Blood clotting

Revision cards for SNAB topic one, under 1.1what is cardiovascular disease?

HideShow resource information

Blood Clotting

 Astheresclerosis will
-Increase the chance of blood clotting
and
-cause further blockage in the arteries

1 of 6

Blood Clotting

When artery walls are damaged & a plaque develops

- the blood flows more slowly

-blood platlets touching the artery wall stick together forming a
  PLATELET PLUG

2 of 6

Blood Clotting

The damaged artery wall and the platelets together release:

THROMBOPLASTIN

3 of 6

Blood Clotting

THROMBOPLASTIN

-In the presence of calcium ions and Vitamin K in the blood plasma, thromboplastic:
starts a cascade of CHEMICAL CONVERSIONS

1st, causes the conversion of:
PROTHOMBRIN to THROMBRIN(enzyme)

2nd Converts

SOLUBLE FIBRINOGEN to  INSOLUBLE FIBRIN STRANDS

 

 

4 of 6

Blood Clotting

The Platlet Plug & mesh of fibrin strands:

-Trap red & white blood cells

-Forming a clot

- blocking an artery (in addition to any plaques) 

5 of 6

blood clotting

Clotting process is essential at a wound

(when damaged  blood vessel set up the same response to form a clot)

As the clot dries it forms a scab to:

-Prevent excessive blood loss

-invasion of bacteria

(the tissue heals beneath)

BLOOD CLOTTING INSIDE THE BODY AS ARTERIES ARE DAMAGED IS DANGEROUS

6 of 6

Comments

No comments have yet been made

Similar Biology resources:

See all Biology resources »See all Lifestyle health and risk (cardiovascular disease/blood clotting) resources »