Excretory system

Multiple Choice

Which human excretory organ breaks down Red blood cells and synthesizes urea?

• Lung

• skin

• liver

• kidney

Multiple Choice

Which human excretory structure aids in the maintenance of normal body temperature?

• sweat glands

• liver

• nephron

• urinary bladder

Multiple Choice

Which sequence represents the correct pathway for the removal of urine from the human body?

• kidney->ureter->bladder->urethra

• kidney->urethra->bladder->ureter

• ureter->kidney->bladder->urethra

• urethra->kidney->bladder->ureter

Multiple Choice

In humans, the organ that most directly regulates the concentration of water in the blood is the

• heart

• pancreas

• liver

• kidney

Multiple Choice

In humans, the ureter transports urine from the

• blood to the kidney

• liver to the kidney

• kidney to the urinary bladder

• urinary bladder to the outside of the body

Multiple Choice

The structure indicated by A is known as the

• cyton

• Bowman's Capsule

• glomerulus

• urinary bladder

Multiple Choice

The nephron is the structural unit of the

• lung

• kidney

• liver

• intestine

Multiple Choice

In humans, gout is caused by excess production and deposition of

• lactic acid

• uric acid

• amino acids

• fatty acids

Multiple Choice

An investigation was carried out to determine the effect of drinking an excessive amount of water on urine flow. a subject drank 1 liter of water in 5 minutes, and then urine output was measured. The graph shows how the human adult kidneys respond to regulate water balance in the body. Urine output was measured every 10 minutes for a little over 3 hours. Normal output for an average adult is approximately .5-1 mL/minute. Approximately how long did it take, in minutes, for the body to return to NORMAL after the intake of water?

• 10 min.

• 30 min.

• 120 min.

• 180 min.

Multiple Choice

The change in urine production during this 3 hour period was most likely the result of

• antibody production

• homeostasis and negative feedback

• enzymatic breakdown of water

• nerve cell malfunction

Multiple Choice

One half-hour after the liter of water was consumed, the urine produced by the kidneys was

• 2-3 mL/min

• 4-5 mL/min

• 8 times greater than normal

• below normal

Fill in the Blanks

Multiple Choice

Which process reduces the concentration of urea in the blood of humans?

• digestion

• egestion

• synthesis

• excretion

Multiple Choice

The removal of carbon dioxide and nitrogenous wastes from an organism illustrates the life function know as ______________, this occurs in the lungs in structures called ________.

• digestion, nephron

• excretion, alveoli

• digestion, alveoli

• excretion, nephron