The muscular organ of the circulatory system responsible for pumping blood throughout the body.
Heart
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Blood vessels that carry oxygenated blood away from the heart to the body's tissues.
Arteries
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Blood vessels that carry deoxygenated blood from the body's tissues back to the heart.
Veins
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Tiny blood vessels that connect arteries and veins, facilitating the exchange of nutrients, gases, and waste products between the blood and the tissues.
Capillaries
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Small, bean-shaped organs of the lymphatic system that filter lymph and contain immune cells that help fight infection.
Lymph Nodes
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Small masses of lymphoid tissue located at the back of the throat, responsible for trapping and removing pathogens entering the body through the mouth and nose.
Tonsils
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A lymphoid organ located in the upper chest, responsible for the maturation and activation of certain immune cells.
Thymus
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A small gland located at the base of the brain, responsible for regulating growth, metabolism, and various other physiological processes by secreting hormones.
Pituitary Gland
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A butterfly-shaped gland located in the neck, responsible for producing hormones that regulate metabolism, growth, and development.
Thyroid Gland
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Pair of glands located on top of each kidney, responsible for producing hormones such as cortisol and adrenaline that regulate stress response and metabolism.
Adrenal Glands
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Clusters of cells in the pancreas responsible for producing hormones such as insulin and glucagon that regulate blood sugar levels.
Pancreatic Islets
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Pair of organs located in the abdomen, responsible for filtering waste products from the blood, regulating fluid and electrolyte balance, and producing urine.
Kidneys
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Tubes connecting the kidneys to the bladder, allowing urine to flow from the kidneys to the bladder.
Ureters
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A muscular sac located in the pelvis, responsible for storing urine before it is eliminated from the body.
Bladder
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The tube connecting the bladder to the outside of the body, allowing urine to be eliminated from the body.
Urethra
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Male reproductive organs responsible for producing sperm and testosterone.
