Question

Hormonal regulations of cardiac activity involves the hormones ___and ___ secreted by the ___
(a)Epinephrine, norepinephrine, cortex of adrenal glands.
(b)Epinephrine, norepinephrine, medulla of adrenal glands.
(c)Thyroxine, calcitonin, thyroid gland.
(d)Aldosterone, corticosterone, cortex of adrenal glands

Answer 1

Hint: The metabolic backup of the heart to undergo stress and strain including physical demands are achieved by these hormones. Cardiovascular diseases (CVDs) which are high in women with the polycystic ovarian syndrome (PCOS) are due to an imbalance of hormones.

Complete answer:
Hormonal regulations of cardiac activity involve the hormones adrenaline and noradrenaline secreted by the renal medulla.
The renal medulla produces two similar Hormones which are adrenaline( epinephrine) and noradrenaline( norepinephrine) where both have a similar basic effect on the body.
The adrenaline is known as epinephrine while noradrenaline is known as norepinephrine. The major functions of epinephrine and norepinephrine are they boost metabolism for preparing the organisms to tackle special conditions originated by a physical stress like a drop in blood pressure or blood sugar level, anger, anxiety, fear, etc.
All these scenarios demand high energy and metabolism which is given by increasing heart rate and blood pressure along with blood sugar level. Epinephrine and norepinephrine play a key role in a fight-or-flee situation by binding to alpha and beta receptors of the body.
So, the correct answer is Epinephrine, norepinephrine, medulla of adrenal glands.

Note: -Epinephrine and norepinephrine are present in both multicellular and unicellular organisms. It was first isolated by Napoleon Cybulski, who was a Polish physiologist in 1895.
-In medical conditions like anaphylaxis, cardiac arrest, and superficial bleeding adrenaline is used as a medication. It is also used in croups and asthma as Inhaled adrenaline.
-The secondary effects of these treatments include shakiness, anxiety, and sweating, high heart rate, and high blood pressure. For women that are pregnant or are breastfeeding it is not recommended.