B4 Gas Exchange Flashcards

A set of 20 practice vocabulary flashcards covering the B4 Gas Exchange topic, including the respiratory system, asthma, and the effects of smoking.

Respiratory System

A system that allows air to pass in and out of the body.

Ventilation

Movement of gases in and out of the lungs.

Gas exchange

The movement of oxygen into your blood and carbon dioxide out at the alveoli.

Inhale

Breathing in

Exhale

Breathing out

Diaphragm

A sheet of muscle underneath your lungs

Alveoli

When gas exchange takes place.

Asthma

When the lining of the airways from the mouth to the lungs becomes irritated and swells up.

Effect of exercise on breathing rate

A person’s breathing rate increases.

Effect of smoking on cilia

Damages the cilia of the cells

Effect of smoking on bronchi

Irritates the bronchi

Effect of smoking on alveoli

Reduces surface area of alveoli

Effect of tar in cigarette smoke

Can cause mouth, throat or lung cancer.

Alveoli Surface Area Adaptation

Alveoli have a large surface area.

Alveoli Capillary Network Adaptation

Surrounded by a network of capillaries to give a good blood supply.

Alveoli Lining Adaptation

Lining is $1$ cell thick to make diffusion quicker.

Alveoli Moist Surface Adaptation

Moist surface helps diffusion of gases.

Diffusion of gases

Movement of oxygen into the blood and carbon dioxide out at the alveoli.

Capillaries

A network of vessels surrounding the alveoli to give a good blood supply.

Bronchi (Impact of Smoking)

Airway tubes that become irritated due to cigarette smoke.