Fabrics

The rudimentary organs of the human being

Rudimentary organs of humans are those organs in the body that, over the course of evolution, have ceased to function and are no longer significant.

Blood plasma

Blood plasma is the liquid extracellular part of the bloodstream, making up about 60% of the blood. Its consistency can be transparent or slightly yellowish (due to particles of bile pigment or other organic elements), and plasma can also be cloudy as a result of eating fatty foods.

Blood

Blood is a type of connective tissue. Its intercellular substance is liquid - it is blood plasma. In the blood plasma there are ("float") its cellular elements: erythrocytes, leukocytes, and also thrombocytes (blood platelets).

Nerve tissue

Nervous tissue is the main structural element of the organs of the nervous system - the brain and spinal cord, nerves, nerve nodes (ganglia) and nerve endings. Nervous tissue consists of nerve cells (neurocytes, or neurons) and anatomically and functionally associated auxiliary cells of neuroglia.

Muscle tissue

Muscle tissue (textus muscularis) is a group of tissues (striated, smooth, cardiac) of different origin and structure, united by a functional feature - the ability to contract - shorten. Along with the mentioned varieties of muscle tissue formed from the mesoderm (mesenchyme), in the human body there is muscle tissue of ectodermal origin - myocytes of the iris of the eye.

Cartilage and bone tissue

Connective tissues also include cartilage and bone tissues, which form the skeleton of the human body. These tissues are called skeletal. Organs built from these tissues perform the functions of support, movement, and protection. They also participate in mineral metabolism.

Connective tissue

Connective tissue (textus connectivus) is a large group of tissues, including connective tissues proper (loose and dense fibrous tissues), tissues with special properties (reticular, fatty), liquid (blood) and skeletal (bone and cartilage).

Epithelial tissue

Epithelial tissue (textus epithelialis) covers the surface of the body and lines the mucous membranes, separating the body from the external environment (integumentary epithelium). Glands are formed from epithelial tissue (glandular epithelium).