all of the above

warms inhaled air

serves as a resonating chamber that amplifies the voice

detects odors in the airstream

Both b and c

C. The trachea is supported by C-shaped of hyaline cartilage

B. The respiratory membrane is a blood are barrier that has blood flowing past on one side and gas out other

A. Aspirated foreign objects lodge in the left main bronchus more often than the right

A. The laryngopharynx serves as a passageway for food only

B.The laryngopharynx is lined with stratified squamous epithelium

Both b and c

C. The esophagus is located in front of the trachea

This respiratory pressure is 4 less than atmospheric pressure

The absolute pressure in this respiratory region is 756 mm Hg

none of the above

Both a and b

Both a and b

none of the above

B. Between meals, hepatocytes breaks down stored glycogen and releases glucose into the blood

A. Alveolar macrophages keeps the alveoli free of debris

segmental (tertiary) bronchi

none of the above

Main (primary) bronchi

trachea

Type I alveolar cells

Type II alveolar cells

Alveolar macrophages

none of the above

False

True

Surfactant increases the surface tension of alveolar fluid

Intrapleural pressure (Pip) is the pressure in the pleural cavity

Slow, shallow breathing increases (CO2) in the blood and as a result, carbonic acid levels increases and blood pH drops

Surfactant is a detergent-like lipid and protein complex

Dalton's Law of Partial pressure

none of the above

Boyle’s Law

Henry’s Law

The pontine Respiratory Centers can never modify the activity of the VRG (Ventral Respiratory Group)

The respiratory mucosa is a pseudostratified ciliated columnar epithelium, containing scattered goblets cells

Gas exchanges that occur between blood & alveoli and between blood & tissue cells take place by diffusion

bOth a and b

all four heme groups carry O2

two heme groups carry O2

three heme groups carry O2

one heme group carries O2

C. External respiration is not influenced by ventilation-perfusion coupling

Both a and b

B. External respiration is influenced by the thickness and surface area of the respiratory membrane

A. Both the intrapulmonary pressure (Ppul) and Intrapleural (Pip) fluctuates with breathing

active process, less on

active process, more on

passive process, more on

passive process, less on

The amount of pleural fluid in the pleural cavity must remain minimal to maintain a positive Pip (Intrapleural pressure)

The outrush of HCO3- from RBCs can be balanced as CT- moves into RBCs from plasma

We produce 2 to 3 liters of gastric juice per day (produced by the gastric gland)

The difference between the Intrapulmonary pressure (Ppul) and the Intrapleural pressure (Pip) is called Transpulmonary pressure