There are three types of muscle tissue found in the human body. There are visceral muscles, which consist of smooth muscle tissue, which is controlled by the autonomic nervous system and responds to both hormones and neural stimulation. Smooth muscles have no striations, as the nucleus is centrally located.
What are blisters? A blister is a collection of clear fluid trapped between or beneath the top layer of skin, the epidermis. Blisters, which are often called âwater blisters,â often break open and the fluid inside is released onto the skin. Blisters, also known as vesicles, can occur in all age groups and populations. A blood blister is a specific type of blister that is due to damage to blood vessels and tissues just under the skin, which causes blood and other fluids to pool and form a bump. Blood blisters typically form after a strong pinch of the tissues, but there are other causes as well.
Blisters are pockets of fluid that form on the skin, often as a reaction to rubbing, friction or burns. A blister is formed by the body's defence mechanisms to help protect the skin against further damage and to promote healing. Some blisters are caused by conditions such as chickenpox and impetigo. Burns: Flames, steam, or contact with a hot surface can cause blisters, as can severe sunburn or exposure to other types of radiation. 2  Contact with irritants: Skin may blister when it comes in contact with chemical irritants, cosmetics, and many plant and animal toxins.