Human Body - Energy Systems

Question 1

Which blood vessel allows the exchange of gases within tissues?

A) vein
B) capillary
C) vena cava
D) aorta

Answer 1

B) capillary

Question 2

Which body system protects some of the internal organs, such as the heart and lungs, from physical injury?

A) muscular
B) skeletal
C) digestive
D) nervous

Answer 2

B) skeletal

Question 3

During breathing, which gas is taken in by the lungs and then carried to cells via the bloodstream?

A) methane
B) carbon dioxide
C) nitrogen
D) oxygen

Answer 3

D) oxygen

Question 4

The esophagus, stomach, small and large intestines, gall bladder, pancreas, and liver are all a part of which body system?

A) excretory
B) endocrine
C) integumentary
D) digestive

Answer 4

D) digestive

Question 5

Which are systems of the human body?

A) lungs, heart, and brain
B) arteries, blood, and heart
C) vision, hearing, and taste
D) respiratory, circulatory, and reproductive

Answer 5

D) respiratory, circulatory, and reproductive

Question 6

Which two systems work together to remove carbon dioxide waste and bring oxygen to blood?

A) digestive and excretory
B) circulatory and digestive
C) respiratory and excretory
D) circulatory and respiratory

Answer 6

D) circulatory and respiratory

Question 7

What is the name of the structures at the end of the bronchioles where gases are exchanged?

A) epiglottis
B) alveoli
C) larynx
D) trachea

Answer 7

B) alveoli

Question 8

Which system breaks down food into nutrients that can be absorbed into the body?

A) excretory
B) circulatory
C) digestive
D) lymphatic

Answer 8

C) digestive

Question 9

Which blood vessel allows the exchange of gases within tissues?

A) vein
B) capillary
C) vena cava
D) aorta

Answer 9

B) capillary

Question 10

When air moves into the lungs, oxygen ______.

A) diffuses across the membranes of the alveoli and exits the blood
B) moves across the membranes of the alveoli by active transport
C) diffuses across the membranes of the alveoli and enters the blood
D) is converted into carbon monoxide

Answer 10

C) diffuses across the membranes of the alveoli and enters the blood

Question 11

Which blood vessels carry deoxygenated blood back to the heart?

A) xylem
B) veins
C) phloem
D) arteries

Answer 11

B) veins

Question 12

Which body system is responsible for transporting carbon dioxide from cells to the lungs?

A) digestive
B) respiratory
C) excretory
D) circulatory

Answer 12

D) circulatory

Question 13

The esophagus, stomach, small and large intestines, gall bladder, pancreas, and liver are all part of which body system?

A) excretory
B) endocrine
C) integumentary
D) digestive

Answer 13

D) digestive

Question 14

Which two systems work together to provide cells with oxygen and remove carbon dioxide from them?

A) nervous and excretory
B) nervous and circulatory
C) respiratory and excretory
D) respiratory and circulatory

Answer 14

D) respiratory and circulatory

Question 15

When you eat food, the process of digestion begins in the:

A) stomach
B) mouth
C) small intestine
D) esophagus

Answer 15

B) mouth

Question 16

Choose the word that best describes the function of the urinary system.

A) excretion
B) digestion
C) nutrition
D) support

Answer 16

A) excretion

Question 17

A urologist is a doctor who specializes in disorders of the urinary system. Which of the following patients is most likely to be treated by a urologist?

A) a patient with low levels of iron in her blood
B) a patient with a painful kidney stone
C) a patient with swollen veins in the anus, called hemorrhoids
D) a patient with chronic indigestion

Answer 17

B) a patient with a painful kidney stone

Question 18

Which human body system interacts with each cell of the body?

A) the circulatory system
B) the digestive system
C) the muscular system
D) the skeletal system

Answer 18

A. The circulatory system transports blood to all the cells of the body

Question 19

How are the alveoli in the lungs and the villi in the small intestine similar?

A) Both are structures located in the respiratory system.
B) Both are structures located in the digestive system.
C) Both are structures in which substances pass through capillary walls into the blood.
D) Both are structures involved in coordination and movement.

Answer 19

C. Both alveoli and villi are tiny structures containing capillaries in which substances pass to and/or from the blood. In the alveoli of the respiratory system, oxygen and carbon dioxide pas into and out of blood; in the villi of the digestive system, nutrients pass into the blood.

Question 20

In the 17th century, English physician William Harvey concluded that blood in the veins flows toward the heart. Which of the following facts helps support Harvey’s conclusion?

A) The heart pumps about 1,800 gallons of blood per day.
B) The heart has four chambers: two atria and two ventricles.
C) Large veins branch into smaller blood vessels called capillaries.
D) Veins have values that allow blood to flow in one direction only.

Answer 20

D. Of the four facts given, this is the only one that involves the direction of flow of the blood. Therefore, it helps to support Harvey’s conclusion that blood in the veins flows toward the heart.

Question 21

Most of the digestion of food occurs in the:

A) esophagus
B) stomach
C) small intestine
D) large intestine

Answer 21

C) small intestine

The small intestine hosts the most digestion of the digestive tract.