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Portage Learning A&P 1 - Module 2 Answers .
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Portage Learning A&P 1 - Module 2 Answers .
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Portage Learning A&P 1 - Module 2Answers
Gross Anatomy - ANS-Study of structures that can be seen with the naked eye
Gross Anatomy of the Lungs - ANS-The right lung has three lobes while the left lung
has two lobes. The both lungs have oblique fissures. The right lung also has a
horizontal fissure separating the superior and middle lobes
hilum - ANS-the root where the pulmonary blood vessels and veins enter the lung. This
is also where the trachea turns into the bronchi.
pleura - ANS-membranes that cover the surface of the lung and the cavity surrounding
the lungs
parietal pleura - ANS-covers the surfaces surrounding the lungs: the rib cage,
diaphragm, and mediastinum.
visceral pleura - ANS-directly covers the lungs
pleural space/cavity - ANS-The space that is formed between the pleurae. Normally, this
space is empty except for a scant amount of fluid. However, in the diseased state, this
cavity can fill with air or fluids.
anatomical organization of the respiratory system - ANS-allows the respiratory system
to perform three main functions: 1) air conduction, 2) air filtration, and 3) exchange of
gases - aka respiration
Conducting portion of respiratory system - ANS-responsible for moving air in and out of
lungs. air is filtered so that it is free of debris, warmed, and humidified. By the time the
air reaches the lungs, it is at body temperature and saturated with water.
nostril - ANS-have hair and cilia that filter the air , have goblet cells that trap
nasal cavities - ANS-aka fossae, composed of bone and cartilage, are made up of
several parts. The left and right fossae are separated by the nasal septum.
vestibule - ANS-is the most external portion of the nasal cavity just inside the nostrils.It
, is covered with stratified squamous epithelium. Inside are short thick hairs to catch
debris. Down the middle is a nasal septum.
nasal conchae - ANS-found in nasal cavity. responsible for warming air as it moves past.
Important so the body can do less work during respiration. We want air to be warm and
moist before it enters the lungs
Pharynx - ANS-Throat; the membrane-lined cavity behind the nose and mouth,
connecting them to the esophagus. Has 3 parts: nasopharynx, oropharynx,
laryngopharynx
nasopharynx - ANS-connection area between the nasal cavity and pharynx, generally
above the soft palate- has this name bc connects to nasal cavity
oropharynx - ANS-caudal to the mouth and anterior to the epiglottis. Has this name bc
located behind oral cavity.
laryngopharynx - ANS-area where the pharynx, larynx and esophagus meet. Stratified
squamous epithelium protects these tissues from frictional damage.
Esophagus - ANS-lies posterior to the larynx and trachea. It is a muscular tube
connecting the pharynx with the stomach. It is lined with mucosa. It is the tube that is
used for food and nutrients.
Trachea (windpipe) - ANS-passageway for air from larynx to the bronchi. It is composed
of about 20 C-shaped, cartilaginous rings that do not completely meet on the posterior
side of this tube- they help hold open airway.
hard palate and soft palate - ANS-separate oral cavity from nasal cavity
hard palate - ANS-roof of the mouth
soft palate - ANS-closes nasal cavity when we are eating to make sure food and liquid
do not enter the nasal cavity.
aspiration - ANS-when food or liquid accidentally enters the trachea. This may happen
because bothfood and air cross in this region.
Larynx - ANS-Attached to the trachea. Can physically feel going up and down when you
swallow. This tube is permanently held open to receive air. It is made up of single
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