Blood is made up of (a)  

Plasma:

About 92% water, 7% protein + ____ + materials such as ___, ____, glucose, metabolic waste, hormone

Changes in the composition of plasma will initiate responses by one or more organs in the body to restore ______

(a)  

Red Blood Cells/ Erythrocytes:

Picks up O2 from the ____ and transports it around the body. Takes ____ back to the lungs.

Old/damaged RBCs are broken down in the ____ and _____ . New RBCs are produced in the ___ _______.

(a)  

RBC production is controlled by the hormone _______ (released by kidneys in response to low oxygen levels). This _____ feedback loop ensures that the number of RBCs in the body remains relatively constant over time.

(a)  

White Blood Cells/ Leukocytes:

Primarily involved in _____ ______ as it recognise and ‘neutralise’ foreign bodies such as bacteria and viruses.

Larger than _______, and have a nucleus and ______

(a)  

Platelets/ thrombocytes:

Tiny fragments of _____ and is vital for the process of _____!

(a)