Examlex
The second line of defense is a series of systems that involves both cells and chemicals working together.
Hilum
Indented surface on many organs, serving as a point where nerves and vessels enter or leave.
Glomerulus
A cluster of blood vessels in the kidney that filters blood, initiating the process of urine formation.
Capillaries
The smallest blood vessels in the body's circulatory system, responsible for the exchange of oxygen, carbon dioxide, and other substances between blood and tissues.
Bowman Capsule
A double-layered structure surrounding the glomerulus of each nephron in the kidneys, involved in filtration of blood to form urine.
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