RESPIRATION AND BREATHING Flashcards
RESPIRATION
the process that release food from energy
EQUATION FOR RESPIRATION
glucose + oxygen —> carbon dioxide + water + energy
AEROBIC RESPIRATION
needs oxygen to release energy
ANAEROBIC RESPIRATION
does not need oxygen to realease energy
HOW DOES OXYGEN GET TO OUR CELLS?
oxygen is carried by haemoglobin in the red blood cells of the body
WHY DO WE INHALE THROUGH OUR NOSE?
we inhale through our nose because:
hairs and mucus trap dirt particles and bacteria in the nose.
air is warmed and moistened as it passes though the nose,warm moist air helps oxygen to pass from the lungs into the bloodstream more easily.
WHAT IS THE TRACHEA?
the trachea or windpipe carries air to and from the lungs,it is made of c-shaped rings of rigid cartilage to prevent it from collapsing.
BRONCHUS AND BRONCHIOLES?
WE HAVE 2 BRONCHI.
EACH BRONCHUS CARRIES AIR BETWEEN the trachea and a lung.the two bronchi subdivide many times to form a tiny tube called bronchioles.
bronchioles carry air to and from the air sacks or alveoli
WHAT ARE ALVEOLUS?
each ling contains millie’s of tiny air sacs called alveoli.
the function of each alveolus is gas exchange
WHAT IS A DIAPHRAGM
the diaphragm is a sheet of muscle that forms the base of the chest.
along with the ribs and intercostal muscles muscles in between the ribs the diaphragm causes air to move into or out of the lungs.
WHAT IS GASEOUS OR GAS EXCHANGE?
oxygen passes from the air in the alveolus into the blood vessels.
at the same time carbon dioxide and water pass from the blood vessels into each alveolus.
the gases pass in each direction by a process called diffusion.
as an adaption of diffusion each alveolus has a very thin lining,is moist and is surrounded by many tiny blood vessels called capillaries.
