NEURAL CONTROL AND COORDINATION

Which of the following is not likely to happen during activation of the sympathetic division of the nervous system?

• increase in sweating

• increase in pupil size

• increase in heart rate

• increase in digestion

Which of the following is wrongly matched?

• Fovea - retina

• Corpus callosum - Forebrain

• limbic system - forebrain

• visual purple - cones

In ear, the membranous labyrinth is filled with fluid called -

• endolymph

• perilymph

• plasma

• hemolymph

The brain stem is made up of-

• midbrain, pons, cerebellum

• midbrain, pons, medulla oblongata

• diencephalon, medulla oblongata, cerebellum

• cerebellum, cerebrum, medulla oblongata

Which part of human ear plays no role in hearing as such but is otherwise very much required?

• organ of Corti

• vestibular apparatus

• ear ossicles

• eustachian tube

The order of the three layers of cells in the retina of human eye from inside to outside is -

• ganglion cells, rods, cones

• bipolar cells, photoreceptor cells, ganglion cells

• ganglion cells, bipolar cells, photoreceptor cells

• photoreceptor cells, ganglion cells, bipolar cells

Read the following statements and choose the incorrect one?

• the aperture surrounded by the iris is called the pupil

• the diameter of the pupil is regulated by the muscle fibres of iris

• cerebellum has very convoluted surface in order to provide the additional space for many more neurons

• brain is covered by an outer layer called duramater, a very thick middle layer called arachnoid and an inner layer called piamater

The scala vestibuli communicates with scala tympani through narrow canal called -

• ductus endolymphaticus

• helicotrema

• ductus utriculi

• sacculo utricular canal

If the receptors are removed from post synaptic membrane, then-

• synaptic transmission will be faster

• chemical synaptic transmission will not occur

   

• chemical synaptic transmission will become slow

• synaptic transmission will not be affected

. A man is admitted to a hospital. He is suffering from an abnormally low body temperature, loss of appetite and extreme thirst. His brain scan would probably show a tumor in?

• pons

• cerebellum

• medulla oblongata

• hypothalamus