CBSE Questions for Class 11 Medical Biology Body Fluids And Circulation Quiz 6 - MCQExams.com

A.Correct option - A
B.Explanation for correct option -A

• Platelets are tiny cell fragments that are found within our blood.
• The primary responsibility of the platelets is to stop the bleeding when there is an injury to the body.
• A barrier called a blood clot must be formed to seal the wound.
• Just like a leaking pipe must be plugged, a damaged blood vessel must be blocked so that there is no excessive blood loss. 

• As the blood passes through the capillaries in tissues, some water along with many small water-soluble substances, move out into the spaces between the cells of tissues, leaving the larger proteins and most of the formed elements in the blood vessels. 
• This fluid released out is called the interstitial fluid or tissue fluid. It has the same mineral distribution as that in plasma. 
• The exchange of nutrients, gases, etc., between the blood and the cells, always occurs through this fluid. 
• An elaborate network of vessels called the lymphatic system collects this fluid and drains it back to the major veins. 
• The fluid present in the lymphatic system is called lymph. Lymph is a colorless fluid containing specialized lymphocytes which are responsible for the immune responses of the body. Lymph is also an important carrier for nutrients, hormones, etc. 
• Fats are absorbed through lymph in the lacteals present in the intestinal villi.
• So, we can conclude that tissue fluid and lymph both help in transportation along with blood.

• The hepatic system is so named since it connects capillaries of the intestine and other digestive organs to modified capillaries (hepatic sinusoids) of the liver.
• Its main function is to deliver deoxygenated nutrient-rich blood to the liver to be detoxified further before it returns to the heart.

• Lymph has a similar composition to blood plasma and when initially formed, lymph is relatively colourless. Depending on where the lymph travels, the lymph will contain different concentrations of lymphocytes, proteins and fats. Lymph contains a variety of substances, including proteins, salts, glucose, fats, water, and white blood cells. Unlike blood, lymph does not normally contain any red blood cells.
• Blood plasma is composed of plasma, RBC, WBC and platelets.
• In blood, the serum  is the component that is neither a blood cell (serum does not contain white or red blood cells) nor a clotting factor; it is the blood plasma with the fibrinogens removed.

• The lymph is formed when the interstitial fluid is collected through lymph capillaries. It contains a variety of substances, including proteins, salts, glucose, fats, water, and white blood cells. 
• Unlike blood, Lymph does not contain RBCs and platelets.
• The composition of lymph varies a great deal, depending on where in your body it originated. In the lymphatic vessels of your arms and legs, lymph is clear and transparent, and its chemical composition is similar to blood plasma (the liquid portion of blood). 
• However, lymph contains less protein, glucose, and metabolic waste than plasma.  
• The blood is composed of RBC, WBC, and platelets scattered in plasma.

• Hypertension is caused due to an elevation in the pressure applied during the blood flow in the blood vessels. 
• Normal blood pressure at rest is within the range of 100–140 millimetres mercury (mmHg) systolic and 60–90 mmHg diastolic. 
• Hypertension is present if the blood pressure is persistently at or above 140/90 mmHg for most adults. 

• Haemophilia is a group of hereditary genetic disorders in which the body's blood clotting ability fails to stop bleeding if any cut happens.
• Thus, it is also known as bleeder's disease. One type of haemophilia called haemophilia A happens due to the deficiency of blood clotting factor VIII.