The Excretory System

Question 1

What is the primary function of the excretory system in animals?

Answer 1

To remove waste products from the body.

Question 2

True or False: The excretory system helps regulate water and electrolyte balance.

Answer 2

True

Question 3

What are the main organs involved in the excretory system of mammals?

Answer 3

Kidneys, ureters, bladder, and urethra.

Question 4

Fill in the blank: The functional unit of the kidney is called a ___.

Answer 4

nephron

Question 5

Which process in the nephron involves the filtering of blood?

Answer 5

Glomerular filtration

Question 6

What is the role of the ureters?

Answer 6

To transport urine from the kidneys to the bladder.

Question 7

True or False: All animals excrete waste in the same manner.

Answer 7

False

Question 8

What is urea?

Answer 8

A nitrogenous waste product formed in the liver.

Question 9

Multiple Choice: Which of the following is NOT a method of excretion? A) Urination B) Defecation C) Respiration D) Reproduction

Answer 9

D) Reproduction

Question 10

What is the primary waste product excreted by aquatic animals?

Answer 10

Ammonia

Question 11

Fill in the blank: The bladder stores ___ until it is excreted.

Answer 11

urine

Question 12

Which type of animal typically uses urea for excretion?

Answer 12

Mammals

Question 13

What is the function of the renal pelvis?

Answer 13

To collect urine from the kidney before it moves to the ureter.

Question 14

True or False: The excretory system plays a role in maintaining acid-base balance.

Answer 14

True

Question 15

What is the role of the loop of Henle in the nephron?

Answer 15

To concentrate urine and conserve water.

Question 16

Multiple Choice: Which of the following excretes waste primarily through skin? A) Fish B) Amphibians C) Birds D) Mammals

Answer 16

B) Amphibians

Question 17

Fill in the blank: The process of reabsorbing water and nutrients occurs primarily in the ___ tubule.

Answer 17

proximal

Question 18

What is the main difference between the excretory systems of reptiles and mammals?

Answer 18

Reptiles excrete uric acid, while mammals excrete urea.

Question 19

True or False: Kidneys are involved in the regulation of blood pressure.

Answer 19

True

Question 20

What is the term for the process of removing waste products from the blood?

Answer 20

Excretion

Question 21

What structure connects the kidneys to the bladder?

Answer 21

Ureters

Question 22

Multiple Choice: Which animal group is most likely to excrete ammonia directly into the water? A) Mammals B) Birds C) Fish D) Reptiles

Answer 22

C) Fish

Question 23

Fill in the blank: The excretory system helps to regulate ___ levels in the body.

Answer 23

salt

Question 24

What is the main organ of excretion in insects?

Answer 24

Malpighian tubules

Question 25

True or False: The excretory system is only responsible for liquid waste.

Answer 25

False

Question 26

What is the role of antidiuretic hormone (ADH) in the excretory system?

Answer 26

To regulate water reabsorption in the kidneys.

Question 27

Multiple Choice: Which organ is responsible for filtering blood in mammals? A) Heart B) Liver C) Kidney D) Lungs

Answer 27

C) Kidney

Question 28

Fill in the blank: The excretion of solid waste is primarily handled by the ___ system.

Answer 28

digestive

Question 29

What is the term for the elimination of urine from the body?

Answer 29

Urination

Question 30

True or False: The excretory system can adapt to varying water availability.

Answer 30

True

Question 31

What is the primary nitrogenous waste in birds?

Answer 31

Uric acid

Question 32

Which part of the nephron is responsible for the reabsorption of glucose?

Answer 32

Proximal convoluted tubule

Question 33

Multiple Choice: What is the main purpose of the excretory system? A) Digestion B) Waste removal C) Respiration D) Circulation

Answer 33

B) Waste removal

Question 34

Fill in the blank: The kidneys receive blood from the renal ___ for filtration.

Answer 34

artery

Question 35

What is a common disease that affects the excretory system?

Answer 35

Kidney stones

Question 36

True or False: The excretory system has no impact on homeostasis.

Answer 36

False

Question 37

What is the role of the collecting duct in the nephron?

Answer 37

To collect urine from multiple nephrons and transport it to the renal pelvis.

Question 38

Order of System Structure in a female mammal

Answer 38

Bladder, Kidney, Urethra, Ureter

Question 39

Order of System Structure in a male mammal

Answer 39

Ureter, Urethra, Bladder, Kidney

Question 40

3 main areas of the kidney

Answer 40

Cortex - dark outer layer Medulla - paler inner layer Pelvis - innermost layer, white in colour