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porsche 911 turbos > 5.1 Neural Coordination > Flashcards

5.1 Neural Coordination Flashcards

1
Q

What is the function of neural system?

A

it regulates the various body function

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2
Q

Which embryonic layer is the origin of nervous system?

A

ectodermal

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3
Q

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

A

neural

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4
Q

What is the neural system composed of?

A

neural tissue

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5
Q

What is the nervous system composed of?

A

neuron and glial cell

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6
Q

What are the three major parts of the neuron?

A

cell body

dendrite

axon

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7
Q

What are the dendrites and the axon together called?

A

neurites

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8
Q

Which organelle is absent in the cyton ?

A

centriole

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9
Q

Why does the neuron not divide?

A

because they dont have centriole

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10
Q

Is the neuron mutlinecleates or uni nucleated?

A

uni nucleated

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11
Q

What are some very distinct organelle present in the neuron?

A

nissl’s granules

neurofibrils

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12
Q

What is the other name of nissl’s granules?

A

tigroid body

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13
Q

What are the nissl’s granules?

A

they are formed by ER surrounded by clusters of ribosomes

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14
Q

What is teh funciton of nissl’s granules?

A

they are teh site of protein synthesis

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15
Q

What is the stain used to stain the neurons?

A

mrthyl blue

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16
Q

Where are the nissl’s granules present?

A

in the cell body, dendron

but absent in axon

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17
Q

In hwich cells are neurofibrils present ?

A

in mature neuron

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18
Q

What is the function of neurofibrils ?

A

they are responsible for internal conduction in the cyton

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19
Q

What is a dendron?

A

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

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20
Q

What is teh functionof the denrites?

A

they transmit signal to the cyton

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21
Q

What are axon ?

A

they are the long cytoplasmic process

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22
Q

What is the longest cell process of a neuron called?

A

axon

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23
Q

What is the cytoplasm of a axon called?

A

axoplasm

24
Q

What is the covering of axon called?

A

axolemma

25
Q

What are the organelle present in the axon ?

A

nerofibrils and mitochondria

but no nissls granules

26
Q

Are nissl’s granules present in the dendrites?

A

yes

27
Q

What is synaptic knobs?

A

these are the ends of the branched ends of the axon

28
Q

Where are neuro transmitters present in the neuron ?

A

synatic knob

29
Q

In which direction does the axon send the signals towards?

A

axon sneds signals from the ctyon to the other neurosn

30
Q

What is the phospholipid present on the axolemma called?

A

myelin sheath

31
Q

What is the phospholipid present in the mylein sheath called>

A

sphingomyelin

32
Q

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

A

mylinated / non myelinated

33
Q

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

A

node of ranvier

34
Q

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

A

CNS=== oligodendrocytes

PNS==Schwann cells

35
Q

What is the function of myelin sheath ?

A

it acts as an insulator and prevents leakage

36
Q

Where are mylinated neurons present?

A

spinal and cranial neurons

37
Q

Where are the unmylinated cells present?

A

in the autonomous and somatic systems

38
Q

What is the stuff around the axon called?

A

neurilemma and sheath cells are present in the axon

39
Q

What are the two types of nervous tissue?

A

white and grey matter

40
Q

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

A

grey matter in the outside and white matter inside

41
Q

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

A

grey matter in the inside and white matter in the outside

42
Q

What is the collection of cyton in hte CNS called?

A

nuclei

43
Q

What is the collection of cyton in hte PNS called?

A

ganglia

44
Q

What is the colection of axon present in the CNS?

A

tract

45
Q

What is the collection of axon present in PNS called?

A

nerve

46
Q

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

A

apolar

unipolar

bipolar

multipolar

pseudopolar

47
Q

Where are apolar neurons preset?

A

hydra

amacrine and horizontal cells of retina

48
Q

Where are the unipolar cells present?

A

embryonic neurosn

49
Q

Where are bipolar neurons present?

A

olfactory neurons

retina

50
Q

Where are multipolar neuons ?

A

most of the neurons in the cerebral cortex

51
Q

Where are psuedounipolar cells presnet?

A

dorasal root of ganglia of spinal cord

52
Q

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

A

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

53
Q

What are assocaition areas?

A

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

54
Q

What is the function of association areas?

A

intersensory assocaition, memory and communication

55
Q

GENERATION AND CONDUCTION OF NERVE IMPULSE NOT DONE

A

GENERATION AND CONDUCTION OF NERVE IMPULSE NOT DONE

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