Internal Organs Of Human Body And Its Functions Pdf
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- The Human Body: Anatomy, Facts & Functions
- The Human Body
- Human Body Organ Systems
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The Human Body: Anatomy, Facts & Functions
You have probably heard this Billy Ray Cyrus song. Heartache, heartbreak Did you ever wonder why the heart is associated with love? The heart was once thought to be the center of all thought processes, as well as the site of all emotions. This notion may have stemmed from very early anatomical dissections that found many nerves can be traced to the region of the heart. The fact that the heart may start racing when one is excited or otherwise emotionally aroused may have contributed to this idea as well.
In fact, the heart is not the organ that controls thoughts or emotions. The organ that controls those functions is the brain. An organ is a collection of tissues joined in a structural unit to serve a common function.
Organs exist in most multicellular organisms, including not only humans and other animals but also plants. In single-celled organisms such as bacteria, the functional equivalent of an organ is an organelle. The main tissue may be unique to that specific organ.
The heart also includes nervous and connective tissues that are required for it to perform its major function. For example, nervous tissues control the beating of the heart, and connective tissues make up heart valves that keep blood flowing in just one direction through the heart.
The human body contains five organs that are considered vital for survival. They are the heart, brain, kidneys, liver, and lungs. The locations of these five organs and several other internal organs are shown in the figure below. If any of the five vital organs stops functioning, the death of the organism is imminent without medical intervention. Functionally related organs often cooperate to form whole organ systems. The 12 diagrams in the figures below show 11 human organ systems, including separate diagrams for the male and female reproductive systems.
Some of the organs and functions of the organ systems are identified in the figure. Each system is also described in more detail in the text that follows. Most of these human organ systems are also the subject of separate chapters in this Flexbook. Organs of the integumentary system include the skin, hair, and nails.
The skin is the largest organ in the body. It encloses and protects the body and is the site of many sensory receptors. The skeletal system consists of bones, joints, teeth. The bones of the skeletal system are connected by tendons, ligaments, and cartilage. Functions of the skeletal system include supporting the body and giving it shape. Along with the muscular system, the skeletal system enables the body to move. The bones of the skeletal system also protect internal organs, store calcium, and produce red and white blood cells.
The muscular system consists of three different types of muscles, including skeletal muscles, which are attached to bones by tendons and allow for voluntary movements of the body. Smooth muscle tissues control the involuntary movements of internal organs, such as the organs of the digestive system, allowing food to move through the system. Smooth muscles in blood vessels allow vasoconstriction and vasodilation and thereby help regulate body temperature. Cardiac muscle tissues control the involuntary beating of the heart, allowing it to pump blood through the blood vessels of the cardiovascular system.
The nervous system includes the brain and spinal cord, which make up the central nervous system, and nerves that run throughout the rest of the body, which make up the peripheral nervous system. The nervous system controls both voluntary and involuntary responses of the human organism and also detects and processes sensory information. The endocrine system is made up of glands that secrete hormones into the blood, which carries the hormones throughout the body. Endocrine hormones are chemical messengers that control many body functions, including metabolism, growth, and sexual development.
The master gland of the endocrine system is the pituitary gland, which produces hormones that control other endocrine glands. Some of the other endocrine glands include the pancreas, thyroid gland, and adrenal glands. The cardiovascular system also called the circulatory system includes the heart, blood, and three types of blood vessels: arteries, veins, and capillaries.
The heart pumps blood, which travels through the blood vessels. The main function of the cardiovascular system is transport. Oxygen from the lungs and nutrients from the digestive system are transported to cells throughout the body. Carbon dioxide and other waste materials are picked up from the cells and transported to organs such as the lungs and kidneys for elimination from the body.
The cardiovascular system also equalizes body temperature and transports endocrine hormones to cells in the body where they are needed. The urinary system includes the pair of kidneys, which filter excess water and a waste product called urea from the blood and form urine.
