The Circulatory System

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Presentation transcript:

The Circulatory System Year 10 AADP

Things we are going to cover Blood Blood Vessels (Vascular System) The Pulmonary (Lungs) System The Systemic (heart) Circuit The Heart

Blood Blood is made up of 2 sections. A solid section and a liquid section.

Blood – Solid section Solid section makes up 45% of all blood volume. Consists of: Red Blood cells White Blood cells Platelets

Blood - Liquid section 55% of blood volume is liquid. The liquid is called plasma.

Components of blood – Red blood cells Contains iron. Give the red colour to blood. Are produced in the bone marrow (pelvis, sternum, skull) Have a life cycle of 120 days.

Components of blood – white blood cells Produced in the bone marrow. Move to areas of infection or disease and attempt to wipe out invading infections. Puss is the accumulation of dead white blood cells.

Components of blood - Plasma Plasma is a yellow solution containing: Water, nutrients, hormones, and waste products.

Functions of blood There are 2 main functions of blood. Transport Body normality

Function - transport The blood transports nutrients from the digestive system and lungs to the tissues. Also transports waste products to the lungs and urinary systems.

Function – body normality Blood serves 2 main purposes for body normality. Body Temperature Protection (clotting, foreign bodies)

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