B11 - Gas Exchange (CIE - 0654)

What is the function of the lungs?

• Breathing and gas exchange
• Oxygen production
• Protect the organs in the thorax and are moved by the intercostal muscles to aid breathing
• Move ribcage up and out to cause inhalation and move ribcage in and down to cause exhalation

What is the function of the ribs?

• Protect the organs in the thorax and are moved by the intercostal muscles to aid breathing.
• Support the spine
• Breathing and gas exchange
• Contracts to expand thorax and cause inhalation, relaxes to compress thorax and cause exhalation.

What is the function of the diaphragm?

• Contracts to expand thorax and cause inhalation, relaxes to compress thorax and cause exhalation.
• Moves ribcage up and out to cause inhalation and move ribcage in and down to cause exhalation.
• Breathing and gas exchange
• Protect the organs in the thorax and are moved by the intercostal muscles to aid breathing.

What is the function of the intercostal muscles?

• Move ribcage up and out to cause inhalation and move rib cage in and down to cause exhalation.
• Assist in digestion
• Breathing and gas exchange
• Protect the organs in the thorax and are moved by the intercostal muscles to aid breathing.

What is the function of the larynx?

• It contains the vocal cords which allows us to vocalise/make noise and the epiglottis which prevents food entering the trachea when we swallow.
• Houses the thyroid gland
• Produces hormones for growth
• Controls the passage of air into the trachea during breathing

What is the function of the Bronchi?

• They carry air from the trachea to each lung, have mucus to trap bacteria and dust and cilia to sweep these out of the lungs!
• Carry blood between the heart and the lungs
• Transport oxygen to the body tissues
• Regulate blood pressure

What is the function of the Bronchioles?

• Carry air between the alveoli and the bronchi.
• Produce mucus
• Transport oxygen to the body tissues
• Regulate blood pressure

What is the function of the alveoli?

• Where gas exchange takes place.
• Produce mucus
• Carry air between the alveoli and the bronchi.
• Regulate blood pressure

What type of blood vessels are found surrounding the alveoli?

• Capillaries
• Veins
• Arteries
• Bronchioles

What are the 2 muscles that work together to cause breathing?

• Diaphragm and intercostal muscles
• Quadriceps and biceps
• Hamstrings and triceps
• Abdominal and pectoral muscles