Photosensitive compound in the human eye is made up of:

1. Opsin and Retinal	2. Opsin and Retinol
3. Transducin and Retinene	4. Guanosine and Retinol

In the mammalian eye, the ‘fovea’ is the center of the visual field, where?

1. high density of cones occur, but has no rods

2. the optic nerve leaves the eye

3. only rods are present

4. more rods than cones are found

Which of the following regions of the brain is incorrectly paired with its function?

A gymnast is able to balance his body upside down even in total darkness because of:

1. cochlea
2. vestibular apparatus
3. tectorial membrane
4. the organ of Corti

Injury localized to the hypothalamus would most likely disrupt:

1. short-term memory

2. co-ordination during locomotion

3. executive functions, such as decision making

4. regulation of body temperature

The human hindbrain comprises three parts, one of which is:

A person entering an empty room suddenly finds a snake right in front on opening the door. Which one of the following is likely to happen in his neurohormonal control system?

A canal called the cerebral aqueduct passes through the:

1. Diencephalon

2. Midbrain

3. III ventricle

4. IV ventricle

The parasympathetic division of the autonomic nervous system is characterized by each of these except which one?

1. Preganglionic fibers arise from the thoracic and lumbar regions of the spinal cord.

2. Terminal ganglia are located close to effector organs.

3. It controls the digestive activities.

4. Parasympathetic postganglionic fibers secrete acetylcholine.

Which one of the following is the correct difference between rod cells and cone cells of our retina?

1. a
2. b
3. c
4. d