TEAS 7 - Science (Respiratory System) Flashcards
The nasal cavity has a defined role in filtering and humidifying ___ for presentation to the lower airway
air
The pharynx is also known as the ___.
throat
In the respiratory system, the pharynx receives air from the ___ or the mouth and then moves the air past the epiglottis into the larynx. In the ___ system, it receives food from the mouth and moves it into the esophagus.
nose
digestive
The ___ is a large tube reinforced by cartilage rings that keep it from collapsing. It connects the larynx to the bronchi of the lungs.
trachea
Bronchi receive inspired air from the ___ and move it into the bronchioles
trachea
Bronchioles connect the bronchi to the ___ of the lungs. Bronchioles have a layer of ___ muscle that allows bronchoconstriction and bronchodilation, regulating the amount of air reaching the alveoli.
alveoli
smooth
Where does gas exchange occur?
alveoli
Alveoli is the site of ___ exchange.
gas
The Epiglottis is a flap of ___ at the root of the tongue, which is depressed during swallowing to cover the opening of the windpipe.
cartilage
The ___ is the part of the larynx consisting of the vocal cords and the opening between them. It affects voice modulation through expansion or contraction.
glottis
The larynx (voice box) is a hollow structure connected to the ___ of the ___ and is the passage through which inspired air moves into the bronchi of the lungs.
top
trachea
The diaphragm is a skeletal muscle associated with quiet (normal) breathing that separates the ___ and ___ cavities.
thoracic
abdominopelvic
The ___ is the serous double membrane that surrounds and protects the lungs.
pleura
What do we call the movement of respiratory gases between the atmosphere and the alveoli of the lungs?
ventilation
What are the two cyclic phases of the lungs?
inspiration
expiration
What are the two types of respiration?
external respiration
cellular respiration
___ respiration is the movement of gases into the body and blood.
External
___ respiration is the use of oxygen and production of carbon dioxide by the cells.
Cellular
The respiratory system can be divided into the ___ and ___ respiratory systems.
upper
lower
What does the upper respiratory system consist of?
nose, nasal cavity, sinus, pharynx, and portion of larynx above vocal cords
What does the lower respiratory system consist of?
portion of the larynx that includes the vocal cords and below, trachea, bronchi, bronchioles, lungs, and alveoli
Air moves into the upper respiratory system through the ___ at the nostrils to the nasal cavity
nose
The epithelium lining the nasal cavity contains columnar and goblet cells that secrete ___.
mucous
Where is mucous formed?
nose
What are the bony protuberances in the nose called?
conchae
The nasal cavity contains bony protuberances called conchae. There are superior, middle, and inferior ___. The purpose of the conchae is to create ___ airflow. This is intended to ___ the air and to provide more contact with the nasal mucosa and hairs so that the ___ can pick up particles. The turbulent air can also reach the upper nasal cavity containing sensory receptors for smell.
conchae
turbulent
warm
mucosa
What are the 3 parts of the pharynx?
nasopharynx, oropharynx, and laryngopharynx
Air passes through the nasal cavity and enters the upper portion of the pharynx called the ___. It begins posterior to the conchae and extends to the soft palate.
nasopharynx
The nasopharynx begins ___ to the conchae and extends inferiorly to the soft palate. The soft palate raises to close off the nasopharynx during ___ to prevent substances from moving into the nasopharynx. The nasopharynx also contains connections from the Eustachian tubes.
posterior
swallowing
What is inferior to the nasopharynx and extends from the soft palate to the epiglottis?
the oropharynx
Inferior to the nasopharynx is the ___ which extends from the soft palate to the epiglottis. The oropharynx is a ___ passageway for air and substances on their way to the digestive tract.
oropharynx
shared
What is the most inferior portion of the pharynx?
laryngopharynx
The most inferior portion of the pharynx is the ___ which extends from the tip of the epiglottis to the ___. The laryngopharynx is also a shared pathway with the digestive tract.
laryngopharynx
larynx
The larynx begins at the base of the ___ and extends to the ___.
tongue
trachea
The larynx contains ___, the largest of which is the ___ cartilage, commonly called the Adam’s Apple. Inferior to the thyroid cartilage is the ___ cartilage.
cartilage
thyroid
cricoid
The epiglottis is an elastic cartilage flap, in the larynx, that ___ during swallowing to keep substances from moving into the trachea and air passages.
closes
Other cartilages in the larynx include the arytenoids, corniculate, and cuneiform cartilages. These cartilages are ___.
paired
Where do the vocal cords reside?
larynx
The ___ ___ reside in the larynx and consist of two pairs of ligaments that extend from the arytenoid to the thyroid cartilages.
vocal cords
There are two pairs of ligaments inside the larynx. One set of ligaments is called the ___ vocal cords while the other set is called the ___ vocal cords.
true, false
When the vocal cords are relaxed they form a triangular space called the ___.
glottis
When do the vocal cords form the triangular space called the glottis?
when they are relaxed
Different pitches in the voice are produced by ___ of the vocal cords. The vibration of ___ areas of the vocal cords results in higher pitches. Males typically have longer vocal cords than females which results in ___ pitches.
vibrations
shorter
lower
The lungs are two cone shaped structures residing in the ___ cavity.
thoracic
The inferior portion of each lung reaches down to the ___. The superior portion extends about one inch above each ___.
diaphragm
clavicle
How many lobes does the right lung contain?
