Urinary System and Kidney Function

Homeostasis

• Maintaining a stable internal environment.

• Adapting to external changes.

• Increasing metabolic rate.

• Decreasing body temperature.

Secretion

• Movement of waste from the blood into urine.

• Absorption of nutrients from the intestines into the blood.

• Filtration of blood in the kidneys.

• Excretion of carbon dioxide from the lungs.

Collecting Duct

• Carries urine to the ureter.

• Filters blood to form urine.

• Reabsorbs water and salts.

• Produces hormones related to kidney function.

Filtration

• The process of adding nutrients to the blood.

• The removal of waste and excess substances from the blood.

• The absorption of oxygen in the lungs.

• The circulation of blood throughout the body.

Glomerulus

• Capillary network where filtration begins.

• Site of urine storage in the kidney.

• Location of nephron reabsorption.

• Main area for blood oxygenation.

Detrusor Muscle

• Muscle that contracts to push urine out of the bladder.

• Muscle that relaxes to allow urine to fill the bladder.

• Muscle that controls the flow of blood in the kidneys.

• Muscle that supports the pelvic organs.

Excretion

• The process of removing waste from the body.

• The process of absorbing nutrients into the bloodstream.

• The process of breaking down food in the stomach.

• The process of circulating blood throughout the body.

Renal Tubule

• Where filtration occurs.

• Where urine is stored.

• Where reabsorption and secretion occur.

• Where blood is oxygenated.

Reabsorption

• Absorbing useful substances back into the bloodstream.

• The process of filtering waste from the blood.

• The movement of water from the blood into the tissues.

• The secretion of hormones into the bloodstream.

Nephron

• The basic filtering unit of the kidney.

• A type of blood cell involved in immunity.

• A hormone produced by the pancreas.

• A muscle type found in the heart.