The part of the nephron where fluid is absorbed from the circulatory system is the:

• Ascending Loop of Henle
• Descending Loop of Henle
• Bowman's Capsule
• Malphigian Tubule

The tube that carries urine from the kidney into the bladder is called the:

• Ureter
• Urethra
• Proximal Tubule
• Collecting Duct

Blood flows into the kidney along the:

• Renal Venule
• Renal Artery
• Glomerulus
• Hepatic Artery

Mammals get rid of Nitrogenous waste by producing:

• Urea
• Ammonia
• Uric Acid
• NO₂ gas

The high pressure capillary network that pushes fluid out of the bloodstream is the:

• Proximal Tubule
• Distal Tubule
• Loop of Henle
• Glomerulus

What is the main function of the excretory system?

• to collect and remove wastes from the body
• to strengthen skeletal muscles
• to protect the nervous system
• to bring oxygen to body cells

Which organ of the excretory system stores urine until the body is ready to eliminate it?

• ureters
• urethra
• urinary bladder
• urea

Under normal conditions, which of the following substances is found in urine?

• blood cells
• protein
• glucose
• urea

Which excretory organ eliminates water and some chemical wastes in perspiration?

• lungs
• skin
• liver
• kidneys

The process of removal of the body’s wastes is called

• gas exchange.
• respiration.
• excretion.
• filtration.