respiratory system; definitions Flashcards
aerobic
relating to, involving, or requiring free oxygen
cellular respiration
the use of oxygen to produce energy in body
turbinates? what do they do?
thin bones that are suspended from the nasal chambers.
1) its thin membrane secretes moisture in air
2) its epithelial lining is supplied with capillaries to warm and
increase humidity in air
respiratory system function?
supply oxygen to all the parts of your body.
larynx?
house of the vocal cords
trachea?
a flexible tube that is supported by semicircular cartilage ring/ known as windpipe
alveoli?
a grape-like cluster of tiny sacs that each bronchiole end up with.
How thick are the cell walls of the alveoli? Why?
One-cell thick, so gas exchange/diffusion to take place
What prevents the trachea from collapsing?
the semicircular cartilage rings
Pleura?
layers of tissue that is a flexible membrane that envelops the lungs while allowing them to expand and contracting during inhalation and expiration
What is the respiratory pigment in humans? location?
hemoglobin, red blood cells
What is the role of the diaphragm in breathing?
diaphragm is a thoracic cavity that helps move the lungs so it can expand and contract when we breath
asthma
severe allergic reaction that causes the bronchioles to suddenly contract
bronchitis
bronchial tubes become swollen
emphysema + cause
lungs loose elasticity – caused by smoking
pneumonia
when alveoli fill with fluid
lung cancer + cause
tumors form on the lungs – caused by smoking
breathing; inhalation
ribs are pulled up and down while diaphragm is pulled downwards
pressure in chest is reduced = forces air down passageways -> lungs =
forced to expand
breathing; exhalation
diaphragm and rib muscles relax = ribs drop and chest cavity becomes smaller
pressure becomes greater= squeezing air out of lungs
