Select the incorrect statement regarding synapses:
1. Impulse Transmission across a chemical synapse is always faster than that across an electrical synapse.
2. The membranes of presynaptic and postsynaptic neurons are in close proximity in an electrical synapse.
3. Electrical current can flow directly from one neuron into the other across the electrical synapse.
4. Chemical synapses use neurotransmitters
Subtopic:  Synapse |
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Ear wax secreting cells have which type of epithelium? 
1. Columnar epithelium 
2. Exocrine glandular epithelium 
3. Compound epithelium 
4. Endocrine glandular epithelium 

Subtopic:  Outer & Middle Ear |
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Match List - I with List - II regarding sensory organs in human.

List - I  List - II
(a) Organ of corti  (i) Photo receptors
(b) Nasal mucosa (ii) Gustatory receptors
(c) Taste buds (iii) Auditory receptors
(d) Retina (iv) Olfactory receptors

Choose the correct answer from the option given below

(a) (b) (c) (d)
1. (ii) (iv) (iii) (i)
2. (iii) (iv) (ii) (i)
3. (iv) (iii) (i) (ii)
4. (iii) (i) (ii) (iv)
Subtopic:  Human Eye | Inner Ear: Cochlea | Smell & Taste |
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Match the following columns and select the correct option

              Column - I            Column - II

(a) The organ of Corti      (i) Connects the middle ear and pharynx

(b) Cochlea                    (ii) Coiled part of the labyrinth

(c) Eustachian tube        (iii) Attached to the oval window

(d) Stapes                     (iv)Located on the basilar membrane

     (a)  (b)  (c)  (d)

1.  (iii)  (i)  (iv)  (ii)

2.  (iv)  (ii)  (i)  (iii)

3.  (i)   (ii)  (iv)  (iii)

4.  (ii)  (iii)  (i)  (iv)

Subtopic:  Outer & Middle Ear | Inner Ear: Vestibular Apparatus | Inner Ear: Cochlea |
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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 proteinacious covering of the eye-ball

3. Cornea consists of dense connective tissue of elastin and can repair itself

4. Cornea is convex, transparent layer which is highly vascularised

Subtopic:  Basic Anatomy of Human Eye: 1 | Basic Anatomy of Human Eye: 2 | Basic Anatomy of Human Eye |
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Which of the following statements is not correct?

1. An action potential in an axon does not move backward because the segment behind is in a refractory phase.

2. Depolarization of hair cells of cochlea results in the opening of the mechanically gated Potassium- ion channels.

3. Rods are very sensitive and contribute to daylight vision.

4. In the knee-jerk reflex, stimulus is the stretching of muscle and response is its contraction.

Subtopic:  Human Eye: Adaptation |
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Which of the following receptors are specifically responsible for maintenance of balance of body and posture ?

1. Basilar membrane and otoliths

2. Hair cells and organ of corti

3. Tectorial membrane and macula

4. Crista ampullaris and macula

Subtopic:  Inner Ear: Vestibular Apparatus |
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Nissl bodies are mainly composed of
1. Proteins and lipids
2. DNA and RNA
3. Nucleic acids and SER
4. Free ribosomes and RER
Subtopic:  Nervous System |
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Which of the following structures or regions is incorrectly paired with its function ?
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.
Subtopic:  Diencephalon |
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The transparent lens in the human eye is held in its place by
1. ligaments attached to the ciliary body
2. ligaments attached to the iris
3. smooth muscles attached to the iris
4. smooth muscles attached to the ciliary body

Subtopic:  Basic Anatomy of Human Eye: 1 | Basic Anatomy of Human Eye |
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