Lymphatic system, respiratory system,circulatory system Flashcards
The function of the respiratory system is?
The function is to transport air to the lungs & facilitates the diffusion of O2 into the the bloodstream. It recieves waste from the blood & exhales it (carbon dioxide)
What does the upper airway provide?
provides a passage for air to enter & leave the body. It warms, humitifies and cleans the air & guides it into the lower airway. It consists of the nasal cavitiy the pharnx & larynx.
The Lower airway is part of?…
is part of the respiratory tract. -they are branching, hollow passageways that conduct air to & from the aveoli. -All passageways in the lower tract can alter in diameter, this allows them to regulate the speed at which the air flows through.
The lungs are where what take place?
The lungs are where the gas exchange takes
place.
Muscles provide a physical force for what?
Muscles provide a physical force needed for breathing
The Diaphram is needed to push….?
Diaphram is needed to help push the air in and out of your lungs when you exhale
Muscles located b/w the ribs help to?
help to stabalize the ribcage & helps lift and lower the ribs.
Parts of the Upper respiratory are and do what?
mouth,nose,and nasal cavity. They clean, warm, and moisten air.
Pharynx is?
(throat) divides into 2 parts: trachea-wind pipe and esophagus (food pipe). There is a esmall flap of cartilage. Called the Epiglottis, this prevents the food from going in the trachea.
Larnyx is?
(voice box) this is where sound is generated. -helps protect the trachea by producing a strong cough reflex.
What does the trachea do and how big is it?
carries air to the lungs. It ranges from 20-25mm in diameter & is 10-16cm in length.
The inner membrane of the trachea is covered with?
tiny hairs called cilia, they catch particles of dust, that can be removed with coughing.
The trachea is surrounded by?
15-20 C-shaped rings of cartilage, they help protect & keep the trachea open. The trachea partically collapses to allow food to pass through the esophagus
Bronchi branches into?
branches into 2 tubes, 1 enters the rt lung & one enters the lt. The left bronchi is more narrow, longer & more horizontal than the rt.
Once inside the lung the bronchi splits into?
Several bronchioles.
How big are bronchioles and where do they lead?
less than one mm in diameter. Lead to aveoli
Alveoli are?
hollow cavities. have very thin walls that permit gas exchange. There are approx 3 million alveoli in an average adult lung.
The Lymphatic system is?
an extensive network of organs.
Lymph is??
a clear watery fluid that contains protein molecules, salts, glucose & urea