Neural Control and Coordination - Online Test
Q1. Part of brain that acts as relay centre to receive and transmit general sensations except smell :
Answer : Option C
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.
Q2. Among the following correct matches for ear parts and functions are :
column A
a) cristae
b) cerumen
c) organ of corti
d) maculae
column B
i) responsible for lubrication and protection
ii) responsible for dynamic equilibrium
iii)responsible for static equilibrium
iv) responsible for hearing
column A
a) cristae
b) cerumen
c) organ of corti
d) maculae
column B
i) responsible for lubrication and protection
ii) responsible for dynamic equilibrium
iii)responsible for static equilibrium
iv) responsible for hearing
Answer : Option C
Explaination / Solution:
The cristae present in internal ear is responsible for dynamic equilibrium. Cerumen is responsible for lubrication and protection. Organ of corti is responsible for hearing and maculae is responsible for static equilibrium of thebody.
Q3. Gustatoreceptors are responsible for the sense of :
Answer : Option C
Explaination / Solution:
Gustatoreceptors are responsible for the sense of taste. Gustatory receptors are located inside taste buds on the tongue.
Q4. In the process of eye donation a particular part of a dead man’s eye is stored and grafted on another person’s eye to restore vision. That donated part of eye is :
Answer : Option D
Explaination / Solution:
Eye donation process involves grafting of cornea of dead man’s eye, which is stored and grafted on another person’s eye to restore vision.
Q5. Read the following about neurohypophysis :
i. Neurohypophysis secretes neurohormones.
ii. Oxytocin and ADH are synthesized in neurohypophysis
Answer : Option B
Explaination / Solution:
Neurohyphysis secretes neurohormones, which is a posterior gland, itself is a neural projection from hypothalamus. Neurohypophyis secretes vasopressin and oxytocin hormone.
Q6. Match the following :
column A
a) Hypophysis
b) Modulator
c) Receptor
d) Effector
column B
i) Sense organs
ii) Pituitary
iii)Brain and spinal cord
iv) Muscles and glands
column A
a) Hypophysis
b) Modulator
c) Receptor
d) Effector
column B
i) Sense organs
ii) Pituitary
iii)Brain and spinal cord
iv) Muscles and glands
Answer : Option D
Explaination / Solution:
Hypophysis is a part of pituitary gland. Modulator is present in brain and spinal cord. Receptor is located in sense organs. Effectors are muscle and glands that bring about movement.
Q7. Find out the mismatched pair :
Answer : Option D
Explaination / Solution:
Different parts of human brain have specializedarea for different receptors. Visual area is located in occipital lobe. General sensory area are located in parietal lobe, smell area is located in frontal area. Speech area is not located in parietal lobe.
Q8. Reticular activating system (RAC) of brain :
i. it works as a bridge to connect the lower brain to the upper brain.
ii. it helps usto focus on the important things and evade the useless things.
i. it works as a bridge to connect the lower brain to the upper brain.
ii. it helps usto focus on the important things and evade the useless things.
Answer : Option D
Explaination / Solution:
Reticular activating system (RAC) of brain works as a bridge to connect the lower brain to the upper brain. It helps to focus on the important things and evade useless things.
Q9. The choroid layer in human eye :
i. darkens the cavity of eyeball to prevent internal reflection of light.
ii. its blood vessels nourish the retina.
iii. it regulates shape of eye lens.
i. darkens the cavity of eyeball to prevent internal reflection of light.
ii. its blood vessels nourish the retina.
iii. it regulates shape of eye lens.
Answer : Option A
Explaination / Solution:
The choroid layer in human eye darkens the cavity of eyeball to prevent internal reflection of light. The blood vessels of choroid layer nourish the retina. The shape of eye lens is changed by ciliary muscles.
Q10. Read the following :
i. In human iris, contraction of sphincter muscles widens the pupil in dim light to let in more light.
ii. The amount of pigment in the ciliary body of eye provides eye with its characteristic colour.
i. In human iris, contraction of sphincter muscles widens the pupil in dim light to let in more light.
ii. The amount of pigment in the ciliary body of eye provides eye with its characteristic colour.
Answer : Option C
Explaination / Solution:
Human eyes contain iris that is responsible for changing size of pupil to allow or preventthe amount of light entering the eyeball. Cons cells present in retina are responsible for colour perception.
