The Body in Health
This body cavity contains the lungs and heart.
What is the thoracic cavity?
This structure serves as a shared passageway for air and food.
What is the pharynx (throat)?
These tiny air sacs are the primary sites of oxygen and carbon dioxide exchange.
What are alveoli?
This dome-shaped muscle separates the thoracic and abdominal cavities.
What is the diaphragm?
This gas is released as a waste product of cellular metabolism and eliminated by the lungs.
What is carbon dioxide?
This anatomical term describes a structure located closer to the body's midline.
What is medial?
This flap of tissue helps protect the airway when swallowing.
What is the epiglottis?
This lung has three lobes.
What is the right lung?
These muscles are found between the ribs and help move the rib cage.
What are the intercostal muscles?
This process refers to the movement of air into and out of the lungs.
What is ventilation?
This anatomical plane separates the body into anterior and posterior portions.
What is the frontal (coronal) plane?
This structure contains the vocal cords and is commonly called the voice box.
What is the larynx?
These membranes directly cover the surface of the lungs and line the thoracic cavity.
What are pleura?
This nerve provides motor innervation to the diaphragm.
What is the phrenic nerve?
This process involves the exchange of oxygen and carbon dioxide.
What is respiration?
This directional term means toward the head or upper portion of the body.
What is cephalad (cranial)?
This point marks the division of the trachea into the two mainstem bronchi.
What is the carina?
These structures are the first airways where gas exchange can occur.
What are respiratory bronchioles?
The first seven pairs of ribs belong to this classification because they attach directly to the sternum.
What are true ribs?
This upper airway structure warms, humidifies, and filters inspired air.
What is the nose (nasal cavity)?
These four sections are used to describe locations within the abdomen.
What are the four abdominopelvic quadrants?
These small conducting airways lack cartilage and lead toward the respiratory zone.
What are bronchioles?
This portion of the left lung is anatomically comparable to the right middle lobe.
What is the lingula?
Increased use of these muscles during breathing may indicate respiratory distress.
What are accessory muscles of ventilation?
This sequence describes the path of inspired air after the larynx until it reaches the alveoli.
What is trachea → bronchi → bronchioles → alveolar ducts → alveoli?