Description and functions of the aperture. What animals have this organ?

Each living organism is unique, but at the same time, depending on its kind, has a certain number of identical organs performing certain functions.

Which animals have a diaphragm? In the 8th grade, this is one of the questions that arises in studying the diverse world of animals and the structure of their bodies.


Before answering the question of which animals have a diaphragm, it is necessary to know the definition of this concept. The diaphragm is a septum consisting of muscle tissue that separates the thoracic and abdominal parts in the body of humans and mammals.

Mammals are a species of animals with organized life activity, the characteristic feature of which is the feeding of offspring with mother's milk.

which animals have a diaphragm grade 8

The shape, size and location of the diaphragm in mammals depends on the structure of the body of a certain kind of animal, but basically as a human, it has the shape of a dome. The diaphragm is an important component of the respiratory process and is reduced in parallel with the muscles of the abdominal cavity.


This body consists of three departments: the sternum, rib and lumbar. Through it passes the esophagus, nerves, veins, aorta. Their shape and size also depend on the structure of the individual organism.

The presence of a diaphragm is one of thosesigns on which it is possible to distinguish mammalian animals from other species. So, for example, in birds and snakes this organ is in the state of embryo, and in fish it is completely absent.

Thus, in addition to humans, all mammalian animals have a diaphragm.

Aperture Functions

In order to understand which animals have a diaphragm, it is also important to determine its meaning and function in the body:

  1. The most important function of this organ is the separation of the thoracic and abdominal parts. The diaphragm is a necessary septum, which fences them apart.
  2. From this feature follows the following - the union of these cavities in the body with each other.
  3. The diaphragm also acts as a junction with other internal organs.
  4. It is an important muscle involved in the process of breathing.
  5. Normalizes the pressure on internal organs, organizes influx blood to the heart and outflow from it.
  6. In the digestive system, the diaphragm helpsthe bile. With the help of their contractions improves intestinal peristalsis, which has a beneficial effect on the proper digestion of food and the normalization of the stool.

which animals have a diaphragm

Possible diseases

In addition to the question of which animals have a diaphragm, biology studies its possible pathologies and methods for their investigation.

The diaphragm, like other internal organs, is prone to disease. A common problem for her is a hernia.It can be located both on the diaphragm itself, and in the region of the esophagus. Hernia can be a congenital pathology of the organ or acquired as a result of injuries of a different nature. At small sizes the diaphragmatic hernia usually does not cause discomfort. And infringement of a hernia or its large size can lead to loss of appetite, nausea, vomiting, difficulty breathing. In the presence of a hernia, internal organs can be displaced into the thorax.

Also, the diaphragm can be damaged as a result of closed and open injuries of the abdominal cavity or thoracic region, the fall of the animal from a great height.

It is necessary to take into account possible diseases in order to fully reveal the topic, which animals have a diaphragm.

which animals have a diaphragm biology

In case the animal is domesticated and injuredabdominal or thoracic department, it is necessary to conduct a complete examination in a veterinary clinic. First of all, the study is carried out using radiography and fluorography, which can detect damage to the diaphragm, the presence or absence of a hernia and tumors.

Treatment depends on the level of complexity of the disease and the nature of the damage. It is possible to use complex therapy or surgical intervention.

The described information will allow to study this important organ, its structure and functions, and also will answer a question, what animals have a diaphragm.