Neural Control & Coordination Questions
Association area are :-
Read the following statements carefully and find out the correct ? (1) A single schwann cell forms myelin around one and only one axon, while a single oligodendrocyte forms myelin around several separate axons. (2) During an action potential, influx
Brain stem includes
In the following flow diagram, identify the correct labelling (A and B). (i) A is the afferent nerve fibres transmit impulses from tissues/organs to the ANS (ii) B is the efferent fibres transmit regulatory impulses from the CNS to the concerned peri
Which of the following systems transmits impulse from CNS to involuntary organs and smooth muscles ?
Which of the following statements are correct regarding electrical synapse ? (a) Pre and postsynaptic membrane of neurons are in very close proximity at electric synapse. (b) In electrical synapse impulse transmitted in one directional only. (c) Tran
Five events in the transmission of nerve impulse across the synapse are given below : A. Opening of specific ion channels allows the entry of ions in the post-synaptic neuron. B. Neurotransmitter binds to the receptor on post synaptic membrane C. Syn
Assertion : Coordination is the process through which two or more organs interact and complement the functions of one another. Reason : The functions of muscles, lungs, heart, blood vessels, kidney and other organs are coordinated while performing ph
In neuron, the granular bodies found in the cell body and dendrites are called:
Which of the following are chemoreceptors?
A man suffers from loss of appetite, extreme thirst, and low body temperature. This indicates a tumor in the:
Select the correct sequence of steps in the mechanism of hearing:
The pigment 'Rhodopsin' (visual purple) is found in:
The fluid found inside the membranous labyrinth is:
Specific receptors of the vestibular apparatus responsible for maintenance of balance and posture are:
The vestibular apparatus, responsible for maintaining body balance, consists of:
The 'Organ of Corti' is located on the:
The coiled portion of the labyrinth is called:
Which structure connects the middle ear cavity with the pharynx?
The ear ossicles (Malleus, Incus, Stapes) are found in the:
The space between the cornea and the lens is filled with:
The point of greatest visual acuity (resolution) in the retina is:
The 'Blind spot' is the region where:
Which of the following is responsible for daylight (photopic) vision and color vision?
Photoreceptor cells of the retina are:
The aperture surrounded by the iris is the:
The ciliary body is a part of:
The wall of the eyeball is composed of three layers. The outer layer is:
The correct sequence of a reflex arc is:
A reflex action is:
The brain stem consists of:
Which part of the brain is called the "little brain" and is responsible for maintaining posture and balance?
The four round swellings on the dorsal portion of the midbrain are:
The Limbiс system (Limbic lobe) is associated with:
The part of the brain that controls body temperature, urge for eating and drinking is:
The 'Corpus callosum' connects:
The canal that passes through the midbrain is called:
The membranes of the brain from outer to inner are:
The transmission of an impulse across a chemical synapse is accomplished by:
The electrical potential difference across the plasma membrane at the site of excitation is called:
When a stimulus is applied to a site on the polarized membrane, the membrane becomes freely permeable to:
The ionic gradients across the resting membrane are maintained by the active transport of ions by the:
During the resting state of a neuron, the axonal membrane is:
Unmyelinated nerve fibers are commonly found in:
The gaps between two adjacent myelin sheaths are called:
Following are some statements related to neuron. Select the false statement:
The fluid-filled cavities of the brain are called:
Nissl’s granules are mainly present in:
The parasympathetic nervous system mainly functions to:
Which of the following is true regarding saltatory conduction?