structure of blood Flashcards
what is blood composed of
plasma (liquid part) and formed elements (non - liquid part)
what makes up 55% of the blood volume
plasma
what makes up 45% of the blood volume and what does it include
formed elements consisting of erythrocytes (RBS), leucocytes (WBC), and thrombocytes (Platelets)
what is plasma made up of
mixture of water and dissolved substances
what is the function of the plasma
transport nutrients, hormones, proteins, & gasses throughout the body
what are thrombocytes also known as
platelets
where are platelets made and what do they do
platelets are small cell fragments that are made in bone marrow and last around 1-10 days, and their function is to clot blood
what are erythrocytes (RBC), where are they formed and what is their function
most abundant cell in the blood which don’t contain a nucleus, and is formed in bone marrow transports oxygen from lungs to cells in the body
what is the shape of (RBC) and how long does it live
it is a biconcave shape which is flattened in the middle, and it lives for 120 days
what is the protein in (RBC)
Haemoglobin which binds to O2 to become oxyhemoglobin
what are leucocytes (WBC) and what do they do
white blood cells that help to fight infection in the body and make up 1% of the blood
what are the different kinds of leucocytes
Neutrophils, Monocyte, Lymphocytes, Basophil, Eosinophil
it is a leucocytes
What are neutrophils and what do they do
they use enzymes to digest pathogens
it is a leucocytes
what are monocytes and what do they do
engulf and destroy pathogens and waste cells by phagocytosis to prevent infection
is it a leucocyte
What are lymphocytes and what do they do
involved in imune response and use cell mediated immunityT lymphocytes and anibody mediated immunity B lymphocytes
it is a leucocyte
What is basophil and what does it do
responsible for allergic reactions, producing histamine and heparin to defend the body against bacteria
What is eosimophil and what does it do
major roll in killing paracytes by releasing toxic proteins
