30.4: The Excretory System

Question 1

excretion

Answer 1

process by which metabolic wastes are eliminated from the body

Question 2

ureter

Answer 2

tube that carries urine from a kidney to the urinary bladder

Question 3

urinary bladder

Answer 3

saclike organ in which urine is stored before being excreted

Question 4

urethra

Answer 4

tube through which urine leaves the body

Question 5

nephron

Answer 5

blood-filtering structure in the kidneys in which impurities are filtered out, wastes are collected, and purified blood is returned to the circulation

Question 6

filtration

Answer 6

process of passing a liquid or gas through a filter to remove wastes

Question 7

glomerulus

Answer 7

small network of capillaries encased in the upper end of the nephron; where filtration of the blood takes place

Question 8

Bowman’s capsule

Answer 8

cuplike structure that encases the glomerulus; collects filtrate from the blood

Question 9

reabsorption

Answer 9

process by which water and dissolved substances are taken back into the blood

Question 10

loop of Henle

Answer 10

section of the nephron tubule that is responsible for conserving water and minimizing the volume of the filtrate