Which of the following statements is/are true?
I: The resting axonal membrane is relatively more permeable to potassium ions and nearly impermeable to sodium ions.
II: Sodium-potassium pump transports 3 Na+ outwards for 2 K+ into the cell.
   
1. Only I 2. Only II
3. Both I and II 4. Neither I nor II

Subtopic:  Origin of Resting Membrane Potential | Action Potential |
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Level 1: 80%+
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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:  Origin of Resting Membrane Potential | Synapse |
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Level 1: 80%+
NEET - 2022
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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 

 71%
Level 2: 60%+
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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)
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Much of the sensory Motor, and associative neural activity of the cerebrum occurs on the surface, a layer called the
1. Corpus Callosum
2. Cerebral Cortex

3. Limbic System 
4. Basal Ganglia

 
Subtopic:  Cerebrum, EEG & Sleep |
 82%
Level 1: 80%+
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Which of the following is not an effect of parasympathetic stimulation?
1. Salivation
2. Gastric secretion

3. Pancreatic secretion
4. Contraction of sphincter of oddi.

 
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Which of the following structures is incorrectly paired with its function?
1. pons-conducts information between spinal cord and brain
2. cerebellum-contains the tracts that cross motor neurons from one side of the brain to the other side of the body.
3. thalamus-screens and relays incoming impulses to the cerebrum
4. corpus callosum-hand of fibers connecting left and right hemispheres
 
Subtopic:  Cerebrum, EEG & Sleep |
 59%
Level 3: 35%-60%
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Which of the following is not true of resting potential of a typical neuron?
1. The inside of the cell is more negative than is the outside
2. There are concentration gradients with more sodium outside the cell and a higher potassium concentration inside the cell
3. It is about 70 mV and can be measured by using microelectrodes placed inside and outside the cell.
4. It is formed by the sequential opening of voltage-gated channels.
 
Subtopic:  Action Potential |
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When the first walk from a brightly lit area into darkness, which of the following occur?
1. The pohtopsin of cones become bleached
2. Rod cells become hyperpolarized
3. Lateral inhibition caused by horizontal cells ceases.
4. Rhodopsin is still dissociated into retinal and opsin, and rods, are temporarily non-functional
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The pre-excitation potential difference between the outside and inside of a neuron is called:
1. Reaction potential 
2. Resting potential 
3. Spike potential 
4. Action potential 
Subtopic:  Origin of Resting Membrane Potential |
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