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Zoology class 11 NEET > CH NEURAL CONTROL AND COORDINATION > Flashcards

CH NEURAL CONTROL AND COORDINATION Flashcards

1
Q

What is coordination

A

The process via which two or more organs interact or complement each other is k/a Coordination

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2
Q

Which system jointly coordinates and integrates all of the organs of the body so that they work in a synchronised fashion

A

The neural system and endocrine system

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3
Q

The human neural system consists of

A
  1. The CNS
  2. PNS
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4
Q

What is a nerve

A

Nerve is a collection of Nerve fiber

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5
Q

How many Nerve are present in Spinal and Cranial Nerve

A

There are 31 pairs of Spinal Nerve and 12 Pair of Cranial Nerve

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6
Q

The part of the PNS that controls Voluntary action is k/a

A

Somatic Nervous System

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7
Q

The part of the PNS that controls Involuntary action is k/a

A

Autonomic/ Visceral System

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8
Q

The sympathetic and Parasympathetic Nervous system have _____ effect on the organ

A

Antagonistic or opposite effect

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9
Q

How many neurons are present in the human brain

A

more than 100 billion neurons are present in the brain

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10
Q

Bipolar Neuron is present in

A

Retina of eye, olfactory epithelium

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11
Q

Unipolar neuron is present in

A

Embryonic stage

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12
Q

Pseudounipolar neuron is present in

A

Neurons of Dorsal root ganglion of spinal cord

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13
Q

The nissils granules are made up of

A

RER

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14
Q

for active transportation across the membrane, we use

A

PUMPS

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15
Q

for passive transportation across the membrane we use

A

CHANNELS

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16
Q

What is impulse in a neuron

A

The flow of positive charge towards negative charge in a neuron is k/a Impulse

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17
Q

What is polarization

A

When opposite charges are present across the membrane it is polarized. The neuron i said to be in resting state

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18
Q

In neurons, the resting membrane potential ranges from _____ to ______. A typical value is _____.

A

It ranges from -40 to -90 mV. A typical value is -70mV

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19
Q

What is resting membrane potential

A

The potential of the membrane in resting state i.e polarized state is k/a Resting membrane potential

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20
Q

what is the approximate value of Hyperpolarization, When does it occur

A

-85 mV, It occurs when there is more polarization that required

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21
Q

How does Na+ K+ pump work

A

Na+/K+ PUMP helps in transportation of 3Na+ outwards and 2 K+ Inwards at the cost of 1 ATP

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22
Q

What happens when Neurons receive a threshold potential

A

When the neurons reach threshold potential which is about -55mV, this causes the Na+ Voltage gated channels to open which results in rapid influx of Na+ and thus there is depolarization (Excitatory state) of the membrane

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23
Q

What is the value of action potential/ Nerve impulse

A

+40mV

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24
Q

What are the different steps during transmission of impulse

A
  1. Membrane is polarized or under resting state.
  2. A threshold stimulus is provided that cause Depolarization of the membrane i.e. it goes under excitatory state
  3. Once it reaches the action potential, the Na+ VGC close and K+VGC open and the membrane starts to repolarize
  4. The membrane is repolarized so much so that it reaches Hyperpolarized state
  5. Then with the help of Na+/K+ pump the membrane is brought back to polarized/ resting state
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25
Q

Name the different meningens in order of outer to inner

A
  1. Duramater
  2. Arachnoid
  3. Piamater
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26
Q

The fluid present in Sub arachnoid and sub dural space is/are

A

In sub arachnoid space - CSF is present
in sub dural space - a watery fluid like ECF is present

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27
Q

The longest fissure that divides the cerebrum into 2 is k/a

A

Median Fissure

28
Q

What is Corpus callosum

A

It is a band of nerve tract which attaches the 2 cerebral hemisphere posteriorly

29
Q

how much fraction of neurons are concentrated in the folds of the brain

A

2/3rd of neurons

30
Q

The structure of brain is divided into 3 parts in embryonic stage, they are

A
  1. Prosencephalon
  2. Mesencephalon
  3. Rhombencephalon
31
Q

Our brain has ______ lobes in total

A

8

32
Q

What are the different lobes present in each hemisphere

A
  1. Frontal
  2. Parietal
  3. Occipital
  4. Temporal
33
Q

In anamniotes ______ pairs of cranial nerve are present

A

10

34
Q

The diencephalon comprises of

A
  1. Epithalamus
  2. Thalamus
  3. Hypothalamus
35
Q

The Limbic System consists of

A
  1. Amygdala
  2. Hippocampus
  3. Hypothalamus
36
Q

The temporal lobe has which centers

A

Auditory and olfactory lobe

37
Q

What is the function of Hippocampus

A

It converts short term memory to long term memory

38
Q

Amygdala is ______ shaped and it helps to _______

A

Amygdala is almond shaped and it helps to control emotions like rage, fear, excitement

39
Q

_______ helps with confidence and motivation

A

Limbic System

40
Q

Cerebellum is also k/a

A

Little Cerebrum

41
Q

Which is the second largest part of the brain

A

Cerebellum

42
Q

The Rhombencephalon consists of `

A

Medulla, Pons, Cerebellum

43
Q

Brain stem forms the connection between

A

Brain and Spinal Cord

44
Q

The Limbic system is also k/a _____ Brain

A

Emotional Brain

45
Q

The mid brain consists of

A

Corpora Quadrigemina and Crura Cerebri

46
Q

What makes up the telencephalon

A

Cerebral Cortex, Corpus Striatum, Hippocampus, Amygdala

47
Q

Maximum growth of brain occurs by the age of

A

6

48
Q

What are the major areas of the cerebral cortex

A

Motor areas, Sensory area and association area are the major areas of the cerebral cortex

49
Q

_______ is also k/a Relay Centre of the brain

A

Thalamus

50
Q

What are the function of the association area of the brain

A

Helps in memory creation, Intersensory association, Communication

51
Q

_____ controls feeling of Satiety

A

Hypothalamus

52
Q

How many ventricles are present in the brain

A

There are 4 ventricles in the brain

53
Q

_________ has the most complex neuron which is k/a

A

Cerebellum has the most complex nail which is k/a Purkinjie fibre

54
Q

______ in cerebellum is k/a The tree of life

A

Arbor Vitae

55
Q

All activities of Cerebellum are

A

Involuntary and involves learning at early stage

56
Q

Which part of the brain is directly connected to spinal Cord

A

Medulla Oblongata

57
Q

Highly vascular and closely investing protective coat around brain is k/a

A

Pia Mater

58
Q

The brain stem comprises of

A

Pons, Medulla and mid brain

59
Q

The medulla oblongata includes which function

A
  1. Controls cranial reflexes like sneezing, coughing, salvation
  2. It includes centre for gastric secretion, cardiovascular reflexes, respiration
60
Q

The 1st and 2nd ventricle is called as

A

Paracoel/ Lateral Ventricle

61
Q

the 3rd ventricle is k/a

A

Diocoel

62
Q

_______ connects two cerebellar hemisphere

A

Vermis

63
Q

Which lobe is responsible for self consciousness

A

Parietal Lobe

64
Q

most of the impulses in the body are

A

Chemical Impulses

65
Q

The superior and inferior colliculi control ______ and ________ respectively

A

Visual and auditory reflexes

Zoology class 11 NEET (14 decks)

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