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Nov 3, 2023 · The human body is a biological machine made of body systems; groups of organs that work together to produce and sustain life. Sometimes we get lost while studying about cells and molecules and can’t see the forest for the trees.
- Main Bones, Joints & Muscles
Key facts about the main bones, joints and muscles of the...
- Lymphatic System
The lymphatic system is a network of vessels and organs that...
- Ventricles of The Brain
There are two C-shaped cavities called the lateral...
- Peripheral Nerves
Peripheral nerves. The workhorse of the peripheral nervous...
- Musculoskeletal System
Musculoskeletal system The musculoskeletal system (locomotor...
- Endocrine System
Like the nervous system, the endocrine system acts as a...
- Integumentary System
Functions. The skin has a significant capacity for renewal...
- Main Bones, Joints & Muscles
- Skeletal System
- Muscular System
- Respiratory System
- Cardiovascular System
- Digestive System
- Nervous System
- Endocrine System
- Reproductive System
- Lymphatic System
- Urinary System
This system consists of the bonesof the body.These bones are made of bone cells and cartilage cells, which are hardened.This system comprises muscles that are responsible for the movements of the body.They are of three types skeletal, cardiac, and smooth muscles.The respiratory system helps in gaseous exchange.It helps absorb the atmospheric oxygenfrom the air and supply it to the body, and leaves out carbon dioxide from the body into the air.The respiratory system comprises the organs like the nose, larynx, bronchi, and lungs.The path is called as respiratory tract, and a diaphragm made of skeletal muscle separates it from the abdomen.The cardiovascular system circulates the blood in the body.It comprises blood, blood vessels like the arteries, veins, capillaries, and heart.The main functions of this system areMaintenance of uniform temperature,This system is meant to break down the food and absorb nutrients into the blood circulation.It consists of the mouth, teeth, esophagus, stomach, liver, pancreas, intestine, rectum, and anus.It is the only route through which the food can enter the body.The food is breakdown into smaller forms like carbohydrates, amino acids, and fatty acids for easy absorption into the body.This is called the master body system,as it controls all the other organ systems of the body.The nervous systemregulates whole-body physiology, functions, and movements.It has a brain, spinal cord, and somatic and autonomic nerves (sympathetic and parasympathetic nervous systems).It stimulates the release of hormones when needed so as to control other systems.This system acts as complementary to the nervous system.Endocrine glands like the pituitary, thyroid, parathyroid, pancreas, pineal, adrenal glands, and testes and ovariesare present in this system.The glands secrete their specific hormones, which act on different systems of the body and induce changes. These hormones are chemical messengers.For example, melatonin, a pineal gland hormone, induce sleep at night.This is the organ system that is responsible for the continuation of species.It helps in the formation of offspring to keep up further life.In males, it comprises organs like the testis, penis, and prostate glands.In females, it consists of the vagina, uterus, uterine tubes, ovaries, and also mammary glands(breast).This system provides a natural defense for the body. It kills bacteria, viruses, and other parasites residing in the body.It comprises fluid lymph, lymph nodes, lymph organs (like the spleen, tonsils, and thymus), white blood cells, and antibodies (humeral substances).The lymphatic systemis arranged parallel to the blood circulation and widely distributed in important points of the body.You can find it in the intestine, kidney, liver, brain, etc., where it traps the pathogens and prevents their further spread by destroying them.This system, as the name indicates, forms the urine as its end product.It is meant to remove the wastesand other toxins from the body.This system has a pair of kidneys, a pair of ureters, one urinary bladder and a urethra.There are 12 major anatomy systems: Skeletal, Muscular, Cardiovascular, Digestive, Endocrine, Nervous, Respiratory, Immune/Lymphatic, Urinary, Female Reproductive, Male Reproductive, Integumentary. Select a system below to get started.
The nervous system regulates some glands directly and others indirectly and is often referred to as the master controller of the human body.
Nov 12, 2024 · The nine major organ systems in the human body are the integumentary system, the musculoskeletal system, the respiratory system, the circulatory system, the digestive system, the excretory system, the nervous system, the endocrine system, and the reproductive system.
- The Editors of Encyclopaedia Britannica
The organization of the body from atoms and molecules up through cells, tissues, organs, and organ systems. How organ systems work together to carry out the functions of life. The four major types of human tissues, and some of their functions. The 11 major organ systems of the human body.
Jul 25, 2024 · In terms of structure and function, the human body is organized into six levels: chemical (atoms and molecules), cellular, tissue, organ, organ system and organism. Each level builds upon the previous one, from the most basic chemical components to a fully functioning human being.
