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Questions and Answers
Which of the following is the most potent vasoconstrictor substance?
Which of the following is the most potent vasoconstrictor substance?
- Noradrenaline
- Antidiuretic hormone (correct)
- Angiotensin II
- Adrenaline
What is the primary function of Angiotensin II (Ang II) in the body?
What is the primary function of Angiotensin II (Ang II) in the body?
- To increase urine production
- To stimulate the release of aldosterone (correct)
- To induce thirst responses
- To act as a vasodilator
What is the role of the AT2 receptor in the actions of Angiotensin II?
What is the role of the AT2 receptor in the actions of Angiotensin II?
- It has no clear role in the actions of Ang II
- It mediates the pressor actions of Ang II
- It stimulates the release of antidiuretic hormone
- It opposes the pressor actions of the AT1 receptor (correct)
What is the primary stimulus for the release of antidiuretic hormone (ADH) from the posterior pituitary gland?
What is the primary stimulus for the release of antidiuretic hormone (ADH) from the posterior pituitary gland?
What is the primary effect of noradrenaline (norepinephrine) released from the adrenal medulla?
What is the primary effect of noradrenaline (norepinephrine) released from the adrenal medulla?
What is the primary function of the related Angiotensin peptides (Ang III, Ang IV, Ang 1-7)?
What is the primary function of the related Angiotensin peptides (Ang III, Ang IV, Ang 1-7)?
Which of the following is the primary physiological function of angiotensin II in the regulation of blood flow?
Which of the following is the primary physiological function of angiotensin II in the regulation of blood flow?
Which of the following is the primary mechanism by which antidiuretic hormone (ADH) regulates blood flow?
Which of the following is the primary mechanism by which antidiuretic hormone (ADH) regulates blood flow?
Which of the following is the primary role of the sympathetic nervous system in the regulation of blood flow?
Which of the following is the primary role of the sympathetic nervous system in the regulation of blood flow?
What is the primary function of aldosterone in the regulation of blood flow?
What is the primary function of aldosterone in the regulation of blood flow?
Which of the following is the primary mechanism by which atrial natriuretic peptide (ANP) regulates blood flow?
Which of the following is the primary mechanism by which atrial natriuretic peptide (ANP) regulates blood flow?
Which of the following is the primary role of the renin-angiotensin-aldosterone system (RAAS) in the regulation of blood flow?
Which of the following is the primary role of the renin-angiotensin-aldosterone system (RAAS) in the regulation of blood flow?
Which of the following is NOT a physiological action of angiotensin II mediated through AT1 receptors?
Which of the following is NOT a physiological action of angiotensin II mediated through AT1 receptors?
Which enzyme is responsible for converting angiotensin I to the active form, angiotensin II?
Which enzyme is responsible for converting angiotensin I to the active form, angiotensin II?
Which hormone is primarily responsible for stimulating aldosterone synthesis in the adrenal cortex?
Which hormone is primarily responsible for stimulating aldosterone synthesis in the adrenal cortex?
Which of the following statements about vasoconstrictors is NOT true?
Which of the following statements about vasoconstrictors is NOT true?
Which of the following conditions can trigger the release of renin from the kidneys?
Which of the following conditions can trigger the release of renin from the kidneys?
Which of the following statements about the sympathetic nervous system and angiotensin II is correct?
Which of the following statements about the sympathetic nervous system and angiotensin II is correct?
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