Question | Answer |
exchange of gases between the blood and air at the lung alveoli | external respiration |
gas exchange between the blood and the tissue cells | internal respiration |
name the 10 structures in order which air passes through once it is inhaled | 1) nose, 2) nasal cavity, 3) paranasal sinuses, 4) pharynx, 5) larynx, 6) trachea, 7) bronchi, 8) bronchioles, 9) lungs, 10) alveoli |
transports the air, includes all structures of the respiratory system up to the respiratory bronchioles | conducting zone |
where does the conducting zone terminate? | the terminal bronchioles |
the site of gas exchange, the end part of the respiratory tree, starts at the respiratory bronchioles | respiratory zone |
three functions of the nose | moistens, warms, and filters air |
external nares | nostrils |
external nares are divided by the | nasal septum |
posterior nasres also called | choanae |
regions of the pharynx from superior to inferior | nasopharynx, oropharynx, laryngopharynx |
lateral walls of the nasal cavity formed by the (3 bones) | superior concha, middle concha, inferior concha |
floor of the nasal cavity formed by (2 bones) | palatine and maxillary bones |
floor of the nasal cavity formed by (2 bones) | palatine and maxillary bones |
roof of the nasal cavity formed by (3 bones) | ethmoid, frontal, sphenoid |
a funnel-shaped passageway that connects the nasal cavity and mouth | pharynx |
the portion of the pharynx that is for air only | nasopharynx |
opening from the pharynx to the larynx | glottis |
three of the nine pieces of cartilage that constitute the larynx | thyroid, cricoid, and laryngeal prominence |
another name for the laryngeal prominence | Adam's apple |
the guardian of the airways | epiglottis |
an internal ridge that marks the bifurcation of the bronchi | carina |
windpipe | trachea |
posterior part of the cartilage rings that make up the trachea is formed by the ____ muscle | trachealis |
how many divisions of the bronchial tree are there? | 23 |
the main right and left bronchial division is classified as ___ bronchi | primary |
the second division of the bronchi, how many right and left? two names for this division | 3 right, 2 left-secondary/lobar bronchi |
third division of bronchi, how many in each lung? two names for this division | 10 in each lung-teriary/segmental bronchi |
little bronchi, less than 1 mm in diameter | bronchioles |
last part of the conducting zone, less than .5 mm in diameter | terminal bronchioles |
bronchioles which branch from terminal bronchioles, lead to the alveolar ducts | respiratory bronchioles |
gas exchange across the alveoli and blood capillaries is accomplished by | simple diffusion |
a double-layered sac surrounding each lung | pleurae |
portion of the lungs deep to the ribs | costal surface |
superior tip of each lung | apex |
inferior portion of lung which sits atop the diaphragm (two names) | base, diaphragmatic surface |
medial surface of the lung | mediastinal surface |
opening on each lung for bronchial tubes and any vessels/nerves | hilus |
space on the left lung which accomodates for the heart | cardiac notch |
how many lobes of the left lung? | 2 |
how many lobes of the right lung? | 3 |
how many fissures in the left lung? | 1 |
name of the fissure in the left lung | oblique fissure |
how many fissures in the right lung? | 2 |
names of the fissures of the right lung-which is the more superior, and which is more inferior? | horizontal/transverse (more superior), oblique (inferior) |
how many segments per lung? | 10 |
the smallest division of the lung tissue seen with the naked eye | lobules |
the supporting tissue surrounding each lung structure, "supporting mattress" | stroma |