How many lobes does the right lung contain? - THREE
Air (and not food) move in which of the following areas:
A. Esophagus
B. Nasopharynx
C. Oropharynx
D. Both A. and C. - Nasopharynx
Air and food move in which one of the following areas: - Oropharynx
Ring of cartilage line much of the respiratory tract. In which of the following
would cartilage not be found?
Trachea
Larynx
Bronchi
Alveoli - ANSWER Alveoli
Be able to label the following on a diagram - ANSWER a. Nasal Cavity
b. oral cavity
, c. soft pallet
d. epiglottis
e. glottis
f. trachea
g. esophagus
h. tongue
What actually happens to the epiglottis when swallowing? - ANSWER When
swallowing, the epiglottis tilts downwards to cover the trachea. This prevents
food and liquid from going into the lungs (aspiration).
A premature baby is finding it difficult to produce surfactant. Describe
problems that may occur and why? - ANSWER Surfactant lines the lumina and
stops alveoli from sticking to each other when exhaling. Breathing difficulties
and it will be caused by this because alveoli are not functioning effectively
Explain the difference between type I and type II alveoli cells. - ANSWER
Type I alveolar cells: make up about 95% of alveolar epithelium and form a
very thin, simple squamous epithelium of the alveoli together with capillaries
Type II alveolar cells: Comprise 5%, dispersed among type I cells, secrete and
synthesize pulmonary surfactant on alveolar surface so they stay open, divide to
replace damaged Type I cells.
True/ False: Negative pressure is utilized to force air into lungs? - ANSWER
True: Inhale - causes air to rush into the lungs because it wants to move from a
space of high pressure to space of low pressure
Exhale - causes air to rush out from lungs because it wants to move from a
space of high pressure to space of low pressure
Air (and not food) move in which of the following areas:
A. Esophagus
B. Nasopharynx
C. Oropharynx
D. Both A. and C. - Nasopharynx
Air and food move in which one of the following areas: - Oropharynx
Ring of cartilage line much of the respiratory tract. In which of the following
would cartilage not be found?
Trachea
Larynx
Bronchi
Alveoli - ANSWER Alveoli
Be able to label the following on a diagram - ANSWER a. Nasal Cavity
b. oral cavity
, c. soft pallet
d. epiglottis
e. glottis
f. trachea
g. esophagus
h. tongue
What actually happens to the epiglottis when swallowing? - ANSWER When
swallowing, the epiglottis tilts downwards to cover the trachea. This prevents
food and liquid from going into the lungs (aspiration).
A premature baby is finding it difficult to produce surfactant. Describe
problems that may occur and why? - ANSWER Surfactant lines the lumina and
stops alveoli from sticking to each other when exhaling. Breathing difficulties
and it will be caused by this because alveoli are not functioning effectively
Explain the difference between type I and type II alveoli cells. - ANSWER
Type I alveolar cells: make up about 95% of alveolar epithelium and form a
very thin, simple squamous epithelium of the alveoli together with capillaries
Type II alveolar cells: Comprise 5%, dispersed among type I cells, secrete and
synthesize pulmonary surfactant on alveolar surface so they stay open, divide to
replace damaged Type I cells.
True/ False: Negative pressure is utilized to force air into lungs? - ANSWER
True: Inhale - causes air to rush into the lungs because it wants to move from a
space of high pressure to space of low pressure
Exhale - causes air to rush out from lungs because it wants to move from a
space of high pressure to space of low pressure
