Intro !! Flashcards

1
Q

what is blood?

A

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

-this liquid is called plasma

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2
Q

3 types of blood?

A

RBC
WBC
Platelets

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3
Q

Why do we need so many different cell types?

A

-fight infection
-transport oxygen
-prevent bleeding

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4
Q

name for production of blood?

A

haematopoiesis

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5
Q

where do blood cells come from?

A

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

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6
Q

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

A

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

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7
Q

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

A

-mostly bone marrow, liver and spleen when needed

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8
Q

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

A

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

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9
Q

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

A

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

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10
Q

what are parts of the axial skeleton?

A

skull, rib sternum, pelvis, proximal ends of femur

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