Cardiovascular System Flashcards
What are the functions of the cardiovascular system?
Transport O2
Transport Metabolites
DIstribution of heat, hormones and anitbodies
Defence against diseases
How much of blood is made of cells?
45%
How much of blood is made up of plasma?
55%
How much of plasma is liquid water?
90%
What colour is plasma?
Pale Yellow
What does plasma transport?
Urea
Hormones
CO2
What are RBC also known as?
Erythrocytes
How much of RBC in blood?
High number of 5 million per mm3 of blood
What does RBC contain?
Haemoglobin which contains iron
What shape is a RBC?
Biconcave disc
How does the shape of RBC help with its function?
Efficient diffusion as large surface area
How does RBC have more room for haemoglobin?
No nucleus
How does the RBC size help it adapt to its function?
Small in size so can squeeze through small capillaries
What are the two types of phagocytes?
Monocyte
Polymorph
Describe a monocyte?
Large bean shaped nucleus
Regular
Describe a polymorph?
Lobed nucleus with granular cytoplasm
Irregular
What do phagocytes do?
Engulf and giest bacteria with enzymes
Describe a lymphocyte?
Large round nucleus
Little to no granular cytoplasm
Response to antigens
What is the lymphocytes size compared to phagocyte?
Much smaller
How many WBC compared to RBC?
Less than RBC
Other name for platelets?
Thrombocytes
Where is platelets produced from?
Bone marrow
