Blood Flashcards
(41 cards)
What is the composition of blood?
- Plasma
- Red Blood Cells (corpuscles)
- Whistle Blood Cells
- Platelets
What is plasma?
The liquid part of blood- pale, golden liquid
What is plasma’s composition?
55% of the blood- 90% water, 7% proteins, 3% dissolved materials
What are the main plasma proteins?
Antibodies and clotting proteins
What is the role of plasma?
To transport dissolved materials e.g heat, minerals
What is serum?
Serum is plasma from which the clotting proteins have been removed. It’s is sometimes used in injections to give someone resistance to disease
Where are red blood cells produced?
The marrow of bones (breast bone, ribs, vertebrae and long bones of arms and legs)
What are red blood corpuscles?
When RBCs are first made and have a nucleus
Do RBCs have a mitochondria?
No
What shape does an RBC membrane have?
Bioconcave shape
What is the purpose of the RBCs bioconcave shape?
To have a larger surface area to transport oxygen
Can RBCs repair themselves?
No
Where are dead RBCs broken down?
The spleen
Where is the iron from RBCs stored?
The liver
What are remaining dead RBCs used for?
RBCs and haemoglobin converted into bile pigments (bilirubin)
What is the role of RBCs?
To transport oxygen
What is a disorder associated with RBCs and haemoglobin?
Anaemia
Where are WBCs made?
Bone marrow
Are WBCs or RBCs larger?
WBCs
What is the role of WBCs?
To defend the body against infection and to fight infection
What is phagocytosis?
When the WBC engulfs the bacteria and digests it, now called a phagocyte
What are the two different types of WBCs?
Lymphocytes and monocytes
Where can lymphocytes mature and be stored?
The lymphatic system, (spleen, lymph nodes, tonsils and thymus gland)
What is the composition of a lymphocyte?
A large round nucleus with very little cytoplasm
