structure of the human ear - this is a whole chain of auditory pathways, and it is so important that any negative impact may become a very serious problem.
With four divisions, we can pick up any sounds that surround us.The most visible is the authority for us pinna and behind the external auditory canal.According to it, the sound passes to the middle ear.If the outer ear at birth has undergone deformation, the sound has to pass normally can not.Also, hearing can be impaired because of the sulfur, which often blocks the ear canal.
No matter how we looked at the structure of the human ear, the middle ear, we do not see.However, it is and it is placed behind the eardrum.Middle ear cavity ideally filled with air, but the presence of any disease, it is filled with liquid.Immobility eardrum indicates the presence of liquid, inflammation or other disorders.
Next structure represented by the human ear inner ear, which houses about forty thousand hair cells.They are the catchers acoustic oscillations of different frequencies and generators weak electrical impulses transmitted to the brain, or rather in its bark.Damage or loss of hair cells is a stopper for electrical pulses, resulting in a significant hearing loss.
Snail and auditory centers of the brain are the passage to the auditory nerve fibers.Electrical impulses arising in the cochlea, reach the auditory centers of the brain, and the obstacles encountered in their way, distorting the sound.It becomes unclear, muted.
structure of the human ear is not easy hearing aid, which requires special attention and careful maintenance.
jaw structure of man - this is a very complex mechanism, which at first glance seems to be only performs the function of chewing.However, it is not.
most important is the upper jaw, a steam room, located in the upper front area of the facial skull.It is considered one of the pneumatic bones forming the maxillary sinus.
bone itself is represented by the body and four processes.The body has four surfaces: orbital, head, nose, infratemporal.Scion has the frontal bone, zygomatic, frontal and alveolar part.
lower jaw bone is presented unpaired.In itself it is a large and strong, having two symmetrical halves that are fused into a single bone in the middle of the first year of life.The lower jaw has a body and a pair of flattened branches.The body of the mandible due to the base and the top.The upper part smoothly into the so-called alveolar bone.Each side of the lower jaw defines an angle of the mandible.The result of the dentist depends on the knowledge of the structure of the bones of the lower jaw.
structure of the human head - it is the structure of the skull, which is divided into two parts - the face and brain.
Brain part is frontal, two parietal, two temporal, occipital and other bones.All the bones serve as a reliable protection of the brain.Some bones of the cranium are interconnected very difficult seam reminiscent Connect crocodile teeth, which, when the clutch includes everyone in its recess.
inside the brain cavity of the skull shows that the brain is full.
front portion has a pair of dice: maxillary, zygomatic, nasal, palatal, mandibular unmatched.The bones are connected by a fixed way.
Also in the front part of the nasal cavity there, mouth and two sockets.
Hollow looks like a deep depression, which is located in the eyeball, framed plexus nerves, muscles and blood vessels.
The nasal cavity is divided by a partition into two halves, each of which has a narrower nasal passages.
oral cavity is separated from the bow using the palatine bone and maxillary processes.It is bounded by the upper and lower edges of the jaws.
