Prepare for NEET Biology Body Fluids And Circulation (Circulatory Pathways) with MCQs & PYQs on NEET.GUIDE. Access free practice, previous year questions, and expert guidance to compare open and closed circulatory systems.
NEET Questions / Zoology / Body Fluids And Circulation / Circulatory Pathways
A patient presents with severe edema in the lower extremities. Upon examination, it's found that their lymphatic system is compromised, but their venous return is normal. Which of the following best explains this observation?
Lymphatic blockage prevents the return of interstitial fluid, leading to fluid accumulation in the tissues.
Venous insufficiency is the primary cause of edema, and the lymphatic system plays a minor role.
The lymphatic system is responsible for filtering blood, and its impairment leads to increased blood pressure and edema.
The compromised lymphatic system causes increased capillary permeability, leading to fluid leakage and edema.
A researcher is studying the circulatory system of a newly discovered species. They observe that the blood is oxygenated in the respiratory organ and then passes directly to the systemic circulation, without returning to the heart. What type of circulatory system does this species likely have?
Double Circulation
Single Circulation
Incomplete Double Circulation
Pulmonary Circulation
Which statement BEST describes the function of the hepatic portal system?
It carries oxygenated blood from the aorta to the liver.
It bypasses the liver and delivers blood directly to the inferior vena cava.
It carries nutrient-rich blood from the digestive tract to the liver for processing before entering systemic circulation.
It drains deoxygenated blood from the liver and returns it to the heart.
In a healthy individual, which of the following blood vessels would have the lowest blood pressure?
Aorta
Pulmonary Artery
Arterioles
Vena Cava
The ductus arteriosus in a fetus connects which two blood vessels?
Superior vena cava and inferior vena cava
Pulmonary artery and pulmonary vein
Pulmonary artery and aorta
Aorta and inferior vena cava
Which physiological change would MOST directly increase the net filtration pressure in the capillaries, leading to edema?
Decreased interstitial fluid pressure
Increased plasma protein concentration
Increased blood pressure in the arterioles
Decreased capillary permeability
Which of the following carries oxygenated blood?
Pulmonary artery
Vena cava
Hepatic portal vein
Pulmonary vein
The blood vessel that carries deoxygenated blood from the heart to the lungs is the:
Aorta
Pulmonary vein
Pulmonary artery
Carotid artery
Which chamber of the heart receives oxygenated blood from the lungs?
Right atrium
Right ventricle
Left ventricle
Left atrium
The systemic circulation carries blood from the heart to:
Only the brain
Only the digestive system
All parts of the body except the lungs
Only the lungs
