R Roshan 🎓 Invincible ⭐ 580 Points 📊 Biology Q. What is the primary determinant of systolic blood pressure? (A) Heart rate (B) Cardiac output (C) Blood viscosity (D) Respiration rate 👁️ Show Answer 💬 Discuss 🔗 Share ✅ Correct Answer: (B) Cardiac output Explanation: Systolic pressure is mainly influenced by the amount of blood pumped by the heart (cardiac output).
R Roshan 🎓 Invincible ⭐ 580 Points 📊 Biology Q. Which factor mainly influences diastolic blood pressure? (A) Cardiac output (B) Peripheral resistance (C) Oxygen level (D) Body temperature 👁️ Show Answer 💬 Discuss 🔗 Share ✅ Correct Answer: (B) Peripheral resistance Explanation: Diastolic pressure depends largely on the resistance in the blood vessels.
R Roshan 🎓 Invincible ⭐ 580 Points 📊 Biology Q. Which condition is defined as BP below 90/60 mmHg? (A) Hypertension (B) Hypotension (C) Normotension (D) Prehypertension 👁️ Show Answer 💬 Discuss 🔗 Share ✅ Correct Answer: (B) Hypotension Explanation: Blood pressure below 90/60 mmHg is considered hypotension.
R Roshan 🎓 Invincible ⭐ 580 Points 📊 Biology Q. Which mechanism helps regulate long-term blood pressure? (A) Nervous system (B) Endocrine system (C) Renal system (D) Digestive system 👁️ Show Answer 💬 Discuss 🔗 Share ✅ Correct Answer: (C) Renal system Explanation: The kidneys regulate blood volume and sodium balance, controlling BP over time.
R Roshan 🎓 Invincible ⭐ 580 Points 📊 Biology Q. Which substance increases blood pressure by causing vasoconstriction? (A) Nitric oxide (B) Angiotensin II (C) Insulin (D) Melatonin 👁️ Show Answer 💬 Discuss 🔗 Share ✅ Correct Answer: (B) Angiotensin II Explanation: Angiotensin II is a powerful vasoconstrictor that raises blood pressure.
R Roshan 🎓 Invincible ⭐ 580 Points 📊 Biology Q. What is the role of aldosterone in BP regulation? (A) Decreases sodium retention (B) Increases sodium and water retention (C) Decreases heart rate (D) Dilates blood vessels 👁️ Show Answer 💬 Discuss 🔗 Share ✅ Correct Answer: (B) Increases sodium and water retention Explanation: Aldosterone increases blood volume by promoting sodium and water reabsorption.
R Roshan 🎓 Invincible ⭐ 580 Points 📊 Biology Q. Which condition leads to sudden severe increase in BP? (A) Hypotension (B) Hypertensive crisis (C) Bradycardia (D) Anemia 👁️ Show Answer 💬 Discuss 🔗 Share ✅ Correct Answer: (B) Hypertensive crisis Explanation: A hypertensive crisis is a rapid and dangerous rise in blood pressure.
R Roshan 🎓 Invincible ⭐ 580 Points 📊 Biology Q. Which artery is commonly used to feel pulse? (A) Brachial artery (B) Radial artery (C) Femoral artery (D) Carotid artery 👁️ Show Answer 💬 Discuss 🔗 Share ✅ Correct Answer: (B) Radial artery Explanation: The radial artery at the wrist is commonly used to check pulse.
R Roshan 🎓 Invincible ⭐ 580 Points 📊 Biology Q. Which condition causes narrowing of arteries due to plaque? (A) Hypertension (B) Atherosclerosis (C) Hypotension (D) Arrhythmia 👁️ Show Answer 💬 Discuss 🔗 Share ✅ Correct Answer: (B) Atherosclerosis Explanation: Plaque buildup narrows arteries, increasing resistance and BP.
R Roshan 🎓 Invincible ⭐ 580 Points 📊 Biology Q. Which component of blood pressure is measured when the cuff deflates? (A) Diastolic only (B) Systolic only (C) Both systolic and diastolic (D) Pulse only 👁️ Show Answer 💬 Discuss 🔗 Share ✅ Correct Answer: (C) Both systolic and diastolic Explanation: Both systolic and diastolic pressures are determined during cuff deflation.