Two tubes called ureters carry the urine from the kidneys to the urinary bladder, which stores the urine until it is excreted from the body through another tube named the urethra. The kidneys also produce an enzyme called renin and a variety of hormones. These substances help regulate blood pressure, the production of red blood cells, and the balance of calcium and phosphorus in the body. Organs and other structures of the respiratory system include the nasal passages, lungs, and a long tube called the trachea, which carries air between the nasal passages and lungs.
The main function of the respiratory system is to deliver oxygen to the blood and remove carbon dioxide from the body. Gases are exchanged between the lungs and blood across the walls of capillaries lining tiny air sacs alveoli in the lungs. The lymphatic system is sometimes considered to be part of the immune system. It consists of a network of lymph vessels and ducts that collect excess fluid called lymph from extracellular spaces in tissues and transport the fluid to the bloodstream.
The lymphatic system also includes many small collections of tissue, called lymph nodes, and an organ called the spleen, both of which remove pathogens and cellular debris from the lymph or blood.
In addition, the thymus gland in the lymphatic system produces some types of white blood cells lymphocytes that fight infections. The digestive system consists of several main organs — including the mouth, esophagus, stomach, and small and large intestines — that form a long tube called the gastrointestinal GI tract. Food moves through this tract where it is digested, its nutrients absorbed, and its waste products excreted.
The digestive system also includes accessory organs such as the pancreas and liver that produce enzymes and other substances needed for digestion but through which food does not actually pass. The reproductive system is the only body system that differs substantially between individuals.
There is a range of Biological sex, but most books divide them into male and female. The male and female reproductive systems are shown separately because of their significant differences. However, you may have never heard of a penis transplant.
The first U. The hour procedure involved a team of more than 50 physicians, surgeons, and nurses. The patient was a year-old man who had lost his penis to cancer in The surgical milestone involved grafting microscopic blood vessels and nerves of the donor organ to those of the recipient. As with most transplant patients, this patient will have to take immunosuppressing drugs for the rest of his life so his immune system will not reject the organ.
What are the three organ systems involved in regulating human body temperature? True or False. The respiratory system helps to remove wastes from the body. Professor Anthony Atala is working to answer an important question: Can we grow new replacement organs rather than transplanting organs from other people?
In his state-of-the-art lab, he and his associates are actually growing human organs, including blood vessels, bladders, and kidneys. Watch the fascinating TED talk below to see how they are doing it. While organ transplant saves countless lives, they oftentimes fail. Learn more here:. Human Organs An organ is a collection of tissues joined in a structural unit to serve a common function.
Vital Organs The human body contains five organs that are considered vital for survival. The heart is located in the center of the chest, and its function is to keep blood flowing through the body. Blood carries substances to cells that they need and also carries away wastes from cells.
It is the seat of all thoughts, memories, perceptions, and feelings. The two kidneys are located in the back of the abdomen on either side of the body. Their function is to filter blood and form urine, which is excreted from the body. The liver is located on the right side of the abdomen. It has many functions, including filtering blood, secreting bile that is needed for digestion, and producing proteins necessary for blood clotting.
The two lungs are located on either side of the upper chest. Their main function is exchanging oxygen and carbon dioxide with the blood. Do you know the functions of any of the other organs in the diagram? Human Organ Systems Functionally related organs often cooperate to form whole organ systems.
Integumentary System Organs of the integumentary system include the skin, hair, and nails. Skeletal System The skeletal system consists of bones, joints, teeth. Muscular System The muscular system consists of three different types of muscles, including skeletal muscles, which are attached to bones by tendons and allow for voluntary movements of the body. Nervous System The nervous system includes the brain and spinal cord, which make up the central nervous system, and nerves that run throughout the rest of the body, which make up the peripheral nervous system.
Endocrine System The endocrine system is made up of glands that secrete hormones into the blood, which carries the hormones throughout the body. Cardiovascular System The cardiovascular system also called the circulatory system includes the heart, blood, and three types of blood vessels: arteries, veins, and capillaries. Urinary System The urinary system includes the pair of kidneys, which filter excess water and a waste product called urea from the blood and form urine.
