5. Human Physiology. Respiratory System

When split structurally what are the two respiratory areas?

• Upper respiratory tract

• lower respiratory tract

• conducting zone

• respiratory zone

Which is not a upper respiratory tract structure?

• The nasal cavity

• pharynx

• larynx

• alveoli

Where does gaseous exchange take place?

• Bronchioles

• alveolar ducts

• alveoli

• Bronchus

How are alveoli designed to facilitate gas exchange?

• Dense network of capillaries

• Large volume e.g. 300 million per lung

• moist lining

• Thin epithelium membrane

• Thick membrane

Which muscles are the primary inspiratory muscles?

• Diaphragm

• external intercostal muscles

• sternocleidomastoid

• rectus abdominals

The pressure of a given gas is inversely proportional to its volume is known as?

• Burton's Law

• Bump's Law

• Bob's Law

• Boyle's Law

What happens to the pressure in the lungs during inhalation?

• decreases

• increases

• stays the same

Where is the respiratory control centre located?

• Cerebellum

• Medulla

• Cerebrum

• spinal chord

What detects change in O2 and CO2 levels in the body?

• Mechanoreceptros

• baroreceptors

• chemoreceptors

• thermoreceptors

what factors impact oxygen dissociation?

• PO2

• Blood pH

• Temperature

• Blood plasma levels