circulatory system Flashcards
not overly important but what does the circulatory stem do
- body internal highway system
- components
- provides links between body systems
nutrients in, waste out
3 main components
heart, blood vessels, and blood
what are the 3 main things blood is good for transporting
- oxygen to cells + nutrients
- carbon dioxide + waste out
- hormones + chemical to cells
what does blood maintain 2
- pH , water, ions
- internal body temp
when you scrape yur knee what does blood do
clot
if your sick what does blood do
fight disease or infections
how much of blood is plasma
55%
what is it mostl made of 91%
water
what does it dissolve 2
- nutrients (glucose)
- ions
- hormones
- clotting factors
what is RBC called fancy
erythrocytes
how are RBC shaped
biconcave discs
what is special about RBC
no nucleus
why are RBC concave
higher surface area
why do RBC not have nuclues
flexible, more heamogoblins hehehe
have RBC ever had a nucleus
gets rid of it as matures
what in RBC atracts o2
goblins near alveoli
why is blood red
oxygenated HB
how long RBC live
120 days
where do weirdos in RBC go
destroyed by spleen in phagocytosis
what does the liver do to nutriens in weird stuff
recycle
what are WBC called
leucocytes
compared to RBC WBC are..
larger less common
out of the 5 types what are the imporatant WBC
- neutrophills
- lymphocytes
what do neutrophills
bacteria
what do lymphocytes
virus
what is pus
The process where these white blood cells surround, engulf, and destroy foreign substances is called phagocytosis, and the cells are collectively referred to as phagocytes. Phagocytes eventually die. Pus is formed from a collection of dead tissue, dead bacteria, and live and dead phagocytes
what structure do neutrophills have
granules
what are platelets called
thrombocytes
does plates have nuclues
no
where are p
bone marrow, spleen for emergency
how long p live
7 days
what does p do
blood clottings
what are p
fragments of Platelets are pieces of very large cells in the bone marrow called megakaryocytes
