Conduction of nerve impulse through a nerve fibre is purely:
A.A physical phenomenon
B.A mechanical phenomenon
C.An electrochemical phenomenon
D.None of these
Category: Nervous System Physiology Mcqs
If heart is stimulated through vagus nerve, the heart rate will:
A.Increase
B.Decrease
C.Show no change
D.None of these
Some particle in nasal chamber would lead to:
A.Sneezing
B.Coughing
C.Both (a) & (b)
D.None of these
Acetylcholine is:
A.Chemical transmittor across synapses
B.Chemical messenger
C.Antistress hormone
D.None of these
Which of these is not a neurohormone:
A.Acetylcholine
B.Norepinephrine
C.Epinephrine
D.Glycine
The impulses from sense organs are always carried from sense organs to CNS by means of:
A.Dendrites
B.Axons
C.Cytons
D.None of these
Afferent nerve fibres conduct impulses from:
A.Effectors to receptors
B.Receptors to effectors
C.Receptors to CNS
D.CNS to receptors
Sodium-pump functions mainly to:
A.Maintain osmotic equilibrium between ECF and cytoplasm
B.Reduce the charges over surface membrane
C.To speed up the propagation of nerve impulse
D.Perform none of these
Sodium pump means:
A.Expelling of Na+ into ECF and intake of K+ from cytoplasm against concentration gradient
B.Expelling of K+ into ECF and intake of Na+ from cytoplasm
C.Only expelling of Na+ into ECF
D.Only intake of K+ into cytoplasm
Sodium-potassium-pump operates with the help of which of these enzymes:
A.Na+ – K+ ATPase
B.Phosphatase
C.Isomerase
D.Hydrolase
