Signs of similarity between humans and animals

The similarity between humans and animals is confirmed by the structure of the human embryo at the early stages of intrauterine development (the presence of a tail, gill slits, etc.).

The human body has signs of similarity with the organisms of vertebrates.

In the internal structure, this is expressed in the presence of:

  • spine and skull,
  • nervous system (spinal cord and brain),
  • closed circulatory system, etc.

The similarity with mammals is even more pronounced:

  • mammary glands,
  • four-chambered heart,
  • diaphragm,
  • hairline,
  • differentiated teeth, etc.

In the external structure, this is expressed by the fact that the human body, like that of terrestrial mammals, consists of a head, a body, and two pairs of limbs.

Man has the greatest similarity with primates in the following parameters:

  • lack of a tail,
  • the shape of the eyes and ears,
  • the thumb of the upper extremities is opposed to the rest,
  • the presence of nails.

In addition, humans and primates have similar biochemical parameters:

  • blood groups,
  • biochemical composition of blood,
  • metabolism,
  • the same diseases.

At the same time, only a person is characterized by true upright walking, a developed brain, and articulate speech.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.