fluids and respiratory system things Flashcards
what are fluids?
fluids are substances that have no defined form and that can flow in all directions.
if a surface is smaller does it have less or more pressure?
more.
does temperature affect pressure in a gas?
yes it does.
what are the nasal cavities?
two chambers in your nose.
what is the pharynx? and what else is it called?
it is part of both the respiratory and digestive system because both air and food passes through it. it is also called the throat
what is the larynx?
it is made mostly of cartilage, it connects the pharynx to the trachea.
what is the trachea?
it’s a tube that connects to the larynx and bronchi. it’s located in front of the esophagus. It’s made of rings of cartilage to keep it open at all times.
what is the bronchi?
the trachea splits into two bronchi, one going towards the right lung and one going towards the left.
what are bronchioles?
the bronchi progressively split into smaller tubes, the bronchioles.
do gases have a defined volume?
no they do not.
does an increase in volume mean a decrease in pressure?
yes.
can the volume of liquids be reduced?
no
what are liquids?
incompressable fluids because their volume cannot be reduced.
what happens to the alveoli when we inhale?
they fill up with air.
what is the formula for pressure?
p=f/a (p=pressure) (f=force) (a=area)
what is cellular respiration?
cellular respiration is a set of metabolic reactions and processes that take place in the cells of organisms to convert chemical energy from oxygen molecules
what is the main purpose of the respiratory system?
the respiratory system’s main job is to move fresh air into your body while removing waste gases.
what happens when we inhale (specifically)?
oxygen enters our system and diffuses into the blood. co2 diffuses from the blood stream into the lungs, to then be exhaled.
what is diffusion?
diffusion is the net movement of anything from a region of higher concentration to a region of lower concentration.
what are capilaries?
they are blood vessels that only have 1 row of cells so that they are thin enough so only 1 blood cell can go through at a time.