3
How many lobes does the left lung contain?
2
Which lung is larger? Left or Right?
Right lung
The right lung contains three lobes called ___, ___, and ___ lobes. The right lung is ___ than the left lung. The left lung contains two lobes called the ___ and ___ lobes.
superior, middle, inferior
larger
superior, inferior
The lobes are separated by ___. The right lung includes a ___ and ___ fissure while the left lung only contains an oblique fissure.
fissures
horizontal
oblique
What is the area in the medial area of each lung where vessels enter and exit?
hilum
The left lung also contains the ___ ___ which is an indentation for the heart.
cardiac notch
The lungs are surrounded by ___ pleural membranes.
2
visceral and parietal pleural membranes
The surface of each lung contains a ___ pleural membrane that closely adheres to the lung’s surface. Lining the interior of the thoracic wall is the ___ pleural membrane. A fluid known as ___ ___ is secreted by each membrane which reduces friction and helps to hold the membranes together.
visceral
parietal
pleural fluid
___ is the passive transport process of gas exchange in the lungs where oxygen moves from the lungs to the blood and carbon dioxide in the blood moves into the lungs.
Diffusion
Diffusion is the ___ transport process of gas exchange in the lungs where ___ moves from the lungs to the blood and ___ ___ in the blood moves into the lungs.
passive
oxygen
carbon dioxide
What is the pressure of a single gas in a mixture of gases?
partial pressure
What is Boyle’s Law?
volume is inversely related to pressure in gases
___ is the movement of respiratory gases between the atmosphere and the alveoli of the lungs → consists of two cyclic phases: inspiration & expiration
ventilation
One cycle of inhalation and exhalation is called a ___ ___.
respiratory cycle
Inhalation and exhalation depend on changes in lung ___ and air ___.
volume
pressure
The movement of air in and out of the lungs is known as ___ ___.
pulmonary ventilation
Air moves into the lungs and to the alveoli where oxygen and carbon dioxide diffuse between the ___ and ___. It is important to maintain good airflow to the alveoli at all times.
alveoli
blood
Air is a ___ and gas moves by way of pressure gradients. Gas will move from areas of ___ pressure to areas of ___ pressure.
gas
higher
lower
Pressure in the lungs must be ___ than atmospheric pressure for air to move into the lungs. This is because air is a gas and we know that gases move from areas of ___ pressure to areas of ___ pressure.
lower
high
low
Boyle’s law relates pressure and volume. It can be represented by:
P = 1/V
(P = pressure, V = volume)
Boyle’s law shows that volume is ___ related to pressure in gases
inversely
Molecules of a gas will move at random within an enclosed space producing pressure on the walls of the space. The same amount of gas in a smaller space will exert a ___ pressure than when in a larger space. So increasing the volume will ___ the pressure for a given temperature and vice versa.
greater
lower
The diaphragm contracts and pulls downward ___ the volume of the thoracic cavity. The external intercostals also contract and expand the ribcage. The increased volume ___ the pressure inside of the lungs. Since air flows from higher pressure to lower pressure, higher air pressure ___ the lungs flows to lower pressure ___ the lungs.
increasing
decreases
outside
inside
Expansion of the thoracic cavity causes the lungs to expand because of the ___ cavity. The pleural membranes secrete a ___ that forms a bond between the membranes. The force of this bond produces a small negative pressure
pleural
fluid
During exhalation, the diaphragm relaxes, ___ the volume of the thoracic cavity. The elastic fibers of the lungs work to move the lungs back to their original shape and the pressure ___, moving air out of the lungs. Resting exhalation is considered a passive process.
decreasing
increases
During ___, the diaphragm contracts, expanding to allow air into the thoracic cavity. During ___, the diaphragm relaxes. Resting exhalation is considered a ___ process.
inhalation
exhalation
passive
Other muscles, besides the diaphragm, are involved in respiration when greater amounts of air need to be moved into the lungs. Muscles assisting in ___ include the sternocleidomastoids, pectoralis minors and external intercostals. Muscles assisting in ___ include the internal intercostals and abdominals.
inhalation
exhalation
Once air enters the lungs, oxygen must move into the blood by ___.
diffusion