Question

Mention one function of adrenaline hormone.

• A. Adrenaline increases blood volume and supply of blood to various organs.
• B. Adrenaline increases heart rate and supply of carbon dioxide to various organs.
• C. Adrenaline increases heart rate and supply of blood to various organs.
• D. Adrenaline decreases heart rate and supply of blood to various organs.

Answer 1

The correct option is C Adrenaline increases heart rate and supply of blood to various organs.

• Adrenaline and noradrenaline hormones are secreted by the adrenal medulla part of the adrenal gland.
• Adrenaline and noradrenaline are rapidly secreted in response to the stress of any kind and during emergency situations and are called emergency hormones or hormones of Fight or Flight. Both the hormones increase the heart rate supply of blood, the strength of heart contraction and the rate of respiration.
• Hence Adrenaline increases heart rate and supply of blood to various organs is a correct statement.
• So, the correct answer is 'Adrenaline increases heart rate and supply of blood to various organs'.