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In biology, tissue is an assembly of similar cells and their extracellular matrix from the same embryonic origin that together carry out a specific function. [ 1][ 2] Tissues occupy a biological organizational level between cells and a complete organ.
The human body is the entire structure of a human being. It is composed of many different types of cells that together create tissues and subsequently organs and then organ systems. The external human body consists of a head, hair, neck, torso (which includes the thorax and abdomen ), genitals, arms, hands, legs, and feet.
v. t. e. Anatomy (from Ancient Greek ἀνατομή (anatomḗ) ' dissection ') is the branch of morphology concerned with the study of the internal structure of organisms and their parts. [ 1] Anatomy is a branch of natural science that deals with the structural organization of living things. It is an old science, having its beginnings in ...
Soft tissue connects and surrounds or supports internal organs and bones, and includes muscle, tendons, ligaments, fat, fibrous tissue, lymph and blood vessels, fasciae, and synovial membranes. [ 1][ 2] Soft tissue is tissue in the body that is not hardened by the processes of ossification or calcification such as bones and teeth.
Organ (biology) In a multicellular organism, an organ is a collection of tissues joined in a structural unit to serve a common function. [ 1] In the hierarchy of life, an organ lies between tissue and an organ system. Tissues are formed from same type cells to act together in a function. Tissues of different types combine to form an organ which ...
Connective tissue is one of the four primary types of animal tissue, along with epithelial tissue, muscle tissue, and nervous tissue. [ 1] It develops mostly from the mesenchyme, derived from the mesoderm, the middle embryonic germ layer. [ 2] Connective tissue is found in between other tissues everywhere in the body, including the nervous system.
The subcutaneous tissue is derived from the mesoderm, but unlike the dermis, it is not derived from the mesoderm's dermatome region. It consists primarily of loose connective tissue, and contains larger blood vessels and nerves than those found in the dermis. It is a major site of fat storage in the body. In arthropods, a hypodermis can refer ...
The body mass of an average adult man is made up of 42% of skeletal muscle, and an average adult woman is made up of 36%. [5] Cardiac muscle tissue is found only in the walls of the heart as myocardium, and it is an involuntary muscle controlled by the autonomic nervous system. Cardiac muscle tissue is striated like skeletal muscle, containing ...