Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Systems Endocrine system (glands) Digestive system Excretory system Respiratory system Integumentary system Endocrine System (glands) • Specialized organs that affect growth, development, sexual activities and health of the entire body • Glands are specialized organs that remove certain elements from the blood to convert them into new compounds Endocrine System (glands) • Exocrine or duct glands – Canals that lead from the gland to a particular body part – Includes sweat and oil glands of the skin and intestinal glands • Endocrine or ductless glands – Secrete hormones directly into bloodstream and influence welfare of body – Hormones such as insulin, adrenaline and estrogen stimulate functional activity or secretion in other parts of the body Digestive System • Also called gastrointestinal system • Responsible for changing food into nutrients and waste • Complete digestive process takes about nine hours • Digestive Enzymes – Chemicals that change food into a form capable of being used by the body Excretory System • Includes kidneys, liver, skin, intestines and lungs • Responsible for purifying the body by eliminating waste matter • The metabolism of body cells forms various toxic substances that, if retained, could poison the body Excretory System • Kidneys – Excrete urine • Liver – Discharges bile • Skin – Eliminates perspiration Excretory System • Large intestine – Evacuates decomposed and undigested food • Lungs – Exhale carbon dioxide – Body cell metabolism forms toxic substances which might poison the body if not eliminated Respiratory System • Situated in chest cavity and protected by ribs • Enables breathing and consists of the lungs and air passages • Its protected on both sides by ribs Respiratory System • Diaphragm – Muscular wall that separates chest (thorax) from abdominal region – Helps control breathing • Lungs – Spongy tissues composed of microscopic cells that take in air that is exchanged for carbon dioxide during one breathing cycle Respiratory System • Lungs – Inhalation • Oxygen is absorbed into the blood • Oxygen is the most essential element for life • Man can survive more than 60 days without food, a few days without water, only a few minutes without oxygen – Exhalation • Carbon dioxide is expelled Integumentary System • Made up of the skin and its various accessory organs, such as the oil and sweat glands, sensory receptors, hair and nails