Excretory system

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

What function do the kidneys perform?

• eliminate carbon dioxide
• supply oxygen to body cells
• remove urea and excess water
• play a role in gas exchange

Using the picture, what is the structure of A?

• ureter
• kidney
• urinary bladder
• urethra

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

The part of the nephron that primarily reabsorbs water is:

• Ascending Loop of Henle 
• Descending Loop of Henle
• Bowman's Capsule
• Vasa Recta

The part of the nephron that primarily reabsorbs Na+ ions is:

• Ascending Loop of Henle 
• Descending Loop of Henle
• Bowman's Capsule
• Vasa Recta