Passage (Meatus)

Passage (Meatus): description and functions

In human anatomy, a meatus can be described as a small opening or passage that connects two cavities or canals in the body. The passages in the body serve different functions and can be found in different parts of the body, such as the ear and nose.

One of the most famous examples of a passage is the external auditory meatus, which is located on the outer part of the ear. This passage connects the external auditory canal to the eardrum, providing protection and maintaining the health of the ear.

Another example is the nasal meatus, which is a groove-shaped section of the nasal cavity located under each of the nasal turbinates. The nasal passages perform an important function in the exchange of air and help to humidify and purify the inhaled air.

There are other examples of passages in the body, such as the tear ducts, which connect the tear glands to the eye, and the ureter, which connects the bladder to the urethra.

Although the passages can play an important role in the functioning of the body, they can also be the site of problems and diseases. For example, ear diseases can be associated with diseases of the external auditory canal, and nasal diseases can be associated with dysfunction of the nasal passages.

In conclusion, the passages in the body perform important functions and are an integral part of human health. Understanding their functions and roles in the body helps maintain health and prevent potential problems.

Passage or opening in anatomy is a term that describes anatomical structures that are channels or conduits through which tissues or fluids pass in the body. In this article we will look at the different types of passages and their functions.

The external auditory canal is the passage from the outer ear to the eardrum that serves to pass sound from the external environment to the middle ear. The eardrum is the boundary between the outer ear and the middle ear, and it conducts sound from the outer ear to the middle ear, where it is amplified and transmitted to the auditory nerve.

The nasal passage is one of the three grooved sections of the nasal cavity. It is located under each of the nasal conchas and serves to filter the air entering the nose. The nasal passages have a mucous membrane that moistens the air and protects the nasal mucosa from infections.

The bronchial passage is the canal that connects the bronchi to the lungs. The bronchial passage has mucous membrane and muscle tissue that helps push air through the lungs.

The esophageal meatus is the canal that connects the esophagus to the stomach. The esophageal passage has a mucous membrane to protect it from damage and muscular walls to push food through.

The ureter is the passage through which urine passes from the kidneys to the bladder. The ureter has smooth muscle to push urine through and a mucous membrane to protect it.

A lumen is an opening in the body through which liquid or gas passes. For example, the lumen in the lungs is used for breathing, and the lumen in the intestines is for digestion.

In conclusion, the passage or opening plays an important role in the anatomy and physiology of the body. They ensure the passage of liquids and gases, and also serve to protect and function organs and tissues.

**Passage** (meatus) in anatomy (from the Latin “exorbitate” - care) is an opening or passage that connects two areas of our body. In the human and animal bodies, passages can vary in shape and size, and play an important role in their functioning. The passages facilitate the transport of fluids and gases within the body and allow interaction between its different parts.

Some examples of passes include:

- **External auditory canal** - is a tubular passage from the outside of the cartilaginous part of the ear (outer ear) to the eardrum. The ear canal is a critical passage for hearing and produces sound by transmitting vibration from the eardrum to the base of the brain. - **Nasal passage** - one of three grooved areas in the nasal cavity. It is located under each turbinate and is designed to ventilate air in the nose. Using the nasal passage, you can feel and evaluate the quality of the environment.

There are many other passages in the body, each with its own functions. For example, the bronchial passage connects the bronchial tubes to the respiratory system and allows mucus to be cleared from the lungs.

The common characteristic of all passages is that they are channels that connect two parts of the body and allow the movement of material between them. Flow through the passages requires special structure and arrangement of tissues to ensure efficient flow. It is important that passages are the correct shape and size for optimal function.