Respiratory & Circulatory Systems Vocab

Question 1

Respiratory System

Answer 1

A system that interacts with the environment and with other body systems to bring oxygen to the body and remove carbon dioxide

Question 2

Trachea

Answer 2

The tube connecting the mouth to the bronchial tubes that carries air to the lungs; also called the windpipe.

Question 3

Larynx

Answer 3

A muscular structure at the top of the trachea, containing the vocal cords (voice box).

Question 4

Bronchi

Answer 4

Either of the two main branches of the trachea that lead to the lungs, where they divide into smaller branches.

Question 5

Bronchioles

Answer 5

The bronchi is further divided into smaller branches

Question 6

Alveoli

Answer 6

Any of the tiny air-filled sacs arranged in clusters in the lungs, in which the exchange of oxygen and carbon dioxide takes place.

Question 7

Gas exchange

Answer 7

The diffusion of gases from an area of higher concentration to an area of lower concentration, especially the exchange of oxygen and carbon dioxide between an organism and its environment.

Question 8

Lungs

Answer 8

A pair of organs, the principal parts of the respiratory system, at the front of the cavity of the chest in which the lungs transfer oxygen from the air into the blood, while carbon dioxide is removed from the blood and exhaled.

Question 9

Diaphragm

Answer 9

A dome-shaped structure made up of muscle and connective tissue that separates the abdominal cavity from the chest and either draws air into the lungs or forces air out of them.

Question 10

Respiration

Answer 10

the physiological process that enables animals to exchange carbon dioxide, the primary product of cellular respiration for fresh air (Oxygen)

Question 11

Circulatory System

Answer 11

The system of organs and structures by which blood and lymph are circulated throughout the body.

Question 12

Heart

Answer 12

The 4 chambered muscular organ that pumps blood through the body by contracting and relaxing.

Question 13

Atrium

Answer 13

A chamber of the heart that receives blood from the veins and forces it by muscular contraction into a ventricle.

Question 14

Ventricle

Answer 14

The chamber of the heart that receives blood from the atria and pumps it by muscular contraction into the arteries.

Question 15

Vein

Answer 15

Any of the blood vessels that carry deoxygenated blood toward the heart from the cells of the body.

Question 16

Blood Pressure

Answer 16

The pressure of the blood in the vessels, especially the arteries, as it circulates through the body.

Question 17

Plasma

Answer 17

The clear, yellowish fluid portion of blood or, lymph in which cells are suspended.

Question 18

Platelets

Answer 18

Small, round cell fragments containing no nuclei that are found in the blood and help in the clotting of blood.

Question 19

Red Blood Cell

Answer 19

A disk-shaped cell in the blood that contains hemoglobin, lacks a nucleus, and transports oxygen and carbon dioxide to and from the tissues.

Question 20

White Blood Cell

Answer 20

Colorless cells in the blood that help combat infection.

Question 21

Artery

Answer 21

Any of the blood vessels that carry oxygenated blood away from the heart to the body’s cells, tissues, and organs.

Question 22

Capillary

Answer 22

Tiny blood vessels that connect the smallest arteries to the smallest veins exchanging oxygen, metabolic waste products, and carbon dioxide between blood and tissue cells.

Question 23

Pharynx

Answer 23

throat - it extends from the mouth and nasal cavity to to the larynx

Question 24

Inhalation

Answer 24

the movement of air from the environment into the respiratory system of an animal

Question 25

Exhalation

Answer 25

the movement of air from the respiratory system of an animal back into the environment.