Excretion

Purpose of Excretion

To maintain homeostasis by removing harmful metabolic wastes from cellular processes.

What is Excretion?

The removal of metabolic waste products produced by cellular activities.

What is Egestion?

The removal of undigested food materials from the digestive system.

Examples of Metabolic Wastes

Urea, carbon dioxide, and toxic substances produced during metabolism.

Role of Kidneys in Excretion

Filter blood, remove waste, and produce urine.

Function of Ureters

Transport urine from the kidneys to the urinary bladder.

What does the Urinary Bladder do?

Serves as a storage area for urine until excretion.

Role of the Liver in Excretion

Detoxifies chemicals and produces urea from ammonia.

How do Lungs contribute to Excretion?

Eliminate carbon dioxide and water vapor through breathing.

What is the structure of the Kidney?

Composed of the renal cortex, renal medulla, and renal pelvis.

Components of a Nephron

Renal corpuscle (glomerulus and Bowman's capsule) and renal tubule (proximal tubule, loop of Henle, distal tubule).

Necessity of Hormones in Excretion

Hormones like aldosterone and ADH regulate kidney function and urine production.

Factors promoting Kidney Health

Hydration, healthy diet, and regular exercise.

Risks to Excretory System Health

Kidney stones, urinary tract infections, and chronic kidney disease.

Importance of Understanding the Excretory System

Informs better lifestyle choices that support kidney health.

What impacts Excretory System Function?

Excessive use of medications and exposure to toxins.