Respiratory System Flashcards
Our ________ is responsible for bringing air into the body, from which we can get oxygen.
respiratory system
It also moves air back out of the body-the exhaled air contains more of our waste gas,
carbon dioxide
Air enters the body through the _________, where it is filtered and warmed.
nose and mouth
a large, air-filled space above and behind the nose in the middle of the face.
Nasal Cavity
The nasal septum divides the cavity into two cavities, also known as
fossae
Like your nose, your mouth brings air into your lungs. Since your mouth is larger than your nose, it brings in more air
Oral Cavity
it supports your respiratory and digestive systems
Pharynx
The primary function of the this in humans and other vertebrates is to protect the lower respiratory tract from aspirating food into the trachea while breathing
larynx
Air then passes through the ______ and the ______. These structures are held open by rings of cartilage.
trachea
bronchi
to allow passage of inspired and expired air into and out of the lung. This is a midline structure and lies just anterior the esophagus.
Trachea
carry air to and from your lungs. The ______ also help moisturize the air you breathe and screen out foreign particles
Primary Bronchi
Each bronchus then branches many times into ______, terminating at tiny air-filled sacs called _______
bronchioles
alveoli
carry air to small sacs in your lungs called alveoli
Bronchiole
perform your body’s gas exchange
Alveoli
The process involved in the exchange of these gasses is called .
diffusion
