ANAT&PHY 235 M9&M10 (HUMAN PHYSIOLOGY AND HEALTH ANATOMY & PHYSIOLOGY
235 MODULE 9 AND MODULE 10) WITH COMPLETE SOLUTIONS 100% VERIFIED LATEST
UPDATE!!
what are the primary homeostatic functions performed by the respiratory system? - (ANSWER)- gas
exchange with the external enviornment
- pH balance
- protection from inhaled substances
- vocalization
- water and heat loss
- respiratory pump (venous return)
Four integrated processes that are collectively called external respiration - (ANSWER)1) Pulmonary
ventilation
2)pulmonary gas exchange
3) respiratory gas transport (CV system)
4) tissue gas exchange
pulmonary ventilation - (ANSWER)mechanics of breathing
pulmonary gas exchange - (ANSWER)gas exchange between external air and pulmonary capillaries
across alveolar walls
respiratory gas transport - (ANSWER)transportation of O2 and CO2 to and from the lungs and tissue cells
tissue gas exchange - (ANSWER)gas exchange between the systemic capillaries and the tissue walls
which external respiration processes are the CV system responsible for? - (ANSWER)Respiratory gas
transport, tissue gas exchange
,ANAT&PHY 235 M9&M10 (HUMAN PHYSIOLOGY AND HEALTH ANATOMY & PHYSIOLOGY
235 MODULE 9 AND MODULE 10) WITH COMPLETE SOLUTIONS 100% VERIFIED LATEST
UPDATE!!
which external respiration processes are the respiratory ystem responsible for? - (ANSWER)pulmonary
ventilation, pulmonary gas exchange
path of O2 molecule through external respiration processes - (ANSWER)Oxygen moves in through the
conducting airways --> alveoli --> pulmonary capillaries --> systemic capillaries --> systemic tissues
path of CO2 molecule through external respiration processes - (ANSWER)tissues --> systemic capillaries -
-> pulmonary capillaries --> alveoli --> exhaled into envionrment
Conducting airways - (ANSWER)nasal and oral cavities, pharynx, epiglottis, larynx, trachea, bronchi,
terminal bronchioles and respiratory bronchioles
Why is the mucus escalator important to the function of the respiratory system? - (ANSWER)It
continually clears the airways of inhaled particles, including pathogens, before they can reach the
delicate tissue of the lungs
nasal and oral cavities - (ANSWER)Beginning of the respiratory system which moistens, warms, and
filters air as it enters the body.
pharynx - (ANSWER)in throat; where air from nasal and oral cavities meets and combines
epiglottis - (ANSWER)flap made of cartilage that covers the trachea during swallowing so that food is
directed to esophagus not into airway
larynx - (ANSWER)where vocal chords are located
trachea - (ANSWER)has cartilage rings surrounding it which help it to prevent from collapsing when
negative pressures are generated in thoracic cavity during inspiration
, ANAT&PHY 235 M9&M10 (HUMAN PHYSIOLOGY AND HEALTH ANATOMY & PHYSIOLOGY
235 MODULE 9 AND MODULE 10) WITH COMPLETE SOLUTIONS 100% VERIFIED LATEST
UPDATE!!
bronchi - (ANSWER)branch from trachea into each lunge, then further divide into many passageways to
the smallest airways called terminal bronchioles then respiratory bronchioles
where does gas exchange occur in the respiratory system - (ANSWER)alveoli
alveoli - (ANSWER)Small round structures at end of conducting airways
Have very thin walls so O2 and CO2 can diffuse across
types of cells in alveoli - (ANSWER)- Type 1: epithelial cells that make up wall are juxtaposed with
pulmonary capillaries
- Type 2: secrete pulmonary surfactant which reduces surface tension in alevoli to keep them open
- Macrophages: immune cells that engulf and destroy foreign particles
where are the lungs located - (ANSWER)thoracic cavity
visceral pleura - (ANSWER)membrane lining outside of the lungs
parietal plura - (ANSWER)membrane lining inside of chest wall
relationship between parietal pleura, visceral pluera and space between - (ANSWER)the two membranes
are closely juxtaposed with very thin potential space between them (pleural cavity)
why is the pleural cavity important for normal lung function - (ANSWER)the lungs have elastic tissue and
are always pulling inward, while the chest wall with ribs tends to pull outward. When the two sides pull
away from each other this creates a negative pressure (relative to atmosphere pressure) in the pleural
cavity, but they never actually separate. If air were to get into the pleural cavity a pneumothorax could
occur which is the lungs collapsing on themselves and no longer being able to inflate.
