The Excretory System: Learn About How Animals Remove Waste

Question 1

What is the main job of the nephron in making urine?

Accepted Answer

Filtering waste from the blood

Answer

Holding urine

Answer

Moving urine

Question 2

Which body part is responsible for filtering waste from the blood?

Accepted Answer

Kidneys

Answer

Lungs

Answer

Liver

Answer

Skin

Question 3

What is the name of the tube that carries urine from the kidneys to the bladder?

Accepted Answer

Ureter

Answer

Urethra

Answer

Nephron

Answer

Bladder

Question 4

Which hormone helps control water absorption in the kidneys?

Accepted Answer

Antidiuretic hormone

Answer

Insulin

Answer

Glucagon

Answer

Adrenaline

Question 5

Which of these animals uses a cloaca?

Accepted Answer

Snake

Answer

Cat

Answer

Dog

Answer

Human

Question 6

Kidney failure can lead to serious health issues. Which of the following is NOT a treatment option for kidney failure?

Accepted Answer

Limb amputation

Answer

Dialysis

Answer

Kidney transplant

Answer

Medications

Question 7

Which hormone, produced by the pituitary gland, controls water reabsorption in the kidneys?

Accepted Answer

Antidiuretic hormone (ADH)

Answer

Adrenaline

Answer

Growth hormone

Answer

Insulin

Question 8

What is the main function of the kidneys?

Accepted Answer

Filtering waste products from the blood

Answer

Producing urine

Answer

Storing urine

Answer

Regulating body temperature

Question 9

Which organ holds urine before it leaves the body?

Accepted Answer

Bladder

Answer

Kidneys

Answer

Ureters

Answer

Urethra

Question 10

Which hormone controls water reabsorption in the kidneys?

Accepted Answer

ADH

Answer

PTH

Answer

Insulin

Answer

Glucagon

Question 11

What process describes the kidneys filtering waste products?

Accepted Answer

Glomerular filtration

Answer

Tubular secretion

Answer

Tubular reabsorption

Answer

Diuresis

Question 12

Which of these animals lacks a urinary system?

Accepted Answer

Insects

Answer

Humans

Answer

Dogs

Answer

Fish

Question 13

Which blood vessel brings blood to the kidneys?

Accepted Answer

Renal artery

Answer

Renal vein

Answer

Aorta

Answer

Capillary

Question 14

What is the primary function of the glomerulus in the nephron?

Accepted Answer

Filters waste products and excess water from the blood

Answer

Reabsorbs essential substances from the filtered fluid

Answer

Secretes substances like hormones into the filtered fluid

Answer

Concentrates urine before it enters the bladder

Question 15

How does the hormone aldosterone contribute to urine formation?

Accepted Answer

It promotes water reabsorption in the collecting ducts, resulting in more concentrated urine.

Answer

It enhances potassium ion secretion into the urine.

Answer

It reduces the glomerular filtration rate.

Answer

It stimulates the production of antidiuretic hormone.

Question 16

Which of the following describes the liver's role in the excretory system?

Accepted Answer

Filters and processes waste products in the blood

Answer

Stores urine before it is released from the body

Answer

Balances blood sugar levels in the body

Answer

Regulates blood pressure and heart rate

Question 17

How does the countercurrent multiplier system aid mammals in concentrating their urine?

Accepted Answer

By establishing a concentration gradient in the kidney's medulla

Answer

By transporting water out of the collecting duct

Answer

By filtering waste products from the blood

Answer

By storing urine in the bladder

Question 18

Which function is NOT carried out by the excretory system?

Accepted Answer

Delivering oxygen to cells

Answer

Removing waste products

Answer

Regulating blood pH

Answer

Maintaining fluid balance

Question 19

What is the main filtering unit of the kidneys called?

Accepted Answer

Nephrons

Answer

Ureters

Answer

Bladder

Answer

Urethra

Question 20

Which hormone influences water reabsorption in the kidneys?

Accepted Answer

Antidiuretic hormone

Answer

Insulin

Answer

Adrenaline

Answer

Estrogen

Question 21

Which waste product is released by the lungs during respiration?

Accepted Answer

Carbon dioxide

Answer

Nitrogenous waste

Answer

Water

Answer

Electrolytes

Question 22

How does filtrate differ from urine?

Accepted Answer

Filtrate is less concentrated than urine.

Answer

Filtrate does not contain waste products, while urine does.

Answer

Urine is produced in the kidneys, and filtrate is produced in the bladder.

Answer

There is no difference between filtrate and urine.

Question 23

What is the primary function of the urethra?

Accepted Answer

To expel urine from the body.

Answer

To convey urine from the kidneys to the bladder.

Answer

To filter waste products from the blood.

Answer

To secrete hormones that regulate water balance.

Question 24

Which of these body parts is NOT part of the excretory system?

Accepted Answer

Lungs

Answer

Kidneys

Answer

Bladder

Answer

Urethra

Question 25

What substance is the main waste product produced by the excretory system?

