4.3, 17.1-2 histology of blood Flashcards
blood _ substances inside the body
transports
connective tissue is supplied richly with __
blood vessels
cartilage is vascular/avascular
avascular
hemopoietic stem cell
the connective tissue’s immature blood-cell forming type
fluid matrix
plasma
blood
fluid withing blood vessels
why is blood classified as connective tissue?
is develops from mesenchyme
consists of blood cells, surrounded by fluid matrix (blood plasma)
“fibers” of blood
soluble protein molecules that precipitate
forms visible fiberlike structures during blood clotting
blood carries:
-nutrients
-wastes
-respiratory gases
-other substances
arteries
carries blood out of the heart
capillaries
small branches off arteries that service all tissues of the body
veins
carries blood back to the heart
buffy coat
thin, whitish layer of blood present at the erythrocyte-plasma junction
-includes leukocytes and platelets
hematocrit
percentage of erythrocytes in a blood sample
-usually 45%
blood plasma
straw-colored, sticky fluid
-90% water
-contains over 100 dissolved solutes