Q. No.Photosensitive compound in human eye is made up of
1. opsin and Retinal
2. opsin and Retinol
3. transducin and Retinene
4. guanosine and Retinol
Receptor sites for neurotransmitters are present on:
1. Pre-synaptic membrane
2. Tips of axons
3. Post-synaptic membrane
4. Membrane of synaptic vesicles
| Column I | Column II | |
| 1. | Medulla oblongata | controls respiration and cardiovascular reflexes. |
| 2. | Limbic system | consists of fibre tracts that interconnect different regions of brain; controls movement. |
| 3. | Hypothalamus | production of releasing hormones and regulation of temperature, hunger and thirst. |
| 4. | Corpus callosum | band of fibers connecting left and right cerebral hemispheres. |
2. ligaments attached to the iris
3. smooth muscles attached to the iris
4. smooth muscles attached to the ciliary body
Choose the correct statement:
| 1. | Nociceptors respond to changes in pressure |
| 2. | Meissner's corpuscles are thermoreceptors |
| 3. | Photoreceptors in the human eye are depolarised during darkness and become hyperpolarised in response to the light stimulus |
| 4. | Receptors do not produce graded potentials |
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?
| 1. | Medulla oblongata-Homeostatic control |
| 2. | Cerebellum-Language comprehension |
| 3. | Corpus callosum-Communication between the left and right cerebral cortices |
| 4. | Cerebrum-Calculation and contemplation |
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
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