Ribs & Sternum
How many pairs of ribs does the human body have?
12 pairs
Primary muscle of inhalation?
Diaphragm
Membrane covering each lung?
Visceral pleura
Chamber that pumps oxygenated blood to the body?
Left ventricle
Collapsed lung is called?
Atelectasis
Ribs 1-7 are called what?
True ribs
Muscle used for forced exhalation?
External and internal intercostals, sternocleidomastoid, scalenes, abdominal muscles
Structure between lungs?
Mediastinum
Name of the heart's natural pacemaker?
SA node (Sinoatrial node)
Condition where air enters pleural cavity?
Pneumothorax
Which part of sternum connects with clavicles?
Manubrium
Dome-shaped muscle in breathing?
Diaphragm
Smallest airway branches?
Bronchioles
Valve between left atrium & ventricle?
Mitral (bicuspid) valve
Inflammation of pleura?
Pleurisy
True ribs attach to what structure?
Sternum
Muscles between ribs aiding breathing?
Intercostals
Space between parietal & visceral pleura?
Pleural cavity
Vessel returning blood from upper body?
Superior vena cava
Fluid buildup around lungs?
Pleural effusion
Ribs 11/12 are known as?
Floating ribs
Accessory muscles used during heavy exercise?
Sternocleidomastoid, scalenes, abdominal muscles
Lung region above clavicles?
Apex of lung
Which side of heart pumps deoxygenated blood?
Right side of heart
Low oxygen levels in blood?
Hypoxemia