Complete the analogy. Platelets : Clotting :: White Blood Cells : __________.
Fighting Inflammation
The analogy pairs each type of blood cell with its main physiological role. Platelets (thrombocytes) trigger clot formation at wounds to stop bleeding.
White blood cells (leucocytes) are the immune system's defenders; they engulf pathogens, release cytokines, and drive the inflammatory response that fights infection and injury.
Oxygen transport is carried out by red blood cells (via haemoglobin), joints are connected by ligaments and cartilage, and minerals such as calcium are stored in bones, not by WBCs.
Hence, the missing role is fighting inflammation.
Which part of the human brain controls thinking and learning abilities of a person?
Which type of blood vessel is best suited for rapid exchange of gases and nutrients with body tissues?
Which part of the human eye controls the amount of light entering the eye?
Why is the small intestine able to fit into a compact space within the human body?
Why does the sight of or thought of delicious food make our mouths "water"?
Which acid does our stomach produce and what is its pH?
Which defect occurs when the eye lens loses its ability to focus on near objects due to decreased flexibility?
In human beings, the respiratory pigment that carries oxygen is ______.
Which gas is essential for aerobic respiration in animals?
Match 'Column A' with 'Column B' in context of the muscular layers in blood vessels.
| Column A | Column B |
| (a) Thick tunica media | (i) Vein |
| (b) Smallest vessel diameter | (ii) Artery |
| (c) Large lumen | (iii) Capillary |
| (d) Endothelium | (iv) All blood vessels |
A resting person, usually has a pulse rate between ______ and ______ beats per minute
In humans, neck and head are joined by which joint ?
The human skeleton is composed of around ______ bones at birth.
At which period of life, body undergoes changes leading to reproductive maturity?
Milk is no longer called a balanced diet due to the lack of which one of the following?