Biology · General Awareness

Human Circulatory System

818 Questions

The human circulatory system explores the network of blood vessels, heart valves, and structural pathways. Test items often target blood flow sequences and specific vascular functions. Mastering these details is vital for biology preparation.

Heart valves and chambersBlood vessels and venulesArteries of the bodyBlood supply to organsCentral nervous system supply

Human Circulatory System Questions

Multiple choice biology transport in mammals cardiac cycle heart, blood vessels and cardiac cycle human heart

The pulmonary artery carries 

  1. Deoxygenated blood to the lungs

  2. Oxygenated blood to brain

  3. Oxygenated blood to the lungs

  4. Deoxygenated blood to the kidney
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
  • Blood enters the heart through two large veins, the inferior and superior vena cava brought from different parts of the body.
  • This oxygen-deficient blood from the body is emptied into the right atrium of the heart which is further pumped to the right ventricle. 
  • As the right ventricle contracts, blood is pumped into the pulmonary artery and to the lungs where it is oxygenated.
  • Thus, the pulmonary arteries carry deoxygenated blood from the right ventricles to the lungs. So, the correct answer is 'Deoxygenated blood to the lungs'.
Multiple choice biology transport in mammals cardiac cycle heart, blood vessels and cardiac cycle human heart

Fill in the blanks with suitable words given below:
The_______ artery takes the blood from the ventricles to the lungs.

  1. Serum

  2. Fibrinogen

  3. Hemoglobin

  4. Pulmonary

  5. Sphygmomanometer

  6. Ventricles
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The pulmonary artery is the artery that carries blood from the right ventricle of the heart to the lungs for oxygenation. It is involved in the pulmonary circulation of the cardiovascular system.

Hence, the correct answer is 'Pulmonary'.

Multiple choice biology transport in mammals cardiac cycle heart, blood vessels and cardiac cycle human heart

Choose the correct answer from the alternatives given.
Blood travels from heart to lungs byway of the:

  1. Pulmonary artery

  2. Pulmonary vein

  3. Anterior vena cava

  4. Posterior vena cava
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

  • Pulmonary artery and the Pulmonary vein are a set of blood vessels that are related to the lungs. 
  • The Pulmonary artery carries deoxygenated blood from the right ventricle to the lungs for oxygenation, this oxygenated blood is carried back to the heart by the Pulmonary vein for systemic circulation i.e. for ​circulation to different parts of the body.
So, the correct option is 'Pulmonary artery'.

Multiple choice biology transport in mammals cardiac cycle heart, blood vessels and cardiac cycle human heart

Pulmonary artery originates from the:

  1. right ventricle

  2. left ventricle

  3. right auricle

  4. left auricle
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Pulmonary artery and the Pulmonary vein are a set of blood vessels that are related to the lungs. The Pulmonary artery carries deoxygenated blood from the right ventricle to the lungs for oxygenation, this oxygenated blood is carried back to the heart by the Pulmonary vein for systemic circulation i.e. for ​circulation to different parts of the body.

So, the correct option is 'Right Ventricle'.

Multiple choice biology transport in mammals cardiac cycle heart, blood vessels and cardiac cycle human heart

When the right ventricle of heart of man contracts then blood is pumped into

  1. Superior vena cava

  2. Dorsal aorta

  3. Pulmonary artery

  4. Pulmonary vein
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The pulmonary artery is the vessel transporting de-oxygenated blood from the right ventricle to the lungs. Deoxygenated blood from the systemic circulation enters the right atrium from the superior and inferior venae cavae and passes to the right ventricle. From here it is pumped into the pulmonary circulation through the pulmonary artery, to the lungs where it receives oxygen and gives off carbon dioxide. 

So, the correct answer is option C.

Multiple choice biology transport in mammals cardiac cycle heart, blood vessels and cardiac cycle human heart

Choose correct alternative in the following statements:
The only artery which carries deoxygenated blood is called

  1. Hepatic artery

  2. Pulmonary artery

  3. Aorta

  4. Renal artery
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

  • The only artery which carries deoxygenated blood is called the pulmonary artery. It carries deoxygenated blood from the right ventricle into the lungs for oxygenation. 
  • Hepatic artery is a short blood vessel that supplies oxygenated blood to the liver.
  • Aorta is the largest artery in the body. It carries oxygenated blood from left ventricle to the other parts of the body.
  • Renal artery carries oxygenated blood to kidneys.
Hence, the correct answer is 'Pulmonary artery'.

Multiple choice biology transport in mammals cardiac cycle heart, blood vessels and cardiac cycle human heart

Choose the correct answer from the alternatives given.
Which of the following blood vessels carries oxygen poor blood from the heart to lungs?

  1. Pulmonary vein

  2. Pulmonary artery

  3. Carotid artery

  4. Aorta
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Pulmonary veins are responsible for carrying oxygenated blood from the lungs back to the left atrium of the heart. The pulmonary artery is responsible for transporting oxygen-depleted blood away from the heart and back toward the lungs. Carotid artery is present in the neck region and supply blood to the brain, neck, and face. The aorta is the artery that carries blood away from the heart to the rest of the body. So, the correct option is 'Pulmonary artery'.

Multiple choice biology transport in mammals cardiac cycle heart, blood vessels and cardiac cycle human heart

Choose the correct answer from the alternatives given.
Which of the following parts of the heart pumps blood to lungs?

  1. Left atrium

  2. Right atrium

  3. Left ventricle

  4. Right ventricle
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Right atrium is just below the right atrium and receives deoxygenated blood from the right atrium and then pumps this deoxygenated blood to the lungs through the pulmonary artery.

So, the correct option is 'Right atrium'.

Multiple choice biology soldiers of defense human lymphatic system lymph and its function lymph and tissue fluid

In the human circulation, the lymph

  1. Transports oxygen to brain
  2. Transports $CO _2$ to lungs

  3. Returns interstitial fluid back to heart

  4. Contains RBCs, leucocyte, and more protein as compared to blood
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Lymphatic system is a network present throughout all tissues in the body. It removes wastes, bacteria and excess water from the tissue fluid. The fluid present in the lymphatic vessels is called as lymph. In lymph, escaped blood cells and proteins are collected and returned back to the heart in the form of interstitial fluid. Interstitial fluid is a fluid that bathes the cells of multicellular animals.

Thus, the correct answer is 'Returns interstitial fluid back to heart.'