a

b

c

d

e

f

g

h

i

j

k

l

m

n

o

p

q

r

s

t

u

v

w

x

y

z

BLOOD

Definition

Animal tissue composed of circulatory cells in a liquid medium (plasma or serum). Blood usually contains respiratory pigments; its role is to carry oxygen, food-materials, excretory products, through the body. Blood is circulated by the muscular action of vessels or specialized organs (hearts).

English French Spanish Greek Norwegian Polish Hungarian Turkish Galician