Question

Norepinephrine hormone is secreted from
(a) zona glomerulosa (b) zona fasiculata
(c) zona reticularis (d) medulla of adrenal

Answer 1

Answer:

Norepinephrine is secreted from

"Adrenal Medulla"

Norepinephrine is an polypeptide hormone also called the stress hormone.

It's major functions are as follows:

• It increases the blood pressure in case of hypotension
• It stimulates heart and increases the heart rate.

Additional information on Norepinephrine:

1. It is secreted from the adrenergic nerve terminals.

2. It mainly acts on the following receptors

• α1 , α2
• β1 receptors

3. It is formed after metabolism of Amino acid Tyrosine.

4. It is catabolized by the following enzymes:

• Chatechol - O- Methyl transferase
• Monoamine oxidase.

Answer 2

$\huge\bold\red{D-) medulla of adrenal}$

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