5.1 Neural Coordination

Question 1

What is the function of neural system?

Answer 1

it regulates the various body function

Question 2

Which embryonic layer is the origin of nervous system?

Answer 2

ectodermal

Question 3

Which one of the following signal is faster - hormonal/neural ?

Answer 3

neural

Question 4

What is the neural system composed of?

Answer 4

neural tissue

Question 5

What is the nervous system composed of?

Answer 5

neuron and glial cell

Question 6

What are the three major parts of the neuron?

Answer 6

cell body

dendrite

axon

Question 7

What are the dendrites and the axon together called?

Answer 7

neurites

Question 8

Which organelle is absent in the cyton ?

Answer 8

centriole

Question 9

Why does the neuron not divide?

Answer 9

because they dont have centriole

Question 10

Is the neuron mutlinecleates or uni nucleated?

Answer 10

uni nucleated

Question 11

What are some very distinct organelle present in the neuron?

Answer 11

nissl’s granules

neurofibrils

Question 12

What is the other name of nissl’s granules?

Answer 12

tigroid body

Question 13

What are the nissl’s granules?

Answer 13

they are formed by ER surrounded by clusters of ribosomes

Question 14

What is teh funciton of nissl’s granules?

Answer 14

they are teh site of protein synthesis

Question 15

What is the stain used to stain the neurons?

Answer 15

mrthyl blue

Question 16

Where are the nissl’s granules present?

Answer 16

in the cell body, dendron

but absent in axon

Question 17

In hwich cells are neurofibrils present ?

Answer 17

in mature neuron

Question 18

What is the function of neurofibrils ?

Answer 18

they are responsible for internal conduction in the cyton

Question 19

What is a dendron?

Answer 19

short fibres that branch repeatedly project outwards out of the cell body and also contain nissl’s granules are called dendrites

Question 20

What is teh functionof the denrites?

Answer 20

they transmit signal to the cyton

Question 21

What are axon ?

Answer 21

they are the long cytoplasmic process

Question 22

What is the longest cell process of a neuron called?

Answer 22

axon

Question 23

What is the cytoplasm of a axon called?

Answer 23

axoplasm

Question 24

What is the covering of axon called?

Answer 24

axolemma

Question 25

What are the organelle present in the axon ?

Answer 25

nerofibrils and mitochondria but no nissls granules

Question 26

Are nissl's granules present in the dendrites?

Answer 26

yes

Question 27

What is synaptic knobs?

Answer 27

these are the ends of the branched ends of the axon

Question 28

Where are neuro transmitters present in the neuron ?

Answer 28

synatic knob

Question 29

In which direction does the axon send the signals towards?

Answer 29

axon sneds signals from the ctyon to the other neurosn

Question 30

What is the phospholipid present on the axolemma called?

Answer 30

myelin sheath

Question 31

What is the phospholipid present in the mylein sheath called>

Answer 31

sphingomyelin

Question 32

What are the two types on the basis of the presence / absence of myelin sheath?

Answer 32

mylinated / non myelinated

Question 33

What are the gaps present in between the myelin sheath called?

Answer 33

node of ranvier

Question 34

What are the cells responsible for the foramtion og myelin sheath ?

Answer 34

CNS=== oligodendrocytes PNS==Schwann cells

Question 35

What is the function of myelin sheath ?

Answer 35

it acts as an insulator and prevents leakage

Question 36

Where are mylinated neurons present?

Answer 36

spinal and cranial neurons

Question 37

Where are the unmylinated cells present?

Answer 37

in the autonomous and somatic systems

Question 38

What is the stuff around the axon called?

Answer 38

neurilemma and sheath cells are present in the axon

Question 39

What are the two types of nervous tissue?

Answer 39

white and grey matter

Question 40

What is the position of white and grey matter in the cerebellum and cerebrum?

Answer 40

grey matter in the outside and white matter inside

Question 41

What is the position of white and grey matter in hte spinal cord , medulla , and medulla oblongata?

Answer 41

grey matter in the inside and white matter in the outside

Question 42

What is the collection of cyton in hte CNS called?

Answer 42

nuclei

Question 43

What is the collection of cyton in hte PNS called?

Answer 43

ganglia

Question 44

What is the colection of axon present in the CNS?

Answer 44

tract

Question 45

What is the collection of axon present in PNS called?

Answer 45

nerve

Question 46

What are the ytpes of neurons on the basis of the structure?

Answer 46

apolar unipolar bipolar multipolar pseudopolar

Question 47

Where are apolar neurons preset?

Answer 47

hydra | amacrine and horizontal cells of retina

Question 48

Where are the unipolar cells present?

Answer 48

embryonic neurosn

Question 49

Where are bipolar neurons present?

Answer 49

olfactory neurons retina

Question 50

Where are multipolar neuons ?

Answer 50

most of the neurons in the cerebral cortex

Question 51

Where are psuedounipolar cells presnet?

Answer 51

dorasal root of ganglia of spinal cord

Question 52

What are teh types of neurons on the basis of function?

Answer 52

afferent / sensory (from the organs to hte CNS ) and efferent/motor ( from CNS to the organ ) and inter neurons/ interconnecting neurons

Question 53

What are assocaition areas?

Answer 53

these are the regions that are neither sensory neither motor in function

Question 54

What is the function of association areas?

Answer 54

intersensory assocaition, memory and communication

Question 55

GENERATION AND CONDUCTION OF NERVE IMPULSE NOT DONE

Answer 55

GENERATION AND CONDUCTION OF NERVE IMPULSE NOT DONE