Tag: nervous system

Questions Related to nervous system

Which nerve fibres supply the stomach and intestine?

zoology nervous system nervous systems involved in emotions types of nervous system components of nervous system

  1. Sympathetic nerve fibres

  2. Parasympathetic nerve fibres

  3. Parasympathetic and sympathetic nerve fibres

  4. None of the above

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Correct Option: C

A polypeptide that regulates hunger is

zoology nervous system nervous systems involved in emotions types of nervous system components of nervous system

  1. Endorphin

  2. Encephalin

  3. Insulin

  4. None of the above

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Correct Option: A
Explanation:
Endomorphins are the chemical substance which is present in the neurons. It helps in the perception of pain, reactions to stress, and cardiovascular, respiratory and digestive functions. They are produced within the body so they are known as endogenous. They specifically work by binding to opoid receptors which are mainly found in nervous system and regulates the motor neurons and autonomic nervous system. The regulation of sympathetic and parasympathetic chain helps to control hunger.
So, the correct answer is option A.

Autonomic nervous system affects 

zoology nervous system nervous systems involved in emotions types of nervous system components of nervous system

  1. Reflex actions

  2. Internal organs

  3. Sensory organs

  4. Motor organs

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Correct Option: B

Intercellular communication in multicellular organisms occur through

zoology nervous system nervous systems involved in emotions types of nervous system components of nervous system

  1. Digestive system

  2. Nervous system

  3. Both-nervous and endocrine systems

  4. Respiratory system only

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Correct Option: C

One function of parasympathetic nervous system is

zoology nervous system nervous systems involved in emotions types of nervous system components of nervous system

  1. Contraction of rectum

  2. Inhibits salivation

  3. Acceleration of heart beat

  4. Constriction of pupil

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Correct Option: D
Explanation:

The parasympathetic nervous system, or PSNS, is a part of the nervous system. The nervous system sends signals to and from different parts of the body via nerves. The PSNS is responsible for all the activities that take place when the body is at rest. During a period of flight and fight, the pupils dilate to allow us to see more clearly and make faster decisions. During rest and digest, the PSNS causes the pupils to constrict.

So, the correct option is ' Constriction of pupil '.

The only bone marrow cell that never appears in peripheral blood is

zoology nervous system nervous systems involved in emotions types of nervous system components of nervous system

  1. Myeloblast

  2. Myelocyte

  3. Lymphoblast

  4. Megaloblast.

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Correct Option: A

Who discovered autonomic nervous system and its components?

zoology nervous system nervous systems involved in emotions types of nervous system components of nervous system

  1. Langley

  2. Sherington

  3. Pavlov

  4. Mc Lennan

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Correct Option: A

Autonomic nervous system controls

zoology nervous system nervous systems involved in emotions types of nervous system components of nervous system

  1. Reflex actions

  2. Sense organs

  3. Internal organs

  4. Skeletal muscles

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Correct Option: C

Sympathetic nervous system is also called

zoology nervous system nervous systems involved in emotions types of nervous system components of nervous system

  1. Visceral

  2. Thoracico-lumbar

  3. Cranio-sacral

  4. Mesenteric

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Correct Option: B

Sympathetic nerves in mammals develop from

zoology nervous system nervous systems involved in emotions types of nervous system components of nervous system

  1. Sacral region

  2. Cervical region

  3. Thoracico-lumbar region

  4. 3rd, 7th, 9th and 10th cranial nerves

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Correct Option: C