耳是人体感受声音刺激,产生听觉的器官。耳不仅有听觉功能,同时还有平衡功能,使人体保持姿势的平衡。耳虽小,但它的结构是很精密微妙的,家长了解耳的结构后,就能更好地对孩子的听觉加以保护。耳的结构耳是由外耳、中耳和内耳构成的。一、外耳:包括耳廓、外耳道和鼓膜三部分。(一)耳廓:它像一个收音机喇叭,负责收集声波,送进外耳道。耳廓主要由软骨组成,表面覆盖皮肤。因皮下组织较少,血管浅表,故受冷后易发生冻 Ear is the human body to feel the sound stimulation, the auditory organs. Ear not only auditory function, but also balance function, so that the human body to maintain the balance of posture. Although the ear is small, but its structure is very delicate and subtle, parents understand the structure of the ear, you can better protect the child’s hearing. The structure of the ear is composed of the outer ear, middle ear and inner ear. First, the outer ear: including the auricle, external auditory canal and tympanic membrane in three parts. (A) auricle: it is like a radio speaker, responsible for collecting sound waves, sent to the external auditory canal. Pinna mainly composed of cartilage, the surface covered the skin. Due to less subcutaneous tissue, superficial blood vessels, it is prone to cold after the cold