BIO 141 EXAM #4 || 100% VALID SOLUTIONS.
respiration correct answers exchange of gases between tissues
transport of gases to tissues
ventilation of the lungs (inhalation)
the use of oxygen for metabolism
upper air conducting correct answers 1) nasal/ oral cavity
2) pharynx
3)larynx
lower air conducting correct answers 4)trachea
5) bronchi
6) bronchioles
7) alveoli
T or F -- the air conducting structures of the respiratory system are part of the upper and lower
respiratory tract. correct answers T
What cleanses, warms and humidifies the air as it enters the body? correct answers the nose and
pharynx
goblet cells correct answers mucus producing cells that line the walls of the nose and pharynx
ciliated cells correct answers help move the mucus downwards toward the esophagus
provide passage of air to the lungs correct answers larynx, trachea, and bronchi
lung pleura correct answers visceral pleura, parietal pleura --each lung is associated with the two
continuous membranes
visceral pleura correct answers on the surface of the lung
parietal pleura correct answers on the inner surface of the rib cage
thoracic cavity correct answers where the lungs are located-- the space enclosed by ribs and the
muscular diaphragm
Three pressures of ventilation correct answers 1) intrapleural pressure
2) atmospheric pressure
3) intrapulmonary pressure
intrapleural pressure correct answers pressure between the membranes --
-constant unless injured
-prevents lungs from collapsing
-also helps. lungs change size with changing size of thoracic cavity
, atmospheric pressure correct answers air pressure OUTSIDE of the body
intrapulmonary pressure correct answers air pressure INSIDE the lungs
if there is an increase in lung volume, intrapulmonary pressure ______ compared to atmospheric
pressure correct answers decreases
pulmonary ventilation correct answers gradients of pressure cause air movement into or out of
our lungs
boyles law correct answers the pressure of a given quantity of gas is INVERSELY
PROPORTIONAL to its volume
--gases move from HIGH to LOW pressure
-- gases IN our body move from HIGH to LOW pressure
Inhalation correct answers diaphragm contracts and lowers (increases size of thoracic cavity)
--rib muscle contract and expand the cage --causes thoracic volume to increase, pressure then
decreases
-- Air moves from HIGH to LOW pressure. P(outside) > P(inside)
Passive exhalation correct answers -diaphragm relaxes and moves up
-rib muscles relax --cases thoracic volume to decrease--pressure then increases
--Air moves from high pressure to low pressure
(during "forced" exhalation other muscles (abs) are involved P(inside ) > P(outside )
respiratory rate (f) correct answers breaths per minute (average-- 15)
Tidal volume (Vt) correct answers amount of gas inhaled during one breath (average 500 mL)
respiratory minute volume (Ve) correct answers -volume inhaled in one minute
-Ve= f x Vt
-Ve = 15 / minute *500 mL = 7500 mL or 7.5 liters/minute
alveolar ventilation (Va) correct answers -air at the alveolar respiratory membrane per minute
--subtract air from trachea and major bronchi not involved in exchange (anatomic dead space--
Vd is a constant) from tidal volume
-- Va= f * (Vt-Vd)
-- Va = 15 *( 500mL- 150 mL ) = 520 mL or 5.25 liters/minute
if the patient has a respiratory rate of 10 breaths/ minute and a tidal volume of 400 mL what is
their respiratory minute volume? correct answers 4000 mL
The structure where the nasal cavity and oral cavity connect at the back of the throat is called the
___________. correct answers pharynx
respiration correct answers exchange of gases between tissues
transport of gases to tissues
ventilation of the lungs (inhalation)
the use of oxygen for metabolism
upper air conducting correct answers 1) nasal/ oral cavity
2) pharynx
3)larynx
lower air conducting correct answers 4)trachea
5) bronchi
6) bronchioles
7) alveoli
T or F -- the air conducting structures of the respiratory system are part of the upper and lower
respiratory tract. correct answers T
What cleanses, warms and humidifies the air as it enters the body? correct answers the nose and
pharynx
goblet cells correct answers mucus producing cells that line the walls of the nose and pharynx
ciliated cells correct answers help move the mucus downwards toward the esophagus
provide passage of air to the lungs correct answers larynx, trachea, and bronchi
lung pleura correct answers visceral pleura, parietal pleura --each lung is associated with the two
continuous membranes
visceral pleura correct answers on the surface of the lung
parietal pleura correct answers on the inner surface of the rib cage
thoracic cavity correct answers where the lungs are located-- the space enclosed by ribs and the
muscular diaphragm
Three pressures of ventilation correct answers 1) intrapleural pressure
2) atmospheric pressure
3) intrapulmonary pressure
intrapleural pressure correct answers pressure between the membranes --
-constant unless injured
-prevents lungs from collapsing
-also helps. lungs change size with changing size of thoracic cavity
, atmospheric pressure correct answers air pressure OUTSIDE of the body
intrapulmonary pressure correct answers air pressure INSIDE the lungs
if there is an increase in lung volume, intrapulmonary pressure ______ compared to atmospheric
pressure correct answers decreases
pulmonary ventilation correct answers gradients of pressure cause air movement into or out of
our lungs
boyles law correct answers the pressure of a given quantity of gas is INVERSELY
PROPORTIONAL to its volume
--gases move from HIGH to LOW pressure
-- gases IN our body move from HIGH to LOW pressure
Inhalation correct answers diaphragm contracts and lowers (increases size of thoracic cavity)
--rib muscle contract and expand the cage --causes thoracic volume to increase, pressure then
decreases
-- Air moves from HIGH to LOW pressure. P(outside) > P(inside)
Passive exhalation correct answers -diaphragm relaxes and moves up
-rib muscles relax --cases thoracic volume to decrease--pressure then increases
--Air moves from high pressure to low pressure
(during "forced" exhalation other muscles (abs) are involved P(inside ) > P(outside )
respiratory rate (f) correct answers breaths per minute (average-- 15)
Tidal volume (Vt) correct answers amount of gas inhaled during one breath (average 500 mL)
respiratory minute volume (Ve) correct answers -volume inhaled in one minute
-Ve= f x Vt
-Ve = 15 / minute *500 mL = 7500 mL or 7.5 liters/minute
alveolar ventilation (Va) correct answers -air at the alveolar respiratory membrane per minute
--subtract air from trachea and major bronchi not involved in exchange (anatomic dead space--
Vd is a constant) from tidal volume
-- Va= f * (Vt-Vd)
-- Va = 15 *( 500mL- 150 mL ) = 520 mL or 5.25 liters/minute
if the patient has a respiratory rate of 10 breaths/ minute and a tidal volume of 400 mL what is
their respiratory minute volume? correct answers 4000 mL
The structure where the nasal cavity and oral cavity connect at the back of the throat is called the
___________. correct answers pharynx
