EXPH 386 Final
lung - Answer-the only organ (other than the heart) to receive the entire cardiac output
Functions of the lung include: - Answer-Gas exchange (primary role)
Captures inhaled particles
Breakdown vasoactive substances
Vocalizations (speaking, singing, Etc)
Metabolic Functions of the lung: - Answer--Converts angiotensin I to angiotensin II (found in high
abundance in lung
- Bradykinin (80% inactivated in lung)
-Serotonin ( almost completely removed)
-Norepinephrine (up to 30% removed)
- PGE2 and PGF alpha (almost completely removed)
- Leukotrienes (almost completely removed)
At rest _______ consumed (VO2) approximately 250 mL/min - Answer-O2
At rest _____ produced (Vco2) approximately 300 mL/min - Answer-CO2
,At rest _____ approximately 5,000 mL/min - Answer-ventilation
During exercise VO2 approximately - Answer-3,000 mL/min (up to 6,250 mL/min in athletes)
During exercise Vco2 approximately - Answer-3,000 mL/min (up to 7,000 mL/min in athletes)
During exercise cardiac output is about: - Answer-30,000 mL/min
At rest cardiac output is about - Answer-5,000 mL/min
During exercise the demand for _____ increases - Answer-O2
Metabolic waste includes - Answer-CO2 + H20
As you consume more O2 the amount of metabolic waste_____ - Answer-increase
O2 is used in the _______ to produce ______ - Answer-mitochondria
ATP
Ventilation ________ during exercise - Answer-increases
There is approximately ________ miles in airways in the body - Answer-15,000
Upper airways include: - Answer-Naopharynx, oropharynx, epiglottis, and larynx
, Trachea - Answer-filters and completely humidifies air
Carina - Answer-Dividing point of the 2 Bronchi
Bronchi - Answer-primary conduit into each lung
Bronchioles - Answer-Conducts inspired air through a narrow pathway until mixing with air into alveolar
ducts; periphery of lung
Alveoli - Answer-Provide surface for gas exchange between tissue and blood
- Distal end
- where gas exchange takes place
- terminal sacs
-thin walled
Elastic
Lung is divided into _____ halves - Answer-2
Pleural space - Answer-Potential space between ribs and lung itself
Diaphragm - Answer--Large, flat muscle at the bottom of the chest cavity that helps with breathing
- primary muscle for respiration
- dome shaped
Intercostals - Answer--between ribs; moves ribs for breathing
lung - Answer-the only organ (other than the heart) to receive the entire cardiac output
Functions of the lung include: - Answer-Gas exchange (primary role)
Captures inhaled particles
Breakdown vasoactive substances
Vocalizations (speaking, singing, Etc)
Metabolic Functions of the lung: - Answer--Converts angiotensin I to angiotensin II (found in high
abundance in lung
- Bradykinin (80% inactivated in lung)
-Serotonin ( almost completely removed)
-Norepinephrine (up to 30% removed)
- PGE2 and PGF alpha (almost completely removed)
- Leukotrienes (almost completely removed)
At rest _______ consumed (VO2) approximately 250 mL/min - Answer-O2
At rest _____ produced (Vco2) approximately 300 mL/min - Answer-CO2
,At rest _____ approximately 5,000 mL/min - Answer-ventilation
During exercise VO2 approximately - Answer-3,000 mL/min (up to 6,250 mL/min in athletes)
During exercise Vco2 approximately - Answer-3,000 mL/min (up to 7,000 mL/min in athletes)
During exercise cardiac output is about: - Answer-30,000 mL/min
At rest cardiac output is about - Answer-5,000 mL/min
During exercise the demand for _____ increases - Answer-O2
Metabolic waste includes - Answer-CO2 + H20
As you consume more O2 the amount of metabolic waste_____ - Answer-increase
O2 is used in the _______ to produce ______ - Answer-mitochondria
ATP
Ventilation ________ during exercise - Answer-increases
There is approximately ________ miles in airways in the body - Answer-15,000
Upper airways include: - Answer-Naopharynx, oropharynx, epiglottis, and larynx
, Trachea - Answer-filters and completely humidifies air
Carina - Answer-Dividing point of the 2 Bronchi
Bronchi - Answer-primary conduit into each lung
Bronchioles - Answer-Conducts inspired air through a narrow pathway until mixing with air into alveolar
ducts; periphery of lung
Alveoli - Answer-Provide surface for gas exchange between tissue and blood
- Distal end
- where gas exchange takes place
- terminal sacs
-thin walled
Elastic
Lung is divided into _____ halves - Answer-2
Pleural space - Answer-Potential space between ribs and lung itself
Diaphragm - Answer--Large, flat muscle at the bottom of the chest cavity that helps with breathing
- primary muscle for respiration
- dome shaped
Intercostals - Answer--between ribs; moves ribs for breathing
