Respiratory System Flashcards
Rib
- supports chest region
* protects lungs and heart
Lungs
•Contains bronchioles alveoli and blood vessels
Bronchioles
•smaller branches off trachea
Alveoli
•tiny air sacs, 1 million per lung
Red blood cells
- carry oxygen
* loose nucleus at maturity to increase O2 capacity
Pulmonary capillary (vessels)
- thin tiny blood vessels
* O2 passes through this and then onto red blood cells
Nasal cavity
- air enters here
* debris captured by cilia on columnar epithelial cells
Pharynx
- throat region
* food also passes through here
Larynx
•voice box at top of trachea
Trachea
- windpipe
- reinforced by cartilage
- passes through chest region in middle
Bronchus (bronchi)
•major branches off trachea
Diaphragm
•muscle that pulls lungs down for inhalation and pushes up for exhalation
In what would an O2 molecule travel through on its way into the body?
Nasal cavity > pharynx > larynx > trachea > bronchus > lungs > bronchioles > alveoli > pulmonary capillary > red blood cells
In what would a CO2 molecule travel through on its way out of the body?
Pulmonary capillary > alveolus > bronchioles > (exits lung) > bronchus > trachea > larynx > pharynx > nasal cavity
Name the parts of the respiratory system (12)
Rib Lungs Bronchioles Alveoli (alveolus) Red blood cells Pulmonary capillary (vessels) Nasal cavity Pharynx Larynx Trachea Bronchus Diaphragm