235 MODULE 9 AND MODULE 10) WITH COMPLETE SOLUTIONS 100% VERIFIED LATEST
UPDATE!!
what are the primary homeostatic functions performed by the respiratory system? - (ANSWER)- gas
exchange with the external enviornment
- pH balance
- protection from inhaled substances
- vocalization
- water and heat loss
- respiratory pump (venous return)
Four integrated processes that are collectively called external respiration - (ANSWER)1) Pulmonary
ventilation
2)pulmonary gas exchange
3) respiratory gas transport (CV system)
4) tissue gas exchange
pulmonary ventilation - (ANSWER)mechanics of breathing
pulmonary gas exchange - (ANSWER)gas exchange between external air and pulmonary capillaries
across alveolar walls
respiratory gas transport - (ANSWER)transportation of O2 and CO2 to and from the lungs and tissue cells
tissue gas exchange - (ANSWER)gas exchange between the systemic capillaries and the tissue walls
which external respiration processes are the CV system responsible for? - (ANSWER)Respiratory gas
transport, tissue gas exchange
,ANAT&PHY 235 M9&M10 (HUMAN PHYSIOLOGY AND HEALTH ANATOMY & PHYSIOLOGY
235 MODULE 9 AND MODULE 10) WITH COMPLETE SOLUTIONS 100% VERIFIED LATEST
UPDATE!!
which external respiration processes are the respiratory ystem responsible for? - (ANSWER)pulmonary
ventilation, pulmonary gas exchange
path of O2 molecule through external respiration processes - (ANSWER)Oxygen moves in through the
conducting airways --> alveoli --> pulmonary capillaries --> systemic capillaries --> systemic tissues
path of CO2 molecule through external respiration processes - (ANSWER)tissues --> systemic capillaries -
-> pulmonary capillaries --> alveoli --> exhaled into envionrment
Conducting airways - (ANSWER)nasal and oral cavities, pharynx, epiglottis, larynx, trachea, bronchi,
terminal bronchioles and respiratory bronchioles
Why is the mucus escalator important to the function of the respiratory system? - (ANSWER)It
continually clears the airways of inhaled particles, including pathogens, before they can reach the
delicate tissue of the lungs
nasal and oral cavities - (ANSWER)Beginning of the respiratory system which moistens, warms, and
filters air as it enters the body.
pharynx - (ANSWER)in throat; where air from nasal and oral cavities meets and combines
epiglottis - (ANSWER)flap made of cartilage that covers the trachea during swallowing so that food is
directed to esophagus not into airway
larynx - (ANSWER)where vocal chords are located
trachea - (ANSWER)has cartilage rings surrounding it which help it to prevent from collapsing when
negative pressures are generated in thoracic cavity during inspiration
, ANAT&PHY 235 M9&M10 (HUMAN PHYSIOLOGY AND HEALTH ANATOMY & PHYSIOLOGY
235 MODULE 9 AND MODULE 10) WITH COMPLETE SOLUTIONS 100% VERIFIED LATEST
UPDATE!!
bronchi - (ANSWER)branch from trachea into each lunge, then further divide into many passageways to
the smallest airways called terminal bronchioles then respiratory bronchioles
where does gas exchange occur in the respiratory system - (ANSWER)alveoli
alveoli - (ANSWER)Small round structures at end of conducting airways
Have very thin walls so O2 and CO2 can diffuse across
types of cells in alveoli - (ANSWER)- Type 1: epithelial cells that make up wall are juxtaposed with
pulmonary capillaries
- Type 2: secrete pulmonary surfactant which reduces surface tension in alevoli to keep them open
- Macrophages: immune cells that engulf and destroy foreign particles
where are the lungs located - (ANSWER)thoracic cavity
visceral pleura - (ANSWER)membrane lining outside of the lungs
parietal plura - (ANSWER)membrane lining inside of chest wall
relationship between parietal pleura, visceral pluera and space between - (ANSWER)the two membranes
are closely juxtaposed with very thin potential space between them (pleural cavity)
why is the pleural cavity important for normal lung function - (ANSWER)the lungs have elastic tissue and
are always pulling inward, while the chest wall with ribs tends to pull outward. When the two sides pull
away from each other this creates a negative pressure (relative to atmosphere pressure) in the pleural
cavity, but they never actually separate. If air were to get into the pleural cavity a pneumothorax could
occur which is the lungs collapsing on themselves and no longer being able to inflate.
