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Mr B's | 11 ATAR | Human Bio | Respiratory System
Respiratory System Diagram
Terms in this set (15)
Filters, warms, and moistens air before it enters the lungs
Contains smell receptors
Resonating chamber for speech
Area directly behind the nasal cavity where air passes through.
Also used to pass food to the oesophagus-
A flap of tissue which closes the trachea during swallowing so that food is directed down the oesophagus rather then the trachea to the lungs
Also known as the voice box
Made from cartilage
Houses the vocal folds
These vocal folds have elastic ligaments which form the vocal cords.
Also called windpipe
About 12cm long, 2.5cm in diameter
Carries air to and from the lungs
Lined with a mucus membrane and cells with cilia which beat to move mucus, which has dust trapped in it upwards.
Trachea branches into two of these. They deliver air to and from each of the lungs.
Fine tubes with walls of smooth muscles. The smallest of these end in air sacs called alveoli
Tiny air sacs that are the site for gas exchange (O2 & CO2). Have very thin walls that ware lined with blood capillaries and allow for efficient exchange of oxygen and carbon dioxide.
This is the region of the body which is mostly occupied by the lungs
Bound by the ribcage on the sides, and the diaphragm underneath
Main organs of the respiratory system
Membrane surrounding the lungs
Lubricates the space between the pleura
Form the framework for the chest. They act to protect organs within the thoracic cavity
The muscles between each rib, move the rib cage upwards and outwards to increase the volume of the chest cavity, and therefore the lungs during inhalation
A muscle that separates the chest from the abdomen
Contracts- by flattening downwards. This increases the volume of the chest cavity and the lungs during inhalation.
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