Respiratory System

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Nasal Cavity
warms and filters air
epiglottis
prevents food from entering air passages
pharynx
permits passage of air and food
larynx
produces speech
trachea
covered with cilia to filter air
bronchi
convey air to lungs
bronchioles
small tubes leading to the aveoli
alveoli
exchange gas between lungs and blood
hemoglobin
pigment of blood can carrry up to 4 oxygen molecules ,
oxyhemoglobin
hemoglobin, a respiratory pigment, combines with oxygen to form this
Bohr Shift
when the pH drops, hemoglobin drops off its oxygen
Circulatory system
transport substances- O2 and food, regulation- moves hormones to regulate homeostasis, protection-blood clotting and the immune system
plasma
liquid, contains clotting factors, hormones, antibodies, nutrients, wastes
red blood cells
(erythrocytes) carry hemoglobin and oxygen; no nucleus; live 120 days
white blood cells
(leukocytes) fight infection; formed in bone marrow; 5 types
platelets
(thrombocytes) cell fragments that clot blood
arteries
carry blood away from the heart under enormous pressure
veins
carry blood back to the heart
capillaries
allow diffusion of nutrients and wastes between cells
lymph
fluid that leaks form tissues to blood to lymph nodes-germs and such are removed
atria
receive blood from body cells
ventricles
pump blood out of the heart
SA NODE
pacemaker of the heart; starts heartbeat. No new beat until muscle relaxes
systolic number
measure of the pressure when blood is sent out of the heart
diastolic number
measure of pressure when heart relaxes
coronary
circulation from the heart
renal
circulation from the kidney
hepatic
circulation from the liver
acetylcholine
hormone that speeds up the heartbeat
noreptinephrine
hormone that slows up the heartbeat (in epipens)