Podcast
Questions and Answers
Which hormone is one of the most potent vasoconstrictor substances?
Which hormone is one of the most potent vasoconstrictor substances?
- Angiotensin II (correct)
- Adrenaline
- Angiotensin III
- Noradrenaline
What is the primary site of formation for vasopressin (ADH)?
What is the primary site of formation for vasopressin (ADH)?
- Posterior pituitary gland
- Anterior pituitary gland
- Hypothalamus (correct)
- Adrenal medulla
Which receptor opposes the pressor actions of the AT1 receptor?
Which receptor opposes the pressor actions of the AT1 receptor?
- α-adrenergic receptor
- β-adrenergic receptor
- AT2 receptor (correct)
- Atrial B receptor
Which component constitutes 80% of the hormones produced by the adrenal medulla?
Which component constitutes 80% of the hormones produced by the adrenal medulla?
When is vasopressin (ADH) released into circulation?
When is vasopressin (ADH) released into circulation?
Which hormone reduces urine formation by the kidney?
Which hormone reduces urine formation by the kidney?
What is the main physiological action of angiotensin II through AT1 receptors?
What is the main physiological action of angiotensin II through AT1 receptors?
Which hormone increases sodium and water reabsorption from the kidney?
Which hormone increases sodium and water reabsorption from the kidney?
What is the enzyme responsible for converting angiotensin I to angiotensin II in the lungs?
What is the enzyme responsible for converting angiotensin I to angiotensin II in the lungs?
Which of the following is NOT a physiological action of angiotensin II through AT1 receptors?
Which of the following is NOT a physiological action of angiotensin II through AT1 receptors?
Which hormone is secreted by the kidney in response to low arterial pressure or reduced extracellular fluid volume?
Which hormone is secreted by the kidney in response to low arterial pressure or reduced extracellular fluid volume?
What is the main effect of aldosterone on the kidney?
What is the main effect of aldosterone on the kidney?
Which vasoconstrictor is responsible for causing hypotension and anaphylactic shock in severe conditions?
Which vasoconstrictor is responsible for causing hypotension and anaphylactic shock in severe conditions?
Which endothelial vasoconstrictor contributes to inflammatory responses and increases the permeability of venules?
Which endothelial vasoconstrictor contributes to inflammatory responses and increases the permeability of venules?
Which molecule inactivates bradykinin in the body, decreasing its physiological half-life?
Which molecule inactivates bradykinin in the body, decreasing its physiological half-life?
Which neurotransmitter acts as a vasodilator, increasing capillary permeability and attracting leucocytes?
Which neurotransmitter acts as a vasodilator, increasing capillary permeability and attracting leucocytes?
Which vasoconstrictor is responsible for causing constriction of large arteries and veins?
Which vasoconstrictor is responsible for causing constriction of large arteries and veins?
Which molecule plays a role in the local regulation of blood flow when released from argentaffin cells in the intestine?
Which molecule plays a role in the local regulation of blood flow when released from argentaffin cells in the intestine?
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