VIEWS: 30 PAGES: 16 POSTED ON: 4/9/2010
Look out for me on different slides…… The Human Body By Dr Emily Contents 1. Heart 2. Lungs 3. Skeleton 4. Skin 5. Muscles 6. Kidneys 7. Joints 8. Teeth 9. Blood 10. Tissue fluid 11. Digestive system 12. Eyes 13. Ears The heart is a muscular organ which pumps blood around the blood vessels (the heart and blood vessels together are the Heart cardiovascular system). The heart is surrounded by the Fact….. pericardial sac. This consists of Did you know an outer membrane (the your heart is the size of a pericardium) and the cavity clenched fist (pericardial cavity) between it and the heart. This cavity is filled with a cushioning fluid (pericardial fluid). •Below an x-ray of the heart The heart has four chambers – two atria and two ventricles, all lined by a thin tissue layer called the endocardium These are the two main Lungs breathing organs, inside which gases are exchanged. They contain many tubes (bronchi and bronchioles) and air sacs (alveoli). The names of the lung parts Try this…get a mirror, and breath on it what are larynx, trachea, pleura, can you see? pleural cavity, primary A fine mist of water droplets have formed bronchus, secondary on the on the mirror. The inside of our bronchus, tertiary bronchus, lungs are moist. terminal bronchioles, alveoli, When you breath out, the moist air forms capillaries, pulmonary artery, the tiny droplets on the mirror alveolus, bronchiole, diaphragm. Hi I am skull the skeleton I The human skeleton is a am you (inside) without me frame of over 200 bones you would be flopped over which supports the body all the time organs (the viscera) and provides a solid base for the muscles to work against. Skeleton Names of bones are the cranium, mandible, cervical vertebrae, Fact clavicle, scapula, Did you know…. sternum, humerus, ribs, Your nose is thoracic vertebrae, also called your radius, ulna, sacral DENS vertebrae, coccyx, pelvis or pelvic girdle or hip girdle, carpals, Metacarpals, femur, patella, tibia, fibula, tarsal, metatarsals, phalanges. The skin or cutis is the outer body covering, Skin made up of several tissue layers. Things to do.. Write your name It registers external on a piece of stimulation, protects paper. Now get a against damage or rubber band , infection, prevents wrap it round your drying out, helps fingers so that regulate body they can not move. Try write temperature, excretes your name now. waste (sweat), stores fat You can’t move! and makes vitamin D. Fingers must be free to get a It contains many tiny special grip that structures, each type we use to write with a different function. The entire skin (tissue layers and structures), is called the integumentary system. Muscles Muscles are areas of special elastic tissue Fact …. did found all over the body. whenyou knowis the arm They may be either bent , the biceps voluntary muscles (able is the agonist and the triceps is the to be controlled by antagonist. conscious action) or involuntary muscles (not under conscious control). The main types of muscles are scapula, biceps, triceps, tendons, muscles, visceral and cardiac. The kidneys are Kidneys two organs at the back of the Fact …. body, just Did you know a quarter of your blood supply below the ribs passes through your they are the kidneys every minute main organ of excretion, filtering out unwanted substances from the blood. The bones of the skeleton meet at Joints many joints, or articulations. Some are fixed joints, allowing no movement, e.g. the sutures of the skull. However, most are movable and they give the body great flexibility. The teeth or dentes help to prepare food for digestion by cutting and grinding it up. Each tooth is set into the jaw, which has a soft Teeth tissue covering called gum. During their lives, humans have two sets of teeth – a temporary set made up of 20 teeth, and later a permanent set made up of 32 teeth Blood is a vital body fluid consisting of plasma, platelets and red and Blood white blood cells. An adult human has 5.5 litres (9.5 pints), which travel around in the circulatory system –a system of tubes called blood vessels. The blood distributes heat and cells are constantly being replace by new ones in a process called haemopiesis. Tissue fluid The smallest blood vessels, called capillaries, are those in the most direct contact with the individual cells of the body, but even they do not touch the cells. The food and oxygen they carry finally reach the cells in tissue fluid, a substance which forms the link between the circulatory system and the body’s drainage system, known as the lymphatic system. The digestive system After food is taken in, or ingested, it passes through the digestion system, gradually being broken down into simple soluble substances by a process called digestion. The simple substances are absorbed into the blood vessels around the system and transported to the body cells. Here they are used to provide energy and build new tissue. The eyes are the organs of eyes sight sending nervous impulses to the brain. When stimulated by light rays from external objects. The brain interprets the impulses to produce images. Each eye consists of a hollow, spherical capsule, made up of several layers and structures. It is set into a socket in the skull, and is protected by eyelids and eyelashes. ear The two ears are the organ of hearing and balance. Each one is divided into three areas –the outer ear, middle ear and inner ear. Outer ear An outer shell of skin and cartilage, together with a short tube. The tube lining contains special sebaceous gland which secrete cerumen (ear wax). Middle ear an air-filled cavity which contains a chain of three tiny bones called malleus incus and stapes. Inner ear a connected series of cavities in the skull, with tubes and sacs inside them. The cavities are called the bony labyrinth and are filled with one fluid. The tubes and sacs are called the membranous labyrinth. They are the cochlear duct, saccule, utricle and semicircular ducts Goodbye Frankenstein! Good luck with creating your human!