Human immune system Some organs of the immune system are called lymphoid organs, because they are a home to lymphocytes which are the main components of the lymphatic system, The parts of the immune...
Adrenal (suprarenal) glands They are two glands, where each one of them is located above one of the two kidneys, Each gland consists anatomically and physiologically of two regions which are: the outer part...
Alkali metals are elements that are not found in nature in a free state, but rather in the form of ionic compounds because these metals easily lose their valence electron and they are the...
Risks of blood transfusion When the transfused blood to a person is incompatible with his blood group , Some symptoms appear on him, Such as Shiver, Headache, Chest pains, Breathlessness, Blueness, Tachycardia, Hypotension and...
What is blood cancer? The blood cancers or the hematologic cancers affect the production and function of your blood cells, Most of these cancers start in your bone marrow where the blood is produced,...
Hormones in the human body Hormone is a chemical substance ( or a chemical message ) that controls and organizes most of the vital activities and functions in the bodies of living organisms ,...
