Tissues in the Body

Epithelial, Connective, Muscle, and Nervous

Epithelial Tissue

Epithelial Tissue covers the surface of the body. It is composed of closely packed cells arranged in one or more layers. The tissue also lines the insides of organs in the body. Epithelial tissue is classified by the cell's shape and arrangement. The shape of the cells can be squamous (flat), cuboidal (cube shaped), or columnar (elongated). The arrangement can be simple (one layer) or stratified (multi layer). The Epithelial tissue functions in protection, sensation, secretion, absorption, excretion, diffusion, cleaning, and reduces friction.

Connective Tissue

Connective Tissue is made up of fibers forming a framework and support structure for body tissues and organs. Connective tissue surrounds many organs. Cartilage, bone, blood, dense connective tissue, and loose connective tissue are all forms of connective tissue. Connective tissue connects, binds, and supports structure in the body. It protects and cushions organs and other tissues. Without connective tissue the body wouldn't be pieced together and wouldn't be able to stand up.

Nervous Tissue

Nervous Tissue is found in the brain, spinal cord, and the nerves throughout the body. Nervous tissue generates and transmits nerve impulses to and from body organs via neuron. Nervous tissue allows humans to sense stimuli in both the internal and external environment.

Muscle Tissue

Muscle tissue is composed of three main types of muscles; Skeletal, Smooth, and Cardiac. Cardiac muscle is located in the heart and controls the heart beat. Smooth muscle is found in the walls of organs and blood vessels. It helps to move blood, waste, and food throughout the body's organs. Skeletal muscle is found in large body muscles such as the biceps or triceps. The skeletal muscle aids in body movement.

Nervous Tissue

Nervous Tissue is the best type of tissue for its purpose and placement in the body. Nervous tissue is located in the main nervous system organs; such as the brain and spinal cord. The main function of this tissue is to transmit nerve impulses and without these impulses the internal body wouldn't have access to the outside world.