Latest questions in this category.
The lymphatic system absorbs fats through lacteals present in the small intestine.
Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Lymph and Circulatory Pathways
The trachea is a part of the respiratory system, not the lymphatic system.
Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Lymph and Circulatory Pathways
Neutrophils are the primary phagocytic cells that engulf pathogens as part of the immune response.
Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Lymph and Circulatory Pathways
Humans possess a closed circulatory system, in which blood always remains confined within blood vessels. The human heart is four-chambered and exhibits double circulation.
Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Lymph and Circulatory Pathways
The lymphatic system does not transport respiratory gases. Oxygen and carbon dioxide are transported mainly by red blood cells and plasma.
Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Lymph and Circulatory Pathways
Neutrophils are the most abundant WBCs, constituting about 60-65% of total WBC count.
Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Lymph and Circulatory Pathways
Hemoglobin binds with oxygen in the lungs and transports it to body tissues.
Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Lymph and Circulatory Pathways
Cardiac muscle fibers are uninucleated, unlike skeletal muscle fibers, which are multinucleated.
Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Lymph and Circulatory Pathways
Anemia is a condition where there is a deficiency of red blood cells or hemoglobin in the blood.
Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Lymph and Circulatory Pathways
Blood pressure is measured using a sphygmomanometer. Normal BP is 120/80 mmHg, not 150/100 mmHg.
Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Lymph and Circulatory Pathways
Most WBCs have a shorter lifespan than RBCs, except for some memory lymphocytes that persist for years.
Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Lymph and Circulatory Pathways
The circulatory system transports hormones but does not synthesize them; hormones are produced by endocrine glands.
Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Lymph and Circulatory Pathways
