Ch 16 - Blood Flashcards
Functions of blood
transport, regulation, protection
Blood tissue type
only fluid tissue; connective tissue
____ is a nonliving fluid called ___
matrix; plasma
Formed elements
erythrocytes (RBCs); leukocytes (WBCs); platelets
spun tube of blood layers (bottom to top)
erythrocytes, WBCs, plasma
hematocrit
percent of blood volume that is RBCs
Buffy coat
thin, whitish layer between RBCs and plasma layers
Albumin
plasma protein; carrier of other molecules, blood buffer, contributes to plasma osmotic pressure
Which formed element has the only complete cells
WBCs
RBCs have no….
nuclei or other organelles
What provides erythrocytes with the flexibility to change shape?
the plasma membrane protein spectrin
Erythrocyte shape
biconcave disc
RBCs have no mitochondria bc..
ATP production is anaerobic, so they don’t consume O2 they transport
hemoglobin structure
four poly peptide chains - 2 alpha and 2 beta; four heme groups
Function of Erythrocytes
O2 loading in lungs; O2 unloading in tissues; CO2 loading in tissues