Neural control and coordination practice · Medium

Association areas in forebrain of humans are associated with
a. Communication b. Memory c Intersensory associations
Choose the option which includes all the correct ones

The afferent nerve fibres transmit impulses

Assertion : Neurons regulates the endocrine
activity but not vice-versa.

Reason : Endocrine gland regulates neural activity
and neural activity regulates endocrine gland.

Autonomic nervous system affects

Assertion : The imbalance in concentration of
$N{a^ + },{K^ + }$ and proteins generates resting potential.

Reason : To maintain the unequal distribution
of $N{a^ + }\,\& \,{K^ + }$, the neurons use electrical energy.

Carefully read the following statements and choose the option that correctly fill the blanks (A) and (B).
In human ear, the membranous labyrinth is surrounded by a fluid called A, and is itself filled with a fluid called B.

The cell body of neuron contains of

The cutaneous plexus and the papillary plexus consists

The reflex arc, which is made of two neurons is known as

Which part of brain controls intellectual ability?

Which one of the following is an example of negative feedback loop in humans?

Assertion: Reflex arc comprises of at least one
afferent neuron, one efferent neuron and a part
of PNS.

Reason: The efferent neuron receives signal
from a sensory organ and transmits the impulse
via a ventral nerve root into the PNS.

Which of the following system provides the fastest means of communication within the body?

In laboratory there are three sample of brain which are placed for study. These samples are X, Y, Z.

$\bullet$ In sample X, Y, Z, 12 pair cranial nerves occurs.

$\bullet$ In sample Z, corpus callosum occurs.

What is the correct statement for these brain samples

a. X, Y brain sample may be of reptiles and birds brain.

b. X, Y brain sample may be of amphibian, reptiles, birds brain.

c. Z brain sample surely only mammalian brain.

d. X brain sample may be of birds or mammalian brain.

Ina myelinated neuron, two adjacent myelin sheaths are separated by gaps called

A 22 years student goes to his ophthalamologist. He has problem in reading books because he is not be able to contract his

Assertion: Nerve impulse can never be transmitted from dendrite or cell body of one neuron to the axon of
the next neuron, across a synapse
Reason: This happens because of the synaptic delay at each synapse

Assertion (A): Impulse transmission across a electrical synapse is always slower than across a chemical synapse.

Reason (R): The membranes of pre and post synaptic neurons are not in close proximites at electrical synapse.

Saltatory conduction occurs in

True about electrical synapses
I. pre and postsynaptic neurons are in very close proximity
II. pre and postsynaptic neurons are separated by synaptic cleft
III. impulse transmission is very fast
IV. electrical synapses are common in our system
Select the correct option

If an organism has more rods, it will

Assertion: Sparrows possess poor night vision.

Reason: Sparrows eyes are made up of
ommatidia.

The inner layer of eye, retina contains three layers of neural cells, which does not include

The potential difference across the membrane of nerve fibre when it does not shown any physiological activity is called resting potential. It is about

A man is admitted in a hospital. He is suffering from an abnormally low body temperature, loss of appetite and extreme thirst. His brain scan would probably show a tumour in

Choose the odd pair out in the following.

A: Spinal cord has a column of both grey & white matter
R: Grey matter forms the central spinal canal

Assertion (A): Sodium potassium pump contribute to the negativity of the resting membrane potential.

Reason (R): Sodium potassium pump transports $2{Na}^{+}$ outwards for $3{K}^{+}$into the cell.

The function of $N{a^ + }$ and ${K^ + }$ pump is to move

Which one is correct about the focusing of the eye?