The human blood

Human blood consists of blood cells and plasma.

Biology

Keywords

blood, blood flow, red blood cell, white blood cell, platelet, haemoglobin, vascular system, blood vessel, blood plasma, blood cell, body fluid, phagocytosis, connective tissue, immune defense, lymphocyte, monocyte, granulocyte, coagulation, human, biology

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Circulatory system

Systemic circulation carries oxygenated blood from the heart to the body, while pulmonary circulation carries oxygenated blood from the lungs to the heart.

Respiratory system

The respiratory system is responsible for the intake of oxygen and the release of carbon dioxide.

The heart

The heart is the central pump of the cardiovascular system beating several billion times over our lifetime.

Heart attack

The cause of a heart attack is the blockage of a coronary artery. It is one the most common causes of death.

Lymphatic system

Lymph vessels carry lymph to the blood vessels, while lymph nodes are integral parts of the immune system.

Blood vessels

The three main types of blood vessels in the human body are the arteries, the veins, and the capillaries.

Connective tissues

Connective tissues include loose and dense connective tissues, adipose tissue, blood, tendon and bone tissue.

Deep vein thrombosis and pulmonary embolism

A blood clot that forms in the deep veins of the lower limbs can cause a fatal pulmonary embolism if they enter the lungs.

Muscle tissues

The three types of muscle found in the human body are the smooth, the striated and the cardiac muscle.

The electrical conduction system of the heart

The heart generates the electrical impulses necessary for its own operation. The graphic representation of the electrical activity of the heart is the...

The structure of proteins

The structure and arrangement of polypeptide chains affects the spatial structure of proteins.

Oxygen (O₂) (intermediate)

A colourless, odourless gas, an important component of the atmosphere, indispensable to sustain terrestrial life.

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