In this task I am outlining the structures of the main tissues of the body.
KEY WORDS- * Epithelial: squamous, ciliated, globletcells * Blood: red blood cells, white blood cells, platelets * Cartilage and bone * Areolar tissue * Adipose tissue * Striated muscle * Sensory and motor neurons.

Tissues are groups of similar cells that perform a common function in the body.
EPITHELIAL-Epithelial tissue protects the body from moisture loss, bacteria, and internal injury. There are two kinds of epithelial tissues,
Covering and lining epithelium covers almost all of our internal and external body surfaces; for example, the outermost layer of our skin and other organs, and the internal surface lining of our lymph vessels and digestive tract.
Glandular epithelium secretes hormones or other products such as stomach acid, sweat, saliva, and milk. Ciliated are tiny hair like structures on the surface of the cell. The hairs sweep hair, mucus, trapped dust and bacteria up to the back of the throat where it can be swallowed. The major function of goblet cells is to store mucin which when dissolved in water forms mucus. The goblet cells use both apocrine as well as merocrine ways for storing mucus. The cytoplasm of these cells majorly is covered by the granules, excluding the bottom.
Where Are Epithelial Cells Found?

* Epithelial cells cover the major cavities of the body. * Epithelia form the structure of the lung, including the alveoli or air sacs where gas exchange occurs. * Cells cover most organs, such as the stomach and small intestine, kidney, and pancreas. They also cover the oesophagus. * Cells are also found in ducts and glands, like the bile duct and salivary glands. * Epithelia can specialize to act as sensory receptors. They form taste buds, line the nose, and are in the ear. They are also found in the eye. * Female reproductive organs are covered with ciliated epithelial cells. * The skin is made of epithelial cells. Its striated layers demonstrate the extensive morphology of epithelia. * Capillary beds are made of epithelium. * Epithelia are the first type of cell to differentiate in the embryo. This occurs during the eight-cell stage.

BLOOD CELL-White blood cells are part of the immune system and help the body fight against infections. They circulate in the blood so that they can be transported to an area where an infection has developed.
White blood cells are an important component of your blood system, which is also made up of red blood cells, platelets, and plasma. Red blood cells carry oxygen, while white cells do not, for example. Red blood cells in humans do not have nuclei, while white cells do.
Red blood cells are responsible for picking up carbon dioxide from our blood and for transporting oxygen. The essential component of red blood cells is haemoglobin, which can hold oxygen so the cells can then transport around the body. This process is what gives the body energy, which explains why people who suffer from anaemia— low count red blood cells— often, feel tired and sleepy. A high count of red blood cells is rare, but it can happen. Causes include kidney disease, dehydration, anabolic steroid use, and pulmonary fibrosis. People suffering from a high count of red blood cells usually have impaired circulation, and are at a high risk for heart disease. Platelets are parts of the blood that help the blood clot. They are smaller than red or white blood cells. Blood is typically drawn from a vein, usually from the inside of the elbow or the back of the hand.
Bone and cartilage are types of connective tissues in the body. A bone is hard tissue that forms the skeletal structure of the body. Cartilage, is not as hard and rigid as bone, and is present in areas of the body like the ear, nose, and joints. The bone protect the body against mechanical damage, assist in the movement of the body, provide a framework and shape for the body, store minerals, and produce red blood & white blood cells.
Cartilage reduces friction at joints, supporting the respiratory tract, acting as shock absorbers between weight-bearing bones, and maintaining the shape and flexibility of fleshy appendages. Areolar Tissue is a loose connective tissue that consists of a meshwork of collagen, elastic tissue and reticular fibres. Areolar tissue is found in many locations around the body. The function of Areolar tissue is to bind our skin to the muscles beneath.
Adipose tissue is a loose connective tissue that fills up space between organs and tissues and provides structural and metabolic support. It is part of the nutrient glue that holds us all together. Adipose tissue is often referred to as fat. Although fat is the main component, it is not the only component found in the tissue.

Striated muscle is also known as the skeletal muscle, because it is attached mainly to the bones and skin, and is responsible for the mobility of the body and limbs. The movement of striated muscle is controlled voluntarily, unlike the smooth muscle of the internal organs and the cardiac muscle of the heart, which are involuntary.

Sensory neurones carry signals from receptors to the spinal cord and brain.
Motor neurones carry signals from the CNS (central neuron system to effector.