41

gap junction