What used to be described as Nissl's granules in a nerve cell are now identified as
ribosomes
mitochondria
cell metabolites
fat granules
In a man, abducens nerve is injured. Which one of the following functions will be affected?
Movement of the eye ball
Swallowing
Movement of the tongue
Movement of the neck
A person suffering from the deficiency of the visual pigment rhodopsin is advised to take more
radish and potato
apple and grapes
carrot and ripe papaya
guava and ripe banana
One of the examples of the action of the autonomous nervous system is
knee-jerk response
pupillary reflex
swallowing of food
peristalsis of the intestine
Ommatidia serve the purpose of photoreception in
human
sunflower
cockroach
frog
The Nissl's granules of nerve cell are made on of
protein
DNA
RNA
Which part of human brain is concerned with the regulation of body temperature?
Medulla oblongata
Cerebellum
Cerebrum
Hypothalamus
Which cranial nerve has the highest number of branches?
Facial nerve
Trigeminal
Vagus nerve
None of these
During the transmission of nerve impulse through a nerve fibre, the potential on the inner side of the plasma membrane has which type of electric charge?
First negative, then positive and again back to negative
First positive, then negative and continue to be negative
First negative, then positive and continue to be positive
First positive, then negative and again back to positive
Parkinson's disease (characterized by tremors and progressive rigidity of limbs) is caused by degeneration of brain neurons that are involved in movement control and make use of neurotransmitter
acetylcholine
norepinephrine
dopamine
GABA