Epithelial tissues line and cover the organs, capillaries and body cavities within the body. Epithelial tissues can be broken down into four types: Simple Squamous, Simple Cuboidal, Transitional and Stratified Squamous. Epithelial tissues are named first by their amount of layers they have, and second by the cell shape.
Simple Epithelial tissues are composed of only one layer of cells, while stratified tissues are composed of more than one layer of cells. Squamous tissues are flat as compared to cuboidal or cube shaped tissues. The final tissue is called columnar, and these cells have a column like shape.
Simple squamous tissues are composed of one flat layer of cells. Simple squamous cells line air sacs, kidneys and …show more content…
Epithelial tissue can be broken down into four types of tissues: simple squamous, simple cuboidal, transitional and stratifies squamous. While these tissues differ in structure, they work together to complete the main function of protecting the organs of the body. Connective tissue supports, insulates, and stores energy for the body. Theses tissues can be broken into four types of tissues: adipose, hyaline cartilage, areolar and bone. These four tissues collaborate to ensure the proper protection, insulation and energy storage for the organs, bones and muscles of the human body. Muscle tissue provides the body with movement through the contraction and relaxation of muscles. These tissues can be further divided into three types of tissues: smooth muscle, skeletal muscle, and cardiac muscle. Each type of muscle provides movement for the different parts of the body, including the heart, muscles, bones and the movement of food and liquids in the digestive tract. Finally, the nervous tissue controls the messages that are sent throughout the body and forming the nervous
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Most types of connective tissue contain fibrous strands of the protein collagen that add strength to connective tissue. Some examples of connective tissue include the inner layers of skin, tendons, ligaments, cartilage, areolar, adipose bone and fat tissue. In addition to these more recognizable forms of connective tissue, blood is also considered a form of connective tissue.
4. Organ level- Organs are made up of different types of tissues. Organ is a discrete structure composed of at least two tissue types that performs a specific function for the body.
The skin is divided into three different parts including the epidermis, dermis, and hypodermis. The epidermis is the outermost layer of the skin. This region of the skin has no blood cells or blood vessels running through it. All of the nutrients that the epidermis needs are received through diffusion from the dermis. The epidermis is made up of stratified squamous epithelial cells. The epidermis is made of five separate layers: the stratum basale, stratum spinosum, stratum granulosum, stratum lucidum, and the stratum corneum. Starting at the innermost layer, the stratum basale is where mitosis of keratinocytes takes place. This layer of the epidermis also contains melanocytes which give the skin it’s pigment. As mitosis takes place in the stratum
The matrix of a tissue can be secreted by the connective tissues within the body. The functions of connective tissues are to transport materials around the body to give support to the weak areas to protect and support the body.
The three layers that make up healthy skin: Epidermis, Dermis and Hypodermis. Epidermis is composed of keratinized, stratified squamous epithelium. This layer provides a thick, water proof protective covering over the underlying skins. The dermis layer is composed of primarily of dense, irregular, fibrous connective tissue that is rich in collagen and elastin. The dermis contains blood vessels, nerve ending, and epidermally derived cutaneous oranges such as sweat glands, sebaceous glands and hair follicles. The last layer is Hypodermis this layer is composed primarily of loose dead skin. The fat layer provides cushioning and insulation for
Tissues are groups of cells, which are placed together to achieve a common function. There are four main types of tissue: Epithelial, connective, muscle and nervous. Most of these tissues are found in our bodies, however the epithelial tissue is covered all over the surfaces of the body.
Connective tissue - Connective tissues holds and binds everything together which are found all around the body. This type of tissue is also called fibrous connective tissues as they are consisting of a lot of fibres eg. Collagen and Elastin.
The second type of tissue found in the body is connective tissue. They lie beneath the epithelial tissue helping to connect different part of the internal structure, the cells are more widely separated from each other then in epithelial tissue. The intercellular substance known as the matrix is found in considerably large amounts. Within the matrix there are usually fibres which may be a jelly like consistency or dense and rigid depending on the type, function and positioning of the tissue. Theses fibres form a supporting system for cells to attach to. The major functions of connective tissue are to transport materials, give structural support and protection. The types of connective tissue that will be explained are blood, bone, cartilage, bone, areolar tissue and adipose tissue.
Stratum Granulosum is another shallow layer; it is made up 3 to 5 layers of flat packed grainy cells called kertaohylain cells which act similar to a water filter, to absorb any foreign bodies. This eases water loss and keeps up hydration in the skin.