Blood as a Tissue - Grade 11 Life Sciences

These flashcards cover key concepts related to blood as a tissue, its components, functions, and the role of different blood cells.

What is blood?

A vital fluid that transports nutrients to body organs and carries away waste materials.

What percentage of blood is made up of plasma?

55%.

What is the primary function of red blood cells (erythrocytes)?

To carry oxygen from the lungs to all parts of the body.

What are the two main types of white blood cells?

Granulocytes and agranulocytes.

What function do platelets serve in the blood?

They help in the formation of blood clots.

What is plasma primarily composed of?

91% water, 7% proteins, and 2% other solutes.

What is the lifespan of red blood cells?

Approximately 120 days.

What is phagocytosis?

The process by which phagocytes destroy bacteria and foreign particles by engulfing and digesting them.

What proteins are important for blood plasma?

Fibrinogen, albumen, and antibodies.

How do white blood cells defend the body?

By attacking pathogens and producing antibodies or antitoxins.