Respiratory And Circulatory Systems

Question 1

Define Alveoli

Answer 1

Air sacs in the lungs; also, the milk-secreting part of the mammary glands; singular: alveolus.

Question 2

Define Asthma

Answer 2

An allergic condition condition that causes narrowing of the airways and difficulty breathing.

Question 3

Define Bronchiole

Answer 3

A very small air tube in the lung.

Question 4

Define Concentration Gradient

Answer 4

A difference in concentration of a solution, often between the inside and outside of a cell; also called diffusion gradient.

Question 5

Define Emphysema

Answer 5

A disease of the lungs that damages the alveoli; caused by long-term exposure to irritants.

Question 6

Define Epiglottis

Answer 6

A cartilage flap at the base of the pharynx that covers the trachea during swallowing.

Question 7

Define Expiration

Answer 7

Breathing out; exhalation.

Question 8

Define Inspiration

Answer 8

Breathing in; inhalation

Question 9

Define Larynx

Answer 9

The structure at the top of the trachea that contains the vocal cords.

Question 10

Define Oesophagus

Answer 10

The tube that carries food from the throat that contains the vocal cords.

Question 11

Define Pharynx

Answer 11

The throat; the pharynx joins the mouth cavity to the oesophagus and larynx.

Question 12

Define Pleura

Answer 12

A membrane covering the surface of the lungs.

Question 13

Define Pleural Fluid

Answer 13

A thin layer of fluid within the pleura that allows the lungs to move during breathing.

Question 14

Define Primary Bronchi

Answer 14

The first branching from the trachea, entering the left and right lungs.

Question 15

Define pulmonary arteries

Answer 15

The artery that takes blood from the heart to the lungs.

Question 16

Define Respiratory System

Answer 16

The System specialised to facilitate the intake of oxygen and the removal of carbon dioxide.

Question 17

Define Secondary Bronchi

Answer 17

The division of the primary bronchi, taking air into each lobe of the lungs.

Question 18

Define Terminal Bronchioles

Answer 18

The end of the bronchioles before they form alveoli.

Question 19

Define Tertiary Bronchi

Answer 19

the division of the secondary bronchi.

Question 20

Define Trachea

Answer 20

The tube that takes air from the throat to the lungs; the windpipe.

Question 21

Define Ventilation

Answer 21

the process of inhalation and exhalation; breathing.

Question 22

Define vocal cord

Answer 22

Membrane in the larynx that vibrates, producing sounds.