Lesson 1 Passage 1 Human Body医学专业英语.ppt

* Human Body Chapter 1 Human Body In this passage you will learn: ● Classification of organ system ● Structure and function of each organ system ● Associated medical terms Ten systems : ●Skeletal system ●Muscular system ●Circulatory system ●Respiratory system ●Digestive system ●Urinary system ●Endocrine system ●Nervous system ●Reproductive system ●Skin Ten systems : Ten systems : Skeletal system Made of : bones, joints and cartilage Function : to provide support and protection for the soft tissues and the organs of the body and to provide points of attachment for the muscles that moves the body Joints : make the bones join together 1. no movement 2. permit movement in the skull in shoulder, hip joints Cartilage --- a more flexible material than bone. Function --- It serves as a protective, cushioning layer where bones come together. It also connects the ribs to the breastbone and provides a structural base for the nose and the external ear. Muscular system Made of --- striated muscle, heart muscles, smooth muscles Function : allows the body move, and its contractions produce heat, which helps maintain a constant body temperature Circulatory system Made of : heart blood vessels blood Circulatory System’s Function All parts of the body must have nourishment and oxygen in order to function and grow , and their waste products must be removed before they accumulate and poison the body . The circulatory system distributes needed ones . The Blood The blood---is also Part of the body’s Defense system . It has antibodies and white blood cells that protect the body against foreign invaders. The Heart The heart---a muscle that is divided into two nearly identical halves: one half receives blood from the lungs and s