What is the intensity of sound in normal conversation?
Which one of the following pairs of structures distinguishes a nerve cell from other types of cell?
Perikaryon and dendrites
Vacuoles and fibres
Flagellum and medullary sheath
Nucleus and mitochondria
Bowman's glands are located in the
proximal end of uriniferous tubules
female reproductive system of cockroach
olfactory epithelium of our nose
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
Given below is a diagrammatic cross section of a single loop of human cochlea.Which one of the following options correctly represents the names of three different parts?
B:Tectorial membraneC: PerilymphD: Secretory cells
C: EndolymphD: Sensory hair cellsA: Serum
D: Sensory hair cellsA: EndolymphB: Tectorial membrane
A: PerilymphB: Tectorial membraneC: Endolymph
Which one of the following statements is correct?
Neurons regulate endocrine activity, but not vice versa
Endocrine glands regulate neural activity and nervous system regulates endocrine glands
Neither hormones control neural activity nor the neurons control endocrine activity
Endocrine glands regulate neural activity, but now vice versa
Cornea transplantation is outstandingly successful because
cornea is easy to preserve
cornea is not linked up with blood vascular and immune systems
the technique involved is very simple
cornea is easily available
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
Afferent nerve fibres carry impulses from
effector organs to CNS
receptors to CNS
CNS to receptors
CNS to muscles
Respiratory centre is situated in