Unit 5 - Concept 3 - Urinary System

What is the primary function of the urinary system?

• Oxygen transport

• Filtration of blood and regulation of body fluids

• Circulation of blood

• Digestion of food

Which organ is considered the MVP of the urinary system?

• Lungs

• Kidney

• Liver

• Heart

What percentage of blood volume is present in the kidneys at any given time?

• 50%

• 20%

• 5%

• 10%

What is the main structural and functional unit of the kidney?

• Renal tubule

• Renal corpuscle

• Nephron

• Bladder

What process in nephrons is responsible for creating a cell and protein-free filtrate?

• Tubular reabsorption

• Glomerular filtration

• Capillary diffusion

• Tubular secretion

Which hormone plays a role in regulating water retention in the kidneys?

• Insulin

• Estrogen

• Thyroxine

• ADH

What is the primary function of the ureters?

• To produce urine

• To filter blood

• To transport urine from the kidneys to the bladder

• To store urine

How much liquid can a full bladder comfortably hold?

• 2 liters

• 1 liter

• 500 milliliters

• 200 milliliters

Why are females more likely to get urinary tract infections compared to males?

• Shorter urethra

• Lower bladder capacity

• Higher kidney function

• Longer urethra

What is the role of the external urethral sphincter?

• It controls the release of urine

• It secretes hormones

• It filters urine

• It absorbs nutrients