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HCS (Haryana)Prelims2024General Studies

Question

Consider the following statements Which of the following functions is/are influenced by adrenalin? 1. Increase the heart beat 2. More Oxygen supply to muscles 3. Increased supply of blood to the digestive system. 4. Breathing rate declines: How many of the statement given above are correct

Options

  1. A 1, 2, 3 and 4
  2. B 1 and 2 only
  3. C 1, 2 and 3 only
  4. D 1 only
Show Answer

Correct Answer

B 1 and 2 only

Model Answer

  • Adrenaline, also known as epinephrine, is a hormone and neurotransmitter produced by the adrenal glands. It plays a crucial role in the body's "fight or flight" response to stress.
  • Functions of Adrenaline:

Increases Heart Rate

  • Adrenaline stimulates the heart to beat faster and with greater force. Hence, statement 1 is correct.
  • This increases blood flow to vital organs and muscles, preparing the body for rapid physical action.

Dilates Airways

  • It relaxes the smooth muscles in the airways, leading to bronchodilation.
  • Enhances oxygen intake and improves respiratory efficiency during stress or physical exertion. Hence, Statement 4 is incorrect.

Boosts Blood Glucose Levels

  • Stimulates the liver to break down glycogen into glucose and release it into the bloodstream.
  • Provides a quick source of energy to muscles and other tissues. Hence, Statement 2 is correct.

Increases Blood Pressure

  • Causes vasoconstriction (narrowing of blood vessels), leading to an increase in blood
  • Ensures efficient delivery of oxygen and nutrients to critical areas of the body.
  • Enhances Mental Alertness:
  • Improves focus, concentration, and reaction time.
  • Helps the body respond more effectively to immediate threats or challenges.

Reduces Digestive Activity

  • Inhibits digestive processes by diverting blood flow away from the digestive organs. Hence, Statement 3 is incorrect.
  • Conserves energy and directs it towards muscles and vital organs needed for a quick response.

Promotes Lipolysis

  • Stimulates the breakdown of fat stores into fatty acids and glycerol.
  • Provides additional energy sources for muscle activity and other functions.

Regulates Blood Flow

  • Alters blood flow distribution by constricting or dilating blood vessels in various parts of the body.
  • Prioritizes blood flow to essential areas like the heart and muscles while reducing it to less critical areas.

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2024 — Consider the following statements Which of the following… | Dr. Amit IAS Academy