Unit 1: Surfaces for exchange and the lungs Flashcards
What is the Bronchi?
Airways in the lungs that lead from the trachea to the bronchioles.
What are the Bronchioles?
Airways in the lungs that lead from the bronchi to the alveoli.
What is cartilage?
A flexible, slightly elastic connective tissue.
What is the cartilage ring?
A flexible ring of cartilage that holds the airways open.
What is collagen?
A structural fibrous protein found in connective tissues, bones, skin and cartilage. It accounts for 30% of body protein.
What does constrict mean?
To make narrow.
What is the diaphragm?
A sheet of muscular and fibrous tissue separating the chest cavity from the abdominal cavity.
What are elastic fibres?
Long fibres of elastin protein elastin that have the ability to stretch and recoil.
What is the Epidermis?
Outer layers of cells of a multicellular organism.
What is Epithelium?
A tissue that covers the outside of a structure.
What is an exchange surface?
A specialised area adapted to make it easier for molecules to cross from one side of the surface to the other.
What are the intercostal muscles?
Muscles between the ribs, responsible for moving the rib cage during breathing.
What is mucus?
A slimy substance secreted by goblet cells in animal epithelial tissues. it is used ton protect and/or lubricate the surface on to which it is secreted.
What is pulmonary circulation?
The circulation of the blood through the lungs.
What is the smooth muscle?
A type of muscle found mostly in certain internal organs.
