Which brain disease involves degeneration of cholinergic neurons in certain brain regions, causing deterioration of cognitive and intellectual functions in the elderly?
1. Schizophrenia
2. Depression
3. Alzheimer disease
4. Cerebral Palsy

What would happen if you had an unusually short basilar membrane in the cochlea?
1. Your sense of balance would be affected.
2. You would not be able to detect very high frequency sounds.
3. You would not be able to detect very low frequency sounds.
4. All sounds would be muffled

Which statement is not correct concerning rods and cones?
1. Rods are responsible for black and white vision.
2. Cones are responsible for color vision.
3. Most of the rods and cones are concentrated in the fovea.
4. Cones are responsible for high visual acuity or sharpness.

The actual receptors for hearing and balance are the _____.
1. mechanoreceptors
2. otoliths
3. cochlear cells
4. hair cells

The _____ acts to keep one aroused and awake.
1. vasomotor center
2. corpora quadrigemina
3. diencephalon
4. reticular formation

Five events in the transmission of nerve impulse across the synapse -
A. Opening of specific ion channels allows the entry of ions, a new action potential is generated in the post-synaptic neuron

B. Neurotransmitter binds to the receptor on post-synaptic membrane.

C. Synaptic vesicle fuses with pre-synaptic membrane, neurotransmitter releases into synaptic cleft

D. Depolarization of pre-synaptic membrane

E. Arrival of an action potential at the axon terminal

In which sequence do these events occur?

1. E$\to$ D$\to$ C $\to$B $\to$A
2. A $\to$B $\to$C $\to$D$\to$ E
3. A $\to$B $\to$D $\to$C $\to$E
4. E $\to$D $\to$C $\to$A $\to$B

Mark the correct statement:
1. Electrical synapses are more common in our neural system than chemical synapses.
2. The new potential in the post-synaptic neurons may be either excitatory or inhibitory.
3. Hypothalamus is the major coordination centre for sensory and motor signaling.
4. The tracts of nerve fibres that connect two cerebral hemispheres are called corpora bigemina.

Go through the following characterization of Sympathetic and. Parasympathetic Nervous System.
I. Dilates pupil,
II. $\uparrow$ Heart rate, BP (Vasoconstriction) $\uparrow$ Glycogenolysis, dilates bronchi.
III. Constricts pupil.
IV. Induces ejaculation.
V. $\uparrow$Gastric secretion, $\uparrow$ salivary secretion, $\uparrow$peristalsis.
VI. Erection and urination.
1. Sympathetic - III, V, VI; Parasympathetic - I, II, IV
2. Sympathetic - I, II, IV; Parasympathetic - III, V, VI
3. Sympathetic M II, IV, VI; Parasympathetic - I, III, V
4. Sympathetic - I, III, V; Parasympathetic - II, IV, VI

Human body temperature is regulated by the centre located in:

1. Cerebrum                 

2. Cerebellum

3. Medulla                   

4. Hypothalamus

In the human eye, there are three types of cones – red, blue, and green. When these cones are stimulated equally, a sensation for which of the following colors would be produced?
1. White
2. Black
3. Orange
4. Yellow