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Explain different types of tissues
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There are Four main types of tissues-
1). Epithelial
2). Connective
3). Nervous
4). Muscle
Each is made of specialized cells that are grouped together according to structure and function.
✨Epithelial tissue refers to groups of cells that cover the exterior surfaces of the body, line internal cavities and passageways, and form certain glands. The function of epithelial tissues includes protection, secretion, absorption, and filtration. The skin is an organ made up of epithelial tissue which protects the body from dirt, dust, bacteria and other microbes that may be harmful.
✨Connective tissue, as its name implies, binds the cells and organs of the body together.
Connective tissues perform a variety of functions including support and protection. The following tissues are found in the human body, ordinary loose connective tissue, fat tissue, dense fibrous tissue, cartilage, bone, blood, and lymph, which are all considered connective tissue.
✨Muscle tissue contracts forcefully when excited, providing movement.
Muscle tissue are of three types- skeletal, smooth, and cardiac.Skeletal muscle is a voluntary type of muscle tissue that is used in the contraction of skeletal parts. Smooth muscle is found in the walls of internal organs and blood vessels. It is an involuntary type. The cardiac muscle is found only in the walls of the heart and is involuntary in nature.
✨Nervous tissue is also excitable, allowing for the generation and propagation of electrochemical signals in the form of nerve impulses that communicate between different regions of the body. Nervous tissue is composed of specialised cells which not only receive stimuli but also conduct impulses to and from all parts of the body.
Nerve cells or neurons are long and string-like.
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❤ Tissue ;
Tissue is a cellular organizational level between cells and a complete organ. A tissue is an ensemble of similar cells and their extracellular matrix from the same origin that together carry out a specific function. Organs are then formed by the functional grouping together of multiple tissues. The English word is derived from the French tissue, meaning something that is woven, from the verb tisser, "to weave".
❤ Types -
❤ Epithelial tissue-
Simple epithelium consists of a single layer of epithelial cells. The free surface of epithelial tissue is usually exposed to fluid or the air, while the bottom surface is attached to a basement membrane. Simple epithelial tissue lines body cavities and tracts.
❤ Connective tissue-
Connective tissue is one of the four basic types of animal tissue, along with epithelial tissue, muscle tissue, and nervous tissue. It develops from the mesoderm. Connective tissue is found in between other tissues everywhere in the body, including the nervous system. In the central nervous system, the three outer membranes that envelop the brain and spinal cord are composed of connective tissue. They support and protect the body. All connective tissue consists of three main components: fibers,
❤ Muscles cell-
A myocyte (also known as a muscle cell) is the type of cell found in muscle tissue. Myocytes are long, tubular cells that develop from myoblasts to form muscles in a process known as myogenesis. There are various specialized forms of myocytes: cardiac, skeletal, and smooth muscle cells, with various properties.
❤ Nervous cell-
A neuron, also known as a neurone and nerve cell, is an electrically excitable cell that receives, processes, and transmits information through electrical and chemical signals. These signals between neurons occur via specialized connections called synapses. Neurons can connect to each other to form neural pathways, and neural circuits. Neurons are the primary components of the central nervous system, which includes the brain and spinal cord, and of the peripheral nervous system, which comprises the autonomic nervous system and the somatic nervous system.
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