Hemodynamics and Peripheral Vascular Function
- Previous year questions on Hemodynamics and Peripheral Vascular Function for NEET PG (National Eligibility cum Entrance Test - Postgraduate), from the Physiology section of the exam.
- Most questions here come from previous-year papers of Indian postgraduate medical entrance and licensing exams; where a paper and year are recorded the question carries them. The image-based questions are original vignettes written around an openly licensed figure, and were never asked in any exam.
- 94 live questions in Hemodynamics and Peripheral Vascular Function.
- 2 of 94 questions carry a verified exam year: 2017.
- Physiology is worth about 17 of 300 questions on the exam. See every subject’s weightage.
- Question set last updated 6 Sept 2026.
Q1.A 60 - year - old patient, known case of hypertension for the past 25 years underwent renal artery Doppler which showed narrowing and turbulence in right renal artery. If radius of artery is reduced to one - third, resistance increases by_____.
- A3 times
- B9 times
- C25 times
- D81 times✓ Correct answer
Q2.Blood is flowing through a circuit with an inflow pressure of 100 mm Hg and an outflow pressure of 10 mm Hg. Each of the parallel circuits (R1, R2, R3, R4 and R5) has a resistance of 5 mm Hg/mL/min. What is the blood flow across this circuit?
- A3.6 ml/min
- B45 ml/min
- C90 ml/min✓ Correct answer
- D135 ml/min
Q3.A 32-year-old patient has a pulmonary vascular resistance of 4 mm Hg/L per minute and a cardiac output of 5 L/min. What is her driving pressure for moving blood through the pulmonary circulation?
- A10 mm Hg
- B15 mm Hg
- C20 mm Hg✓ Correct answer
- D30 mm Hg
Q4.Regulation of blood flow is maintained by
- AArteries
- BVenules
- CCapillaries
- DArterioles✓ Correct answer
Q5.At a constant blood flow, an increase in the number of perfused capillaries improves the exchange between blood and tissue because of
- AGreater surface area for the diffusion of molecules✓ Correct answer
- BFaster flow velocity of plasma and red blood cells in capillaries
- CIncreased permeability of the microvasculature
- DDecreased concentration of chemicals in the capillary blood
Q6.Blood is flowing through a circuit with an inflow pressure of 100 mmHg and an outflow pressure of 10 mm Hg. Each of the parallel circuits (R1, R2, R3, R4, and R5) has a resistance of 5 mm Hg/mL/min. What is the blood flow across this circuit?
- A3.6 ml/min
- B45 ml/min
- C90 ml/min✓ Correct answer
- D135 ml/min
Q7.Equilibrium pressure in the absence of flow pressure is called
- AMean circulatory filling pressure✓ Correct answer
- BCritical closing pressure
- CPerfusion pressure
- DPulse pressure
Q8.Poiseuille's Hagen law is
- AF = (PA-PB) X 3.14 X r^4/8nl✓ Correct answer
- BF = (PA+PB) X 3.14 X r^4/8nl
- CF = (PA/PB) X 3.14 X r^4/8nl
- DF = (PA X PB) X 3.14 X r^4/8nl
Q9.Equilibrium pressure in the absence of flow pressure is called
- AMean circulatory filling pressure✓ Correct answer
- BCritical closing pressure
- CPerfusion pressure
- DPulse pressure
Q10.The first step for lymphatic vessels to remove excess fluid from interstial tissue spaces is by
- AGenerating a lower intravascular than tissue hydrostatic pressure✓ Correct answer
- BContracting and forcing lymph into larger lymphatics
- COpening and closing one-way valves in the lymph vessels
- DLowering the colloid osmotic pressure inside the lymph vessel
Answer key
Q1: D. 81 times; Q2: C. 90 ml/min; Q3: C. 20 mm Hg; Q4: D. Arterioles; Q5: A. Greater surface area for the diffusion of molecules; Q6: C. 90 ml/min; Q7: A. Mean circulatory filling pressure; Q8: A. F = (PA-PB) X 3.14 X r^4/8nl; Q9: A. Mean circulatory filling pressure; Q10: A. Generating a lower intravascular than tissue hydrostatic pressure.
Other topics in Physiology
- Homeostasis and Cell Function
- Receptors and Intracellular Signalling
- Membrane Transport Mechanisms
- Resting and Action Membrane Potentials
- Body Fluid Compartments
- Blood Composition, Hemostasis and Blood Groups
- Nerve Conduction and Excitability
- Skeletal Muscle: Structure and Excitation-Contraction Coupling
- Smooth and Cardiac Muscle Mechanics
- Synaptic and Neuromuscular Transmission
- Neurotransmitters
- Sensory Receptors and Transduction
- Ascending Somatosensory Tracts
- Vision, Hearing, Taste and Smell
- Motor Control: Spinal Reflexes and Lower Motor Neurons
- Motor Control: Descending Pathways and Cortical Control
- Cerebellar and Basal Ganglia Function
- Limbic System and Hypothalamic Control
- Cortical Functions, Sleep and Memory
- Autonomic Nervous System
- Functional Anatomy of the Airways
- Mechanics of Breathing
- Diffusion Across the Alveolar Membrane
- Oxygen and Carbon Dioxide Carriage
- Spirometry and Lung Volumes
- Respiratory Adaptation to Hypoxia, Anemia and Pressure Extremes
- Control of Ventilation
- Regional Circulations: Coronary, Cerebral and Splanchnic
- The Cardiac Cycle and Determinants of Output
- Cardiac Electrophysiology and the ECG
- Arterial Pressure and Its Regulation
- GI Secretions and Gut Hormones
- Digestion and Nutrient Absorption
- Gut Motility and Peristalsis
- Renal Blood Flow, Filtration and Clearance
- Tubular Transport and Urinary Concentration
- Acid-Base Handling, Renal Hormones and Micturition
- Pituitary and Thyroid Function
- Endocrine Pancreas
- Adrenal Cortex and Medulla
- Calcium and Phosphate Regulation
- Male Reproductive Function
- Female Reproductive Function and the Menstrual Cycle
- Physiology of Exercise