Neural Control and Coordination · Biology · MHT CET (Biology)
MCQ (Single Correct Answer)
Match the properties of nerve fibres in Column I with their explanation in Column II
| Column I | Column II | ||
|---|---|---|---|
| i. | Irritability | a. | Halting of nerve impulse transmission due to exhaustion of neurotransmitter. |
| ii. | Synaptic fatigue | b. | Ability to perceive stimulus and enter into a state of activity. |
| iii. | Conductivity | c. | Many subliminal stimuli are given in quick succession. |
| iv. | Summation effect | d. | Ability to transmit the excitation. |
Match parts of human ear in Column I with their structure / characteristic in Column II.
| Column I | Column II | ||
|---|---|---|---|
| i. | Organ of Corti | a. | Dynamic balance is maintained |
| ii. | Semi-circular Canal | b. | Sensory epithelium over basilar membrane of cochlea |
| iii. | Tympanic membrane | c. | Connects middle ear to the pharynx |
| iv. | Eustachian tube | d. | Transmits sound waves to middle ear |
Select the INCORRECT statement regarding spinal cord from the following.
Smallest branch of mixed spinal nerve is $\qquad$
Which one of the following is NOT an example of unconditioned reflex?
Resting potential of an axon is ___________ .
Disorder caused due to accumulation of amyloid proteins in CNS is ___________
Which of the following statements is INCORRECT regarding macula lutea?
Select the correct statements regarding sympathetic nervous system.
i. It consists of 31 pairs of sympathetic ganglia.
ii. It is also called cranio- sacral outflow.
iii. It controls body activities like fight and flight
iv. Pre-ganglionic fibres are long and post response. ganglionic fibres are short.
v. Adrenaline is produced towards terminal end of post-ganglionic fibres.
In a polarised state of nerve membrane, sodiumpotassium exchange pump actively restores the ions on their appropriate side because ________ against concentration electrochemical gradient.
Cranial nerve $\underline{\mathrm{i}}$ is also called pneumogastric, $\underline{\mathrm{i}} \underline{\mathrm{i}}$ is also called vestibulocochlear, and iii is also called Dentist's Nerve.
Match the parts of human eye in Column I with their respective characteristics in Column II.
| Column I |
Column II |
||
|---|---|---|---|
| i. | Fovea Centralis | a. | Thick, Muscular ring like structure at junction of choroid and iris. |
| ii. | Conjunctiva | b. | Area of retina from which the optic nerve and blood vessels leave the eyeball. |
| iii. | Blind spot | c. | Exposed, transparent part of sclera and cornea. |
| iv. | Ciliary body | d. | Place of formation of sharpest vision. |
Choose the correct option from below.
Consumption of which drug increases the concentration of dopamine in the brain?
CSF is secreted by
Arrange the following in sequence during the transmission of nerve impulse at chemical synapse.
i. Neurotransmitter binds with receptors of post synaptic cell.
ii. Calcium channels open and the calcium diffuses inward from ECF.
iii. Impulse travels along the axon of presynaptic neuron.
iv. Release of neurotransmitter by exocytosis.
v. Synaptic vesicles fuse with cell membrane of axon terminal of presynaptic neuron.
Lateral sulcus separates ________ .
Match column I with column II and select the correct option.
| Column I | Column II | ||
| i. | Frontal lobe | a. | Gustato receptors |
| ii. | Parietal lobe | b. | Olfactory receptors |
| iii. | Temporal lobe | c. | Sense of vision |
| iv. | Occipital lobe | d. | Broca's area |