BIOD 151 Module 2 Questions and Correct Answers. Complete Solution 2024.
True or false.
The lungs are symmetrical.
False
Hilum
the "root" of the lung
healthy lung tissue is what color
peachy/pink color
pleurae
membranes that surround the lungs and the cavity around the lungs
visceral pl...
BIOD 151 Module 2 Questions and Correct
Answers. Complete Solution 2024.
True or false.
The lungs are symmetrical.
False
Hilum
the "root" of the lung
healthy lung tissue is what color
peachy/pink color
pleurae
membranes that surround the lungs and the cavity around the lungs
visceral pleura
layer of pleura that faces/covers the lung
parietal pleura
outer layer of pleura lying closer to the ribs and chest wall that covers the surface
around the lungs
pleural space/cavity
Space between the visceral and parietal pleural membranes (small)
typically empty but has a small amount of fluid that allows for frictionless breathing
when diseased, this space can fill with air or fluid
what is the function of the pleurae
the pleurae help reduce friction and help with inflation and inhalation
compartmentalize, protect, and lubricate the lungs
the three main functions of the respiratory system
1) air conduction
2) air filtration
3) exchange of gases aka respiration
other things respiratory system has roles in
vocalization, sense of smell. body's pH regulation
structures in the respiratory system
nasal cavity, pharynx, larynx, trachea, bronchi, lungs
what happens to air as it goes from outside the body to the lungs
air is filtered so it has no debris
air is warmed to body temp
air is humidified and becomes saturated with water
nasal cavities aka fossae are composed of what
none and cartilage
nasal septum
a wall of cartilage that divides the nose into two equal sections of left and right fossae
vestibule
most external part of nasal cavity just inside the nostrils
vestibule lining
skin continuation from the face and vissibrae
, Vibrissae
short thick hairs that help filter for the respiratory tract aka nose hairs
nasal conchae or folds
increase the surface area of nasal cavity to aid in warming and humidification of
incoming air
why is the nasal cavity highly vascularized
to warm incoming air
Three regions of the pharynx
nasopharynx, oropharynx, laryngopharynx
nasopharynx
connection between nasal cavity and pharynx - superior region of the pharynx at the
back of the nose and above the soft palate
Eustachian tube
connects the middle ear with the nasopharynx and allows passage of air
oropharynx
central portion of the pharynx caudal to the mouth and anterior to the epiglottis
laryngopharynx
inferior part of the pharynx connecting the pharynx to the opening into the larynx and
esophagus
what separates the nasal cavity from the oral cavity in the mouth
the hard and soft palates
hard palate
roof of the mouth
aspiration
when food or liquid accidentally enters the trachea
may cause pneumonia
Pharynx
passageway for food to the esophagus and air to the larynx
advantages of shared passageway of the pharynx
1) air can enter through the mouth when nasal cavity is obstructed
2) allows for relatively normal breathing while eating
3) greater air intake during heavy exercise that requires more gas exchange
soft palate
the muscular posterior portion of the palate that closes off the nasopharynx during
swallowing or speaking
glottis
an opening in the larynx where vocal folds are located
Larynx
voice box; passageway for air moving from pharynx to trachea; contains vocal cords
vocal folds (true vocal cords)
at the edges of the glottis and embedded in mucous membranes
flexible and pliable bands of connective tissue that vibrate with expelled air to create
sound (speech)
single cartilages
thyroid, cricoid, epiglottis
epiglottis
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