Podcast
Questions and Answers
Which receptor type does adrenaline (epinephrine) mainly act on in the heart?
Which receptor type does adrenaline (epinephrine) mainly act on in the heart?
- α2 receptors
- α1 receptors
- β2 receptors
- β1 receptors (correct)
Which receptor type does noradrenaline (norepinephrine) predominantly stimulate in the blood vessels?
Which receptor type does noradrenaline (norepinephrine) predominantly stimulate in the blood vessels?
- α1 receptors (correct)
- β1 receptors
- β2 receptors
- α2 receptors
Which receptor type plays a role in decreasing sympathetic outflow by acting as a negative feedback mechanism?
Which receptor type plays a role in decreasing sympathetic outflow by acting as a negative feedback mechanism?
- β1 receptors
- α1 receptors
- β2 receptors
- α2 receptors (correct)
Which type of receptor subtype is primarily responsible for vasodilation in the blood vessels?
Which type of receptor subtype is primarily responsible for vasodilation in the blood vessels?
Which hormone is involved in the regulation of blood volume and pressure, and acts as an antagonist to the actions of the renin-angiotensin-aldosterone system (RAAS)?
Which hormone is involved in the regulation of blood volume and pressure, and acts as an antagonist to the actions of the renin-angiotensin-aldosterone system (RAAS)?
Which receptor subtype mediates the direct pressor action of Angiotensin II on vascular smooth muscle?
Which receptor subtype mediates the direct pressor action of Angiotensin II on vascular smooth muscle?
Which receptor subtype is primarily responsible for potentiation of sympathetic nervous system activity by Angiotensin II?
Which receptor subtype is primarily responsible for potentiation of sympathetic nervous system activity by Angiotensin II?
Which of the following receptors is involved in the stimulation of aldosterone synthesis by Angiotensin II?
Which of the following receptors is involved in the stimulation of aldosterone synthesis by Angiotensin II?
Which receptor type is NOT directly associated with the physiological actions of Angiotensin II?
Which receptor type is NOT directly associated with the physiological actions of Angiotensin II?
Atrial Natriuretic Peptide (ANP) primarily exerts its effects through which type of receptor?
Atrial Natriuretic Peptide (ANP) primarily exerts its effects through which type of receptor?
Which receptor activation leads to an increase in the force and rate of cardiac contraction?
Which receptor activation leads to an increase in the force and rate of cardiac contraction?
Which receptors mediate vasoconstriction in blood vessels?
Which receptors mediate vasoconstriction in blood vessels?
Which peptide is released in response to an increase in extracellular fluid volume, leading to atrial wall stretch and regulation of blood volume and pressure?
Which peptide is released in response to an increase in extracellular fluid volume, leading to atrial wall stretch and regulation of blood volume and pressure?
Which type of nerve supply leads to vasodilatation in the genitalia?
Which type of nerve supply leads to vasodilatation in the genitalia?
Which receptors, when activated, lead to vasodilatation in blood vessels?
Which receptors, when activated, lead to vasodilatation in blood vessels?
Which of the following receptors is responsible for causing constriction of large arteries and veins, and increasing the permeability of venules?
Which of the following receptors is responsible for causing constriction of large arteries and veins, and increasing the permeability of venules?
Which autocoid is considered the most potent in pain responses, similar to histamine and serotonin?
Which autocoid is considered the most potent in pain responses, similar to histamine and serotonin?
Which enzyme inactivates bradykinin, thus decreasing its physiological half-life?
Which enzyme inactivates bradykinin, thus decreasing its physiological half-life?
Which neurotransmitter contributes to inflammatory responses and also released from argentaffin cells in the intestine?
Which neurotransmitter contributes to inflammatory responses and also released from argentaffin cells in the intestine?
Which substance helps in controlling gastric acid secretion through H2 receptors?
Which substance helps in controlling gastric acid secretion through H2 receptors?
