Intro !!

Question 1

what is blood?

Answer 1

-a specialized fluid (technically a tissue) composed of cells suspended in a liquid

-this liquid is called plasma

Question 2

3 types of blood?

Answer 2

RBC
WBC
Platelets

Question 3

Why do we need so many different cell types?

Answer 3

-fight infection
-transport oxygen
-prevent bleeding

Question 4

name for production of blood?

Answer 4

haematopoiesis

Question 5

where do blood cells come from?

Answer 5

-derived from a small pool of pluripotent stem cells capable of making all the different types of blood cells

Question 6

where are sites of haematopoiesis (production of blood cells) in embryo?

Answer 6

-yolk sac then liver than marrow
-3rd to 7th month in spleen

Question 7

site of haematopoiesis (production of blood cells) at birth?

Answer 7

-mostly bone marrow, liver and spleen when needed

Question 8

site of haematopoiesis (production of blood cells) from birth to maturity?

Answer 8

number of actives sits in bone marrow decreases but retain ability for haematopoiesis

Question 9

site of haematopoiesis (production of blood cells) in an adult?

Answer 9

As an adult not all bones contain bone marrow
-Haematopoiesis restricted to axial skeletol (skull, rib sternum, pelvis, proximal ends of femur)

Question 10

what are parts of the axial skeleton?

Answer 10

skull, rib sternum, pelvis, proximal ends of femur