The structure and function of tissue: Epithelial tissue, connective tissue, muscular tissue, nervous tissue-2

Connective Tissue

One of the most prevalent and widely dispersed tissues is connective tissue. Other body tissues are supposed to be protected, bound together, and strengthened by it. The two types of connective tissue in the body are adult (mature) connective tissue and embryonic connective tissue.

• Embryonic Connective Tissue: Mesenchyme and mucous connective tissue are both parts of embryonic connective tissue. The tissue from which all other connective tissue eventually develops is called mesenchyme. It is found in the embryo along the growing bone beneath the skin. The fetus is the main host of mucous (Wharton's Jelly) connective tissue, which is found in the fetus' umbilical cord where it supports the cord.
• Connective Tissue of Adults It differs from mesenchyme and does not alter following birth. Adult connective tissue is made up of vascular (blood) tissue, osseous (bone), cartilage, and connective tissue itself.
• Connective Tissue Proper

 Intercellular matrix and fibroblasts can be more or less fluid in connective tissue proper. the following are the various types of connective tissue:

• Loose (Areolar) Connectives Tissue: which are extensively dispersed, comprise reticular, elastic, and collagen fibers, as well as many cells immersed in fluid-like intercellular substances. It protects nerves, blood vessels, and tissues. It also creates the hypodermis, superficial fascia, and subcutaneous layer.
• Adipose Tissue: It is the fat-storing-specific subcutaneous layer that lies beneath the skin. Wherever there is loose connective tissue, it can be detected. It frequently occurs in the marrow of long bones, around the kidney, at the base and surface of the heart, as padding around joints, and behind the eye. Due to its poor heat conductivity, it reduces body heat loss.
• Dense (Collagenous) Connective Tissue: Fibers are more tightly packed in thick connective tissue than in loose connective tissue. It can be found in places where tensions are present in different directions. These can be seen in places where fibers are woven together irregularly and when several stresses are applied. Most fascia, including the deeper dermis, the periosteum of bones, and membrane capsules, experience this. In other places, parallel-arranged fibers and dense connective tissue adapt tension in one direction. Tendons and ligaments are two examples. Dense connective tissues connect muscle to bone and offer support and protection.
• Elastic Connective Tissue: These tissue's elastic fibers can freely branch. They are parts of the artery, trachea, bronchial, and lung walls. It also creates the vocal cords. Connective tissue that is elastic allows for stretching and suspension.
• Reticular Connective Tissue: The framework that connects and supports reticular connective tissue is made up of interwoven threads that can branch out at any time. It aids in the formation of the delicate stroma that supports many organs, such as the lymph nodes, liver, and spleen. Additionally, it aids in tying the cells and fibers of smooth muscle tissue together.
• Nervous Tissue
  Neurons and neuroglia are the two main cell types found in nervous tissue. Neurons are nerve cells that are responsive to different stimuli. It changes external inputs into nerve impulses. The fundamental unit of the neurological system is the neuron. There are 3 fundamental parts to it. The cell body, axons, and dendrites are these. The cells known as neuroglias serve to safeguard, feed, and support neurons. They are significant in terms of medicine because they have the capacity to multiply and cause malignant growths.
  Neuron