Lecture 8: Blood Flashcards Preview

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Flashcards in Lecture 8: Blood Deck (11):
1

What is blood comprised of?

Different cell types suspended in a liquid matrix called plasma

2

What is plasma comprised of?

Water, ions, buffers, proteins and many other components

3

Name the types of cells in regards to blood

RBCs, white blood cells and platelets

4

What are the roles of the different kinds of blood cells?

RBCs: Transport oxygen, WBCs: Immunity and Platelets: Clotting factors

5

What are the other names for red and white blood cells?

RBCs: Erythrocytes WBCs: Leucocytes

6

Describe the process of oxygen being transported around the body in terms of blood

O2 binds to the protein haemoglobin. It also binds to dissolved gas causing capillaries to relax and dilate, aiding delivery to the tissues.

7

Name the 5 major white blood cell types

Mono/lympho-cytes and Neutro/Baso/Eosino-phils

8

How do white blood cells fight infection?

Phagocytosis

9

Describe the process of B lymphocytes

Bind, clonal expansion to produce daughter and plasma cells. Plasma: secrete antibodies that attack the pathogen

10

Where do RBCs, leukocytes and platelets come from?

They originate from a single population of pluripotent stem cells in the red bone marrow

11

Describe blood clotting

Release of clotting factors from activated platelets, formation of thrombin from prothrombin, convert fibrogen to fibrin which forms thread like clots