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Human bone marrow is the soft tissue found inside bones. It plays a major role in producing blood cells, storing fat, supporting immunity, and keeping the body’s blood system healthy. In simple words, bone marrow is like the blood cell factory of the body

The Golgi apparatus is a cell organelle that modifies, packages, sorts, and transports proteins and other materials inside the cell. It works like the packaging and delivery center of the cell, receiving substances from the endoplasmic reticulum, c...

Human alveoli are tiny air sacs present at the end of the smallest airways in the lungs. They are the main site where gas exchange takes place in the human respiratory system. When we breathe in, oxygen from the air reaches the alveoli and passes into the blood. At the same time, carbon dioxide from the blood moves into the alveoli and is breat...

Alveolar macrophages are special immune cells found inside the alveoli, the tiny air sacs of the lungs where oxygen enters the blood and carbon dioxide leaves the body. Their main job is to protect the lungs from dust particles, microbes, pollutants and other harmful substances that enter with inhaled air. In simple words, alveolar macrophages ...

White blood cells, also called WBCs or leukocytes, are special blood cells that protect the human body from infections, germs, harmful bacteria, viruses, parasites, and foreign substances. They are a major part of the immune system, which works lik...