In a chemical synapse, when an impulse arrives at the axon terminal, it:
1. leads to opening of the calcium channels at the post synaptic membrane
2. Stimulates the movement of synpatic vesicles towards the membrane 
3. causes the binding of the neurotransmitter of its receptors on the post synaptic neuron 
4. activates the opening the potassium channels in the axon terminal 

Subtopic:  Origin of Resting Membrane Potential |
 67%
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Consider the following statements:

I. A motor neuron along with the muscle fibers connected to it constitute a motor unit

II. The neurotransmitter released at the neuro-muscular junction is Acetylcholine.

III. Myosin head has ATPase activity

Which of the above statements are true?

1. I and II only

2. I and III only

3. II and III only

4. I, II, and III

Subtopic:  Neuroanatomy |
 83%
From NCERT
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Consider the following statements:

I. Somatic neural system relays impulses from CNS to skeletal muscles.

II. Autonomic neural system transmits impulses from CNS to involuntary organs and smooth muscles

III. Unmyelinated nerve fibres are commonly found in spinal and cranial nerves

Which of the above statements are true?

1. I and II only

2. I and III only

3. II and III only

4. I,II and III

Subtopic:  Nervous System |
 72%
From NCERT
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What is coordination?
1. It is the process through which two or more organs interact and complement the functions of one another
2. It is the process of serving tissues
3. It is the process of giving blood and masses to other tissue at the level of structure
4. It is the ratio of functional and non functional organs

Subtopic:  Nervous System |
 98%
From NCERT
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Which of the following would not occur when we do physical exercises?

(1) Increased energy demand

(2) Increased oxygen supply and increased urine formation

(3) Increased in the rate of respiration, heart beat

(4) Increased blood flow via blood vessels

Subtopic:  Autonomic Nervous System (OLD NCERT) |
 86%
From NCERT
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In our body, which of the following systems do not jointly coordinate and integrate all the activities of the organs so that they function in a synchronised fashion?

(1) Neural system

(2) Endocrine system

(3) Circulatory system

(4) Both B and C

Subtopic:  Nervous System |
 71%
From NCERT
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Neuron cannot perform which of the following functions?

(1) Detection of stimuli

(2) Receiving stimuli

(3) Transmitting different kinds of stimuli

(4) Giving nutrition to neuroglial cells

Subtopic:  Nervous System |
 95%
From NCERT
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Which of the following does not has brain?

(1) Hydra

(2) Insects

(3) Vertebrates

(4) Earthworm

Subtopic:  Nervous System |
 92%
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Human neural system has

(1) CNS

(2) PNS

(3) Both A and B

(4) MNS

Subtopic:  Nervous System |
 98%
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CNS is not

(1) Brain

(2) Spinal cord

(3) Site of information processing and control

(4) Tissues/organs

Subtopic:  Nervous System |
 93%
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