Breathing/Respirotary System Flashcards
What are the parts in the respiratory system
- Nostrils
2.Nasal passage - Mouth
- Pharynx
- Larynx
- Trachea
- Diaphragm
- Bronchi
- Alveoli
- Lungs
What does the nose, nasal passage and mouth do?
Air goes into us through our nose and passes by our nasal passage, which warms the air coming in and has mucus which acts as a filter to filter out dust or anything else you breathe in.
Our mouth is our second way to breathe if our nasal passage ever gets blocked/inflamed when we are sick.
What is our larynx?
- what does it do
Our larynx is our voice box, it is made of cartilage and contain vocal cords. When we talk the vocal cords are stretched across and when air passes through they start vibrating. When we aren’t talking (resting) our vocal cords are put to the side.
What is the trachea?
- what does it do
Our trachea are rings of cartilage (they’re soft). They help protect our vocals from collapsing whenever we lie down.
What is our bronchi?
- what does it do and how does it help in our system?
- bronchi
- bronchioles
Bronchi are branches of our trachea which divides or branches into smaller finer tubes which are now called bronchioles that involve into alveoli
——“ioles” mean smaller versions
What is the pharynx?
- what does it do?
- epligottis
- glottis
- larynx
The pharynx is the back of our throat and the passage way for air to actually enter our respiratory system.
Our epliglottis is a flap that closes over the opening or known as our glottis of the trachea when a person is swallowing. This stops food from entering our trachea and our respiratory system.
Our larynx is just underneath and its our voice box.
What is bronchi?
- what are bronchioles
Our bronchi are two smaller air passageways entering our left and right lung, that branched from the trachea. Then they branch into smaller and finer tubes called bronchioles. These smaller tubes deliver air to the alveoli.
What is the pleural membrane?
A thin double layered membrane surrounding the lungs. The other layer attaches to the inside of the chest wall. The inner layer attaches to lung. Fluid is filled in the space in between the two so that they stick together. The membrane allows for the lungs to stick to the thoracic cavity
What is the alveoli?
Each bronchiole ends with a cluster of tiny sacs which is the alveoli. The alveoli is where gas exchange happens and is one cell walk thick. The alveoli has capillaries.
Capillaries
Tiny blood vessels that are one cell wall thick connect the arteries with the veins.
What is the diaphragm ?
Its a sheet of muscle beneath the lungs that contracts and relaxes which increases or decreases the air pressure in the chest cavity.
What is the intercostal muscles?
The intercostal muscles are located un between the ribs which help contract or expand our ribs.
External Respiration
Change of carbon dioxide and oxygen in blood and the outside environment/air. CO2 will diffuse out of blood and into the air while O2 will enter the blood and bind to the hemoglobin in our body.
Internal Respiration
This happens between our blood and tissue cells. Oxygen is needed by our body tissue so they’ll move from our blood to body tissue.
How do we breathe? (Inhale)
The diaphragm and the intercostal muscles contract. The volume in our chest cavity will increase because because our rib cage is lifted and expanding. Pressure goes down and the air moves in and fills the lungs.
