Practice free Body Fluids and Circulation (Zoology) NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
Hepatic poratal system starts from
The hepatic portal system starts from the digestive system and carries nutrient-rich blood to the liver. This allows the liver to process nutrients, detoxify substances, and regulate blood sugar levels.
Which of the following carries glucose from digestive tract to liver (CBSE PMT -1999,BHU-2001)
The hepatic portal vein is responsible for carrying glucose and other nutrients from the digestive tract to the liver. Here, the liver can process these nutrients and regulate their levels in the blood.
Lymph is colourless because (MP PMT - 99)
Which of the following human organs is often called the "graveyard" of RBC? (AIPMT 2012-M)
The spleen is often referred to as the 'graveyard' of RBCs because it is the primary site where old and damaged red blood cells are broken down and removed from the bloodstream. The spleen filters the blood, removing pathogens and old cells, and helps in recycling iron from the hemoglobin.
There is no DNA in
Mature red blood cells (RBCs) in humans do not have a nucleus and, therefore, lack DNA. This adaptation provides more space for hemoglobin, enabling efficient oxygen transport. In contrast, other cells like spermatozoa, hair roots, and ovum contain DNA.
Which of the following is correct for all veins ?
Veins are blood vessels that carry blood toward the heart from various organs and tissues. This is true for both deoxygenated blood (like in systemic veins) and oxygenated blood (like in pulmonary veins). Thus, the correct statement for all veins is that they transport blood from organs to the heart.
How much diastolic pressure is ?
Diastolic pressure is the pressure in the arteries when the heart rests between beats. The normal diastolic pressure for a healthy adult is typically around 80 mmHg.
Which of the following are granular WBCs ? (MANIPAL-02)
Granular white blood cells (WBCs) are characterized by the presence of granules in their cytoplasm. These include Neutrophils, Eosinophils, and Basophils. Lymphocytes and Monocytes are agranular WBCs.
_________is a condition where a blood clot forms in the circulatory system.
A thrombus is a blood clot that forms in the circulatory system. It can obstruct blood flow, leading to various medical conditions. The other options do not correctly describe this condition.
Assertion (A) and Reason (R) type questions A: SAN initiates the heart beat R: Sympathetic nerve fibres increase the cardiac activity
The Sinoatrial Node (SAN) initiates the heartbeat, which is true. However, the sympathetic nerve fibers increase cardiac activity, but this does not explain why the SAN initiates the heartbeat. Therefore, both A and R are true, but R is not a correct explanation of A.
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