Internal Organs of Human Body
Human body is like machine. It is uniquely designed, as it consists of various biological systems, that are regulated by internal organs. Read more, to get detailed information on internal organs of human body.
Human body can be divided into head, trunk, hands, and legs. Head and the trunk plays a major role in protecting some crucial internal organs. They consist of many tissues, cells and connective tissues, that help in regulating various biological systems.
Some of the major organ systems are skeletal system, circulatory system, nervous system, digestive system, immune system, respiratory system, urinary system, reproductive system, lymphatic system, and endocrine system, etc., which are overlapping and interdependent.
List of Internal Organs of Human Body
Brain: The human brain is protected by the skull and it is enclosed in the cranium keeping it very safe, since it is the center of the nervous system. The structure of the human brain can be compared with other mammals, but it is three times bigger and more advanced than other mammals. It houses our cherished memories, future plans, and keeps us alert in the present. The brain helps the body to activate muscles and it secretes chemicals that allow to respond to the external stimuli. No other animals have the ability to 'think' and weigh things logically. But, the human brain performs some executive functions, such as, self control, planning, reasoning, and abstract thinking, that makes human beings the most intelligent species on entire earth.
Heart: Primary function of the heart is to provide de-oxygenated blood to all the body organs through blood vessels by rhythmic contractions, also known as heart beats. The heart is made of involuntary cardiac muscles, and this is the reason why the heart continues beating even when we are asleep. The heart weighs 250 to 350 grams and is almost the size of the fist. It is located in the left side of the thorax and is protected by the rib cage. The pericardium, a double-walled sac, that encloses heart, not only protects the heart but anchors it's surrounding structure and prevents heart from overfilling with blood.
Lungs: Human body consists of two lungs and they lead the respiratory system functions. Lungs work very closely with the heart. Lungs provide the pure atmospheric oxygen to the blood that's in turn circulated by the heart to various body organs. The lungs also remove carbon dioxide and other impurities from the blood veins. The heart is nearly flanked by lungs, so it also acts as a soft shock absorbent for the heart and also maintains the pH level of the blood.
Stomach: It is the key player in the digestive system. Stomach is a pear shaped organ located in the abdominal cavity between esophagus and intestines. The stomach can change it's size and shape, depending on the position of the body and the amount of food inside, since it is muscular and elastic in nature. Stomach is the large and multi chambered organ, that hosts special bacteria which produce enzymes necessary for digestion. It secrets gastric acid, hydrochloric acid and maintains the pH level, that helps in smooth digestion of edible foods.
Intestine: Intestine is the digestive tract situated between stomach and the anus. It can be divided as, large and short intestine. The small intestine is narrow and 6 to 7 meters long, whereas, the large intestine is only 1.5 meters long but is wide in diameters. The extensive part of digestion occurs in small intestine where most of the essential nutrients are absorbed. The large intestine function in digestion is pivotal as, it absorbs water and is responsible for the excretion of the waste material. The intestinal muscles perform rhythmic contractions called peristalsis to move the undigested food as well as absorbed food along the intestinal tract.
Liver: It is located on the right side of the abdominal cavity. Some of the important functions of the liver include, filtering harmful substances from the blood, maintaining cholesterol and glucose level in blood, secreting certain amino acids, storing vitamins and minerals, secreting chemicals that break down the fats, and converting glucose to glycogen, etc.
Apart from these there are various internal organs, such as kidneys, bladder, pancreas, thymus, eyes, pituitary gland, hypothalamus, spleen, appendix, adrenals, etc., including different reproductive organs in men and women.
Study of internal organs of human body, which is a part of human anatomy, is essential to any health discipline. Dysfunction of the internal organs can be fatal, and hence it is important to understand their functions. This will help you understand your body well to keep it fit and healthy.
Some of the major organ systems are skeletal system, circulatory system, nervous system, digestive system, immune system, respiratory system, urinary system, reproductive system, lymphatic system, and endocrine system, etc., which are overlapping and interdependent.
List of Internal Organs of Human Body
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Brain: The human brain is protected by the skull and it is enclosed in the cranium keeping it very safe, since it is the center of the nervous system. The structure of the human brain can be compared with other mammals, but it is three times bigger and more advanced than other mammals. It houses our cherished memories, future plans, and keeps us alert in the present. The brain helps the body to activate muscles and it secretes chemicals that allow to respond to the external stimuli. No other animals have the ability to 'think' and weigh things logically. But, the human brain performs some executive functions, such as, self control, planning, reasoning, and abstract thinking, that makes human beings the most intelligent species on entire earth.
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Heart: Primary function of the heart is to provide de-oxygenated blood to all the body organs through blood vessels by rhythmic contractions, also known as heart beats. The heart is made of involuntary cardiac muscles, and this is the reason why the heart continues beating even when we are asleep. The heart weighs 250 to 350 grams and is almost the size of the fist. It is located in the left side of the thorax and is protected by the rib cage. The pericardium, a double-walled sac, that encloses heart, not only protects the heart but anchors it's surrounding structure and prevents heart from overfilling with blood.
Lungs: Human body consists of two lungs and they lead the respiratory system functions. Lungs work very closely with the heart. Lungs provide the pure atmospheric oxygen to the blood that's in turn circulated by the heart to various body organs. The lungs also remove carbon dioxide and other impurities from the blood veins. The heart is nearly flanked by lungs, so it also acts as a soft shock absorbent for the heart and also maintains the pH level of the blood.
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Stomach: It is the key player in the digestive system. Stomach is a pear shaped organ located in the abdominal cavity between esophagus and intestines. The stomach can change it's size and shape, depending on the position of the body and the amount of food inside, since it is muscular and elastic in nature. Stomach is the large and multi chambered organ, that hosts special bacteria which produce enzymes necessary for digestion. It secrets gastric acid, hydrochloric acid and maintains the pH level, that helps in smooth digestion of edible foods.
Intestine: Intestine is the digestive tract situated between stomach and the anus. It can be divided as, large and short intestine. The small intestine is narrow and 6 to 7 meters long, whereas, the large intestine is only 1.5 meters long but is wide in diameters. The extensive part of digestion occurs in small intestine where most of the essential nutrients are absorbed. The large intestine function in digestion is pivotal as, it absorbs water and is responsible for the excretion of the waste material. The intestinal muscles perform rhythmic contractions called peristalsis to move the undigested food as well as absorbed food along the intestinal tract.
Liver: It is located on the right side of the abdominal cavity. Some of the important functions of the liver include, filtering harmful substances from the blood, maintaining cholesterol and glucose level in blood, secreting certain amino acids, storing vitamins and minerals, secreting chemicals that break down the fats, and converting glucose to glycogen, etc.
Apart from these there are various internal organs, such as kidneys, bladder, pancreas, thymus, eyes, pituitary gland, hypothalamus, spleen, appendix, adrenals, etc., including different reproductive organs in men and women.
Study of internal organs of human body, which is a part of human anatomy, is essential to any health discipline. Dysfunction of the internal organs can be fatal, and hence it is important to understand their functions. This will help you understand your body well to keep it fit and healthy.
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