Circulative System Of Human
Circulatory system

The Circulatory system is an organ system that passes nutrients such as amino acids, electrolytes and lymph, gases, hormones, blood cells, etc. to and from cells in the body to help fight diseases, stabilize body temperature and pH, and to maintain homeostasis.

This system may be seen strictly as a blood distribution network, but some consider the circulatory system as composed of the cardiovascular system and the lymphatic system.

Two types of fluids move through the circulatory system: blood and lymph. Lymph is essentially recycled blood plasma after it has been filtered from the blood cells and returned to the lymphatic system.

The cardiovascular system distributes blood. The blood, heart, and blood vessels form the cardiovascular system.

The lymphatic system is a part of the circulatory system, comprising a network of conduits called lymphatic vessels that carry a clear fluid called lymph unidirectionally towards the heart. The lymph, lymph nodes, and lymph vessels form the lymphatic system.

The cardiovascular system and the lymphatic system collectively make up the circulatory system.

The essential components of the human cardiovascular system are the heart, blood, and blood vessels. It includes: the pulmonary circulation, a "loop" through the lungs where blood is oxygenated; and the systemic circulation, a "loop" through the rest of the body to provide oxygenated blood.
Essential components of the human cardiovascular system

The heart is a hollow muscle that pumps blood throughout the blood vessels by repeated, rhythmic contractions.

The heart is an amazing organ it beats about 2.5 billion times during an average lifetime of 66 years beating at 72 beats per minute.

It weighs approximately 250 to 300 grams in females and 300 to 350 grams in males.It is a muscle about the size of your fist.

The heart is located in the center of your chest slightly to the left. It's job is to pump your blood and keep the blood moving throughout your body.

Human Heart
The heart pumps oxygenated blood to the body and deoxygenated blood to the lungs.

The human heart has four chambers, two superior atria and two inferior ventricles. The atria are the receiving chambers and the ventricles are the discharging chambers.

The blood that is returned to the right atrium is deoxygenated poor in oxygen and passed into the right ventricle to be pumped through the pulmonary artery to the lungs for re-oxygenation and removal of carbon dioxide. The left atrium receives newly oxygenated blood from the lungs as well as the pulmonary vein which is passed into the strong left ventricle to be pumped through the aorta to the different organs of the body.

An average adult contains five to six quarts (roughly 4.7 to 5.7 liters) of blood, accounting for approximately 7% of their total body weight. Blood consists of plasma, red blood cells, white blood cells, and platelets.

Blood performs many important functions within the body including:

  • Supply of oxygen to tissues
  • Supply of nutrients such as glucose, amino acids, and fatty acids
  • Removal of waste such as carbon dioxide, urea, and lactic acid
  • Immunological functions, including circulation of white blood cells, and detection of foreign material by antibodies
  • Coagulation, which is one part of the body's self-repair mechanism
  • Messenger functions, including the transport of hormones and the signaling of tissue damage
  • Regulation of body pH
  • Regulation of core body temperature
  • Hydraulic functions
Blood Vessels

blood vessel

The blood vessels are the part of the circulatory system that transports blood throughout the body.

There are three major types of blood vessels:

  • The arteries, which carry the blood away from the heart.
  • The capillaries, which enable the actual exchange of water and chemicals between the blood and the tissues.
  • The veins, which carry blood from the capillaries back toward the heart.

There are various kinds of blood vessels:

  • Arteries
    • Aorta (the largest artery, carries blood out of the heart)
    • Branches of the aorta, such as the carotid artery, the subclavian artery, the celiac trunk, the mesenteric arteries, the renal artery and the iliac artery.
  • Arterioles
  • Capillaries (the smallest blood vessels)
  • Venules
  • Veins
    • Large collecting vessels, such as the subclavian vein, the jugular vein, the renal vein and the iliac vein.
    • Venae cavae (the 2 largest veins, carry blood into the heart)

Change in state of water
Water and it's states
Spheres of the earth
Nutrients & Deficiency Of Nutrients & It's Effect
Interesting Facts About Human Organs
Circulatory system
Digestive system
Endocannabinoids system
Endocrine system
Excretory system
Integumentary system
Immune system
Lymphatic system
Nervous system
Respiratory system
Musculoskeletal system
Vestibular system

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