Neural Control and Coordination - Online Test
Q1. Read the following about the surface of cerebral hemispheres
i. Is made up of the pia matter.
ii. Is greatly convoluted and called the cerebral cortex.
i. Is made up of the pia matter.
ii. Is greatly convoluted and called the cerebral cortex.
Answer : Option A
Explaination / Solution:
The layer of cells which covers the cerebral hemisphere is called cerebral cortex and is thrown into prominent folds.
Q2. The autonomic nervous system or ANS :
i. Is truly autonomic i.e. independent of the CNS.
ii. Is also known as the VNS.
iii. Transmit impulse from CNS to involuntary organs and smooth muscles.
i. Is truly autonomic i.e. independent of the CNS.
ii. Is also known as the VNS.
iii. Transmit impulse from CNS to involuntary organs and smooth muscles.
Answer : Option B
Explaination / Solution:
The autonomic nervous system or ANS is the division of peripheral nervous system that influences the function of internal organs. ANS is also known as VNS. These nerves transmit impulse from CNS to involuntary organs and smooth muscles.
Q3. Label the arrows in the given diagram of brain from top to bottom :
Answer : Option B
Explaination / Solution:
The part of human brain shown above has marked as cerebellum, pons and medulla oblongata of hind brain.
Q4. The band of nerve fibers that joins the two cerebral hemisphere in mammals is :
Answer : Option D
Explaination / Solution:
The corpus callosum (CC) is the largest of the commissural fibres, linking the cerebral cortex of the left and right cerebral hemisphere.
Q5. Vermis is a portion of :
Answer : Option B
Explaination / Solution:
Cerebral vermis is located in the medial, cortico-nuclear zone of the cerebellum. It is constricted between lobe of cerebellum.
Q6. Part of brain that acts as relay centre to receive and transmit general sensations except smell :
Answer : Option A
Explaination / Solution:
Thalamus is the part of brain that acts as relay centre to receiveand transmit general sensations except smell. Thalamus is located in the forebrain superior to the midbrain.
Q7. Brain cavities are filled with CSF. In subarachnoid space, the CSF plays following roles :
Answer : Option A
Explaination / Solution:
Brain cavities are filled with cerebrospinal fluid (CSF). In subarachnoid space, the CSF acts as shock proof cushion to prevent in injury in case of accident.
Q8.
In Pavlov’s conditioned reflex experiment find the correct matches :
| Column A | Column B |
| a) conditioned stimulus | i) salivation in response to food |
| b) conditioned response | ii) food itself |
| c) unconditioned stimulus | iii)sound of the bell |
| d) unconditioned response | iv) salivation in response to bell |
Answer : Option C
Explaination / Solution:
There are different kinds of stimulus that is received by different receptors in our body. Hearing of sound of bell is conditioned stimulus and salivation in response to bell is conditioned response. Food itself is conditioned stimulus and salivation in response to food is unconditioned response.
Q9. In the following identify from up to down :
(i)&(ii)
(iii) & (iv)
(i)&(ii)
(iii) & (iv)
Answer : Option B
Explaination / Solution:
The reflex pathway comprises at least one afferent neuron (receptor) and one efferent (effectoror excitor) neuron appropriately arranged in a series. The (iii) and (iv) shows gray and white matter.
Q10. A region on retina of human eye which is free from rods and cones is :
Answer : Option A
Explaination / Solution:
The optic nerves leave the eye and the retinal blood vessels enter it at a point medial to and slightly above the posterior pole of the eye ball. Photoreceptor cells are not present in that region and hence it is called the blind spot.