Accepted Answer

Urea

Answer

Carbon dioxide

Answer

Ammonia

Answer

Bile

Question 26

Which part of the kidneys is responsible for filtering blood and making urine?

Accepted Answer

Nephrons

Answer

Ureter

Answer

Bladder

Answer

Skin

Question 27

What is the function of the urethra?

Accepted Answer

To carry urine out of the body

Answer

To store urine

Answer

To filter blood

Answer

To produce hormones

Question 28

What is the name for the process of making urine?

Accepted Answer

Excretion

Answer

Filtration

Answer

Respiration

Answer

Digestion

Question 29

Which of these is NOT a job that the kidneys do?

Accepted Answer

Digesting food

Answer

Getting rid of waste

Answer

Controlling blood pressure

Answer

Making hormones

Question 30

What is the name of the tiny structures in the kidneys that do the work of filtering blood and making urine?

Accepted Answer

Nephrons

Answer

Glomeruli

Answer

Ureters

Answer

Bowman's capsules

Question 31

Which organ filters waste products from the blood?

Accepted Answer

Kidneys

Answer

Liver

Answer

Pancreas

Answer

Intestines

Question 32

What is the tube that carries urine from the kidneys to the bladder called?

Accepted Answer

Ureter

Answer

Urethra

Answer

Nephron

Answer

Glomerulus

Question 33

Which hormone regulates water reabsorption in the kidneys?

Accepted Answer

ADH (Antidiuretic Hormone)

Answer

Insulin

Answer

Glucagon

Answer

Cortisol

Question 34

What is the primary waste product of protein metabolism?

Accepted Answer

Urea

Answer

Glucose

Answer

Creatinine

Answer

Ammonia

Question 35

Which of these is NOT a function of the excretory system?

Accepted Answer

Producing digestive enzymes

Answer

Removing waste products

Answer

Regulating blood volume

Answer

Maintaining electrolyte balance

Question 36

Where does blood get filtered in the kidney?

Accepted Answer

Glomerulus

Answer

Bowman's capsule

Answer

Loop of Henle

Answer

Collecting duct

Question 37

Which part of the excretory system stores urine until it's released?

Accepted Answer

Bladder

Answer

Kidneys

Answer

Ureters

Answer

Nephrons

Question 38

Which muscle controls the release of urine?

Accepted Answer

Sphincter

Answer

Detrusor

Answer

Cremaster

Answer

Levator ani

Question 39

The main function of the kidneys is to:

Accepted Answer

Filter waste products from the blood

Answer

Regulate blood pressure

Answer

Store urine

Answer

Produce red blood cells

Question 40

Which tube carries urine from the kidney to the bladder?

Accepted Answer

Ureter

Answer

Urethra

Answer

Vas deferens

Answer

Fallopian tube

Question 41

Which hormone regulates urine production?

Accepted Answer

Antidiuretic hormone (ADH)

Answer

Insulin

Answer

Thyroxine

Answer

Testosterone

Question 42

The process of removing waste products from the blood is called:

Accepted Answer

Filtration

Answer

Reabsorption

Answer

Secretion

Answer

Diffusion

Question 43

A major component of urine is:

Accepted Answer

Urea

Answer

Sodium

Answer

Glucose

Answer

Proteins

Question 44

Which condition is caused by an overproduction of urine?

Accepted Answer

Polyuria

Answer

Oliguria

Answer

Anuria

Answer

Uremia

Question 45

Which organ filters waste products from the blood and produces urine?

Accepted Answer

Kidneys

Answer

Bladder

Answer

Ureters

Answer

Liver

Question 46

Where is urine stored until it is released outside the body?

Accepted Answer

Bladder

Answer

Kidneys

Answer

Ureters

Answer

Urethra

Question 47

Which substance is a waste product removed from the body through the excretory system?

Accepted Answer

Urea

Answer

Proteins

Answer

Oxygen

Answer

Glucose

Question 48

The term describing the process of removing waste products from the body is:

Accepted Answer

Excretion

Answer

Digestion

Answer

Circulation

Answer

Respiration

Question 49

Which of the following is NOT a function of the excretory system?

Accepted Answer

Producing insulin

Answer

Removing waste products

Answer

Regulating blood pH

Answer

Maintaining fluid balance

Question 50

What are the tubes called that carry urine from the kidneys to the bladder?

Accepted Answer

Ureters

Answer

Capillaries

Answer

Glomerulus

Answer

Nephrons

Question 51

Within the kidney, where does blood filtration take place?

Accepted Answer

Nephron

Answer

Renal pelvis

Answer

Bladder

Answer

Ureter

Question 52

Which blood vessel brings blood to the glomerulus for filtration?

Accepted Answer

Afferent arteriole

Answer

Efferent arteriole

Answer

Vena cava

Answer

Renal vein

Question 53

What pigment provides urine with its characteristic yellow color?

Accepted Answer

Urochrome

Answer

Bilirubin

Answer

Melanin

Answer

Hemoglobin