Respiratory System Organs and other structures of the respiratory system include the nasal passages, lungs, and a long tube called the trachea, which carries air between the nasal passages and lungs.
The Human Body
It is an old science, having its beginnings in prehistoric times. Anatomy and physiology , which study the structure and function of organisms and their parts respectively, make a natural pair of related disciplines , and are often studied together. Human anatomy is one of the essential basic sciences that are applied in medicine. The discipline of anatomy is divided into macroscopic and microscopic. Macroscopic anatomy, or gross anatomy , is the examination of an animal's body parts using unaided eyesight.
Human Body Organ Systems
Report a problem. Prostate: 18 to 20 grams, or just barely an ounceEquivalent of: About three cherry tomatoes, For each organ system, identify some of its organs and functions.
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The human body is a wonderful creation, and organs are the most precious things we own. The harmonious working of these organ systems similar to the machines, along with the intricate network of wires and tubes results in a healthy life. Grade 3 through grade 6 kids get an insight into the major organ systems like digestive, respiratory, circulatory, nervous, excretory, skeletal, reproductive system, the major organs involved in each, and the functions carried out by them as they walk through these printable human body systems worksheets and charts.
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A number of complex processes and systems together form the human body. Zillions of cells and many organs work in coordination in the body to enable us to perform everyday functions. The human body and its anatomy can be complicated topics to study and revise. Therefore, we have come up with this list containing all the facts related to the human body. This list will help you memorize all the important body parts and their functions, for your exam. You can get the direct link to download the PDF at the end of the article! We hope you find this post on Functions and Anatomy of Human Body helpful.
Younger primary students may have little knowledge about internal bodily organs. They tend to think the contents of the body are what they have seen being put into or coming out of it, such as food and blood. Their experiences with everyday cuts, scratches and bruises seem to reinforce a view that blood is below the surface of the skin, filling the spaces inside the body like a bag of blood. Older children are more likely to be able to list a large number of organs but may not fully understand the function or interconnected nature of these. For example, students at these levels may realise that the heart is a pump but not realise that the blood returns to the heart, or they may believe that the brain helps the body parts but not always realise that the body helps the brain.
The human body is everything that makes up, well, you. The basic parts of the human body are the head, neck, torso, arms and legs. Our bodies consist of a number of biological systems that carry out specific functions necessary for everyday living. The job of the circulatory system is to move blood, nutrients, oxygen, carbon dioxide, and hormones, around the body. It consists of the heart, blood, blood vessels,arteries and veins. The digestive system consists of a series of connected organs that together, allow the body to break down and absorb food, and remove waste.
Different organs can work together to perform a common function, like how the parts of your digestive system break down food. We refer to an integrated unit as an organ system. Groups of organ systems work together to make complete, functional organisms, like us! There are 11 major organ systems in the human body. The circulatory system is a body-wide network of blood, blood vessels, and lymph.
The liver is the largest solid organ and the largest gland in the human body. It carries out over essential tasks. Classed as part of the digestive system, the roles of the liver include detoxification, protein synthesis, and the production of chemicals that help digest food. This MNT Knowledge Center article will cover the main roles of the liver, how the liver regenerates, what happens when the liver does not function correctly, and how to keep the liver healthy. Weighing between 3. It is situated above and to the left of the stomach and below the lungs.
This article contains a list of organs of the human body. It is widely believed that there are organs; however, there is no universally standard definition of what constitutes an organ, and some tissue groups' status as one is debated. For example, this list contains much more than 79 different organs. This article incorporates text in the public domain from the 20th edition of Gray's Anatomy From Wikipedia, the free encyclopedia.
You have probably heard this Billy Ray Cyrus song. Heartache, heartbreak Did you ever wonder why the heart is associated with love?
The organ systems of the human body all have specific functions. The VA uses the categories of major organ systems to classify disability claims. These systems, while interdependent, can become out of tune. When one is not functioning properly, the others will attempt to correct the problem.
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