BIOLOGY 1 — CIRCULATORY SYSTEM

Circulatory system

Is essential for transporting blood, nutrients, oxygen and waste products of the body.

Veins

It returns deoxygenated blood, They have valves to prevent back flow.

Right chamber

Contains deoxygenated blood coming from different parts throughout the body.

Left chamber

Receives oxygenated blood from the lungs.

Blood Vessels

Carries the blood throughout the body.

Capillaries

Are the smallest blood vessels throughout the body.

Arteries

Carry oxygenated blood away from the cells, tissues and organs of the body.

Blood

Carries the materials throughout the body.

White blood cells

Are cells that defend the body when pathogens intrude, They're also referred as ‘Leukocytes’.

Platelets

They use fibrin, and are cells that minimize bleeding, They are referred as ‘Thrombocytes’

Red blood cells

Are cells that carry oxygen, with hemoglobin (A protein) and are referred as ‘Erythocytes’

Systemic circulation

Movement of blood from the heart to the rest of the body, excluding lungs.

Pulmonary circulation

Movement of blood from the heart to the lungs & back to the heart.