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Structures. Muscles. See also. v. t. e. This article contains a list of organs in the human body. It is widely believed that there are 79 organs (this number goes up if you count each bone and muscle as an organ on their own, which is becoming a more common practice [1][2]); however, there is no universal standard definition of what constitutes ...
SystemSubsystemBody PartsOrgansMusculoskeletalMusculoskeletalMusculoskeletalMusculoskeletalMuscles- Nervous System
- Reproductive System
- Skin
- Muscular System
- Endocrine System
- Immune System
- Digestive System
- Circulatory System
The brain and spinal cord form the central nervous system, which works to process and send nerve signals, interpret information, and produce conscious thought. The nervous system helps the body regulate every functionTrusted Source, including every other organ system. The nervous system also includes an extensive network of neurons throughout the b...
The reproductive system includes the organs that enable a person to reproduce and experience sexual pleasure. In females, the reproductive system also supports the growth of a fetus. The male reproductive systemorgans include: 1. the testes 2. the epididymis 3. the vas deferens 4. the ejaculatory ducts 5. the prostate gland 6. the seminal vesicles ...
The skin is the body’s largest organ. It is part of the integumentary system, which includes skin, hair, nails, and fat. The integumentary system helps regulate body temperature, protect the body from dangerous pathogens, make vitamin Dfrom sunlight, and provide sensory input. The skin comprises three layersTrusted Source: 1. The epidermis:This is ...
The muscular system includes a vast network of muscles. There are three types of muscles: 1. Skeletal muscles:These are voluntary muscles, meaning a person can decide when to move them. The biceps and triceps are examples of skeletal muscles. 2. Cardiac muscles:These are involuntary muscles that help the heart pump blood. 3. Smooth muscles:These ar...
The endocrine system is a network of glands throughout the body. These glands release important chemicals called hormones, which help regulatethe function of virtually every organ and organ system in the body. The endocrine system includes several major glands, including: 1. the pancreas 2. the thyroid 3. the adrenal glands 4. the pituitary 5. the ...
The immune system helps the body prevent infections and fights them off when they do occur. Many organs play a role in the immune system. For example, the skin prevents dangerous pathogens from entering the body, and the salivary glands release saliva that can help break down some dangerous sources of infection in food. The lymphatic system plays a...
The digestive systemTrusted Sourceis the group of organs that digest food, as well as the various structures within that release substances to aid digestion and absorption. It includes: 1. the mouth 2. the esophagus 3. the salivary glands 4. the gallbladder 5. the liver 6. the pancreas 7. the stomach 8. the small and large intestines 9. the appendi...
The circulatory system includes the many blood vessels circulating throughout the body. It includes veins, arteries, capillaries, venules, and arterioles. The lymphatic system is also part of the circulatory system. It helps maintain the body’s fluid balance by collecting excess fluid and other particles from the blood. Lymph nodes are present with...
Sep 21, 2024 · The body includes nine major organ systems, each composed of various organs and tissues that work together as a functional unit. The chief constituents and prime functions of each system are: The integumentary system , composed of the skin and associated structures, protects the body from invasion by harmful microorganisms and chemicals; it also prevents water loss from the body.
- The Editors of Encyclopaedia Britannica
- Chemically, the human body consists mainly of water and organic compounds—i.e., lipids, proteins, carbohydrates, and nucleic acids. The human body...
- The four main types of tissue in the human body are epithelial, muscle, nerve, and connective.
- The nine major organ systems in the human body are the integumentary system, the musculoskeletal system, the respiratory system, the circulatory sy...
Sep 19, 2024 · There are 11 major organ systems in the human body: The circulatory (cardiovascular) system. The lymphatic system. The respiratory system. The integumentary system. The endocrine system. The gastrointestinal (digestive) system. The urinary (excretory) system. The musculoskeletal system.
- Skeletal system. The skeletal system is composed of bones and cartilages. There are two parts of the skeleton; axial and appendicular. The axial skeleton consists of the bones of the head and trunk.
- Muscular system. The muscular system consists of all the body muscles. There are three muscle types; smooth, cardiac and skeletal muscles. Smooth muscle is found within walls of blood vessels and hollow organs such as the stomach or intestines.
- Cardiovascular system. The cardiovascular system is comprised of the heart and the circulatory system of blood vessels. The heart is composed of four chambers; two atria and two ventricles.
- Respiratory system. The respiratory system consists of a series of organs; the nasal cavity, pharynx, larynx, trachea, bronchi, bronchioles and lungs (alveoli).
ANATOMY SYSTEMS. Skeletal System The skeletal system includes all of the bones and joints in the body. Muscular System The muscular system is responsible for the movement of the human body. Cardiovascular System The cardiovascular system consists of the heart, blood vessels, and the approximately 5 liters of blood that the blood vessels transport.
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The skeletal system is made from bones and joints. The femur bone in the thigh is the longest and strongest bone in the body. The smallest bones in the body are called the ossicles in the ear ...
