Sensory Reception And Processing
High-Yield Trend
Questions 14 MCQs
Bowman’s glands are found in:
1. olfactory epithelium
2. external auditory canal
3. cortical nephrons only
4. juxtamedullary nephrons
Bowman's glands are located in the:
1. proximal end of uriniferous tubules
2. anterior pituitary
3. female reproductive system of cockroach
4. olfactory epithelium of our nose
Given below is a diagrammatic cross-section of a single loop of human cochlea.
Which one of the following options correctly represents the names of three different parts?
| 1. | B: Tectorial membrane C: Perilymph D: Secretory cells |
| 2. | C: Endolymph D: Sensory hair cells A: Serum |
| 3. | D: Sensory hair cells A: Endolymph B: Tectorial membrane |
| 4. | A: Perilymph B: Tectorial membrane C: Endolymph |
Which one of the following is the correct difference between rod cells and cone cells of our retina?
| Features | Rod cells | Cone cells | |
| (a) | Visual acuity | High | Low |
| (b) | Visual pigment contained | Iodopsin | Rhodopsin |
| (c) | Overall function | Vision in poor light | Colour vision and detailed vision in bright light |
| (d) | Distribution | More concentrated in centre of retina | Evenly distributed all over retina |
1. a
2. b
3. c
4. d
1. vitamin-C
2. vitamin-D
3. vitamin-A
4. vitamin-B
Which part of the human ear plays no role in hearing as such but is otherwise very much required?
1. Eustachian tube
2. Organ of Corti
3. Vestibular apparatus
4. Ear ossicles
Parts A, B, C and D of the human eye are shown in the diagram. Select the option which gives correct identification along with its functions/characteristics:
| 1. | B-blind spot has only a few rods and cones |
| 2. | C-aqueous chamber reflects the light which does not pass through the lens |
| 3. | D-choroid- its anterior part forms the ciliary body |
| 4. | A-retina - contains photoreceptors rods and cones |
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
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 |
Good vision depends on adequate intake of carotene rich food.
Select the best option from the following statements:
| i. | Vitamin A derivatives are formed from carotene |
| ii. | The photopigments are embedded in the membrane discs of the inner segment |
| iii. | Retinal is a derivative of Vitamin A |
| iv. | Retinal is a light-absorbing part of all the visual photopigments |
1. (i),(iii) and (iv)
2. (i) and (iii)
3. (ii), (iii) and (iv)
4. (i) and (iv)
2. ligaments attached to the iris
3. smooth muscles attached to the iris
4. smooth muscles attached to the ciliary body
Which of the following statements is correct?
| 1. | Cornea consists of dense matrix of collagen and is the most sensitive portion of the eye. |
| 2. | Cornea is an external, transparent and protective proteinaceous ring of the eyeball |
| 3. | Cornea consists of dense connective tissue of elastin and can repair itself |
| 4. | The Cornea is convex, transparent layer which is highly vascularised |
Match the following columns and select the correct option:
| Column I | Column II | ||
| (a) | Rods and cones | (i) | Absence of Cones photoreceptor cells |
| (b) | Blind Spot | (ii) | Cones are densely packed |
| (c) | Fovea | (iii) | Photoreceptor cells |
| (d) | Iris | (iv) | Visible coloured portion of the eye |
| Options: | (a) | (b) | (c) | (d) |
| 1. | (iii) | (i) | (ii) | (iv) |
| 2. | (ii) | (iii) | (i) | (iv) |
| 3. | (iii) | (iv) | (ii) | (i) |
| 4. | (ii) | (iv) | (iii) | (i) |
| List I | List II | ||
| A. | Fovea | I | Visible coloured portion of eye that regulates diameter of pupil. |
| B. | Iris | II. | External layer of eye formed of dense connective tissue. |
| C. | Blind spot | III. | Point of greatest visual acuity or resolution. |
| D. | Sclera | IV. | Point where optic nerve leaves the eyeball and photoreceptor cells are absent. |
| Options: | A | B | C | D |
| 1. | II | I | III | IV |
| 2. | III | I | IV | II |
| 3. | IV | III | II | I |
| 4. | I | IV | III | II |