blood Flashcards
Functions of Blood
Transport food, waste and hormones
Transport heat
Transport oxygen
Protect against disease
Composition of Blood
Red blood cells
White blood cells
Platelets
Plasma
describe plasma
Pale, golden liquid
what is plasma made up of
90% water, 7%
proteins and 3% dissolved
materials
what are the proteins in plasma made up of
antibodies and
clotting proteins
what is serum
a type of plasma
protein from which clotting
proteins have been
removed
Role of Plasma
Transport dissolved materials such as:
Glucose
Minerals
Vitamins
Amino acids
Carbon dioxide
Salts
Hormones
Heat
what are red blood cells also known as
red blood corpuscles
where are red blood cells produced
in bone marrow
what is the iron based compound in red blood cells called
haemoglobin
when do red blood cells become damaged
when they change shape to fit htrough narrow blood vessels
can red blood cells repair themselves, why?
no, they have no nucleus
where do red blood cells get broken down
liver
what do red blood cells not have
Mitochondria and a nucleus
what shape do red blood cells have
biconcave
why do red blood cells have that shape
to increase surface
area to exchange oxygen
Role of Red Blood Cells
To transport oxygen
In the lungs, haemoglobin combines with oxygen to form
oxyhaemoglobin
The red blood cells then carry oxygen around the body in the form of
oxyhaemoglobin. The oxygen is released to the body cells
what are white blood cells also known as
leucocytes
what shape do white blood cells have
they have no defined shape
how long do white blood cells live for
for a few days
where are white blood ells made
in bone marrow
what can white blood cells be classified as
lymphocytes or
monocytes
Role of white blood cells
Defend the body against infection and fight infections that are in the
body
Phagocytes surround bacteria and viruses and ‘eat’ them. This
process is called phagocytosis
Lymphocytes react to bacteria and viruses by producing antibodies.
where do lymphocytes mature
in the
lymphatic system
