Tag: biology

Questions Related to biology

Subdural space is between

biology nervous system of man human nervous system the structure of brain the human brain

  1. Piamater and arachnoid

  2. Arachnoid and duramater

  3. Piamater and grey matter

  4. Grey matter and white matter

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Correct Option: B
Explanation:

The meninges are the coverings of the brain that are present interior to the cranium. The outermost layer is called the dura mater. The middle layer is the arachnoid mater. The pia mater is the innermost vascular layer. There is a space present between the dura mater and the arachnoid mater that is called the sub-dural space. It is filled with the serous fluid and provides mechanical support. The space between the arachnoid mater and the pia mater is called the sub-arachnoid space. It is filled with the cerebrospinal fluid.

Hence, the correct answer is 'Arachnoid and dura mater'

Neurotransmitters are released at the synapse by ___________

biology coordination generation and conduction of nerve impulse generation of nerve impulse neurons and synapses

  1. Tips of Dendrites

  2. Synaptic Knobs

  3. Organelles of Cyton

  4. Myelin sheath of Axon

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Correct Option: A

Which one of the following nerve stimulates gastric glands of secrete gastric juice and promote contractions of smooth muscles of stomach wall?

biology coordination generation and conduction of nerve impulse generation of nerve impulse neurons and synapses

  1. Sacral spinal nerve

  2. Vagus nerve

  3. Glassopharyngeal

  4. Lumbar spinal nerve

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Correct Option: A

In reductive amination, the product is?

biology coordination generation and conduction of nerve impulse generation of nerve impulse neurons and synapses

  1. $\alpha$-ketoglutaric acid

  2. Glutamine

  3. Glumate

  4. Alanine

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Correct Option: C

Nerve impulse travel through synapse with the help of?

biology coordination generation and conduction of nerve impulse generation of nerve impulse neurons and synapses

  1. Acetylcholine and sympathetin

  2. Choline and acetylcholine

  3. Adrenaline and noradrenaline

  4. None of the above

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Correct Option: A

Nerve impulse takes place with?

biology coordination generation and conduction of nerve impulse generation of nerve impulse neurons and synapses

  1. Ventricular systole

  2. Ventricular diastole

  3. Auricular systole

  4. None of these

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Correct Option: A

Synaptic fatigue is due to

biology coordination generation and conduction of nerve impulse generation of nerve impulse neurons and synapses

  1. Repeated release of acetylcholine

  2. Repeated release of adrenaline

  3. Exhaustion of neurotransmitter

  4. Exhaustion of acetyl cholinesterase

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Correct Option: C

Membrane potential of a cell forms

biology coordination generation and conduction of nerve impulse generation of nerve impulse neurons and synapses

  1. Movement of anions into the cell

  2. Movement of cations into the cell

  3. Action of proton pump

  4. Action of an electrogenic pump.

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Correct Option: B

The following are the parts of a neuron:
a) Axon b) Terminal branches c) Cyton d) Dendrites. 
The correct pathway of a nerve impulse through these parts are ________.

biology coordination generation and conduction of nerve impulse generation of nerve impulse neurons and synapses

  1. badc

  2. dcab

  3. bdac

  4. adbc

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Correct Option: A

When a stimulus is applied at a site on the polarized membrane, the membrane at that site becomes freely permeable to (i)_ ions. leading to (ii)_ of the membrane.

biology coordination generation and conduction of nerve impulse generation of nerve impulse neurons and synapses

  1. (i) - Na+, (ii) - depolarisation

  2. (i) - K+, (ii)- depolarisation

  3. (i) - K+, (ii)- depolarisation

  4. (i) - Na+, (ii) - depolarisation

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Correct Option: D