Which tissue supports body organs

Serous membranes are identified according to location. Three serous membranes are found lining the thoracic cavity; two membranes that cover the lungs pleura and one membrane that covers the heart pericardium. A fourth serous membrane, the peritoneum, lines the peritoneal cavity, covering the abdominal organs and forming double sheets of mesenteries that suspend many of the digestive organs.

A cutaneous membrane is a multi-layered membrane composed of epithelial and connective tissues. The apical surface of this membrane exposed to the external environment and is covered with dead, keratinized cells that help protect the body from desiccation and pathogens. The skin is an example of a cutaneous membrane. Aggregations of cells in the human body be classified into four types of tissues: epithelial, connective, muscle, and nervous.

Epithelial tissues act as coverings, controlling the movement of materials across their surface. Connective tissue binds the various parts of the body together, providing support and protection.

Muscle tissue allows the body to move and nervous tissues functions in communication. All cells and tissues in the body derive from three germ layers: the ectoderm, mesoderm, and endoderm. Membranes are layers of connective and epithelial tissues that line the external environment and internal body cavities of the body.

Synovial membranes are connective tissue membranes that protect and line the freely-movable joints. Epithelial membranes are composed of both epithelial tissue and connective tissue.

These membranes are found lining the external body surface cutaneous membranes and mucous membranes or lining the internal body cavities serous membranes. The four types of tissues in the body are epithelial, connective, muscle, and nervous. Epithelial tissue is made of layers of cells that cover the surfaces of the body that come into contact with the exterior world, line internal cavities, and form glands. Connective tissue binds the cells and organs of the body together and performs many functions, especially in the protection, support, and integration of the body.

Muscle tissue, which responds to stimulation and contracts to provide movement, is divided into three major types: skeletal voluntary muscles, smooth muscles, and the cardiac muscle in the heart.

Nervous tissue allows the body to receive signals and transmit information as electric impulses from one region of the body to another. The zygote is described as omnipotent because it ultimately gives rise to all the cells in your body including the highly specialized cells of your nervous system. Describe this transition, discussing the steps and processes that lead to these specialized cells.

The zygote divides into many cells. As these cells become specialized, they lose their ability to differentiate into all tissues. At first they form the three primary germ layers. There are two basic types of tissue membranes: connective tissue and epithelial membranes Figure.

Connective Tissue Membranes The connective tissue membrane is formed solely from connective tissue. These membranes encapsulate organs, such as the kidneys, and line our movable joints. A synovial membrane is a type of connective tissue membrane that lines the cavity of a freely movable joint. For example, synovial membranes surround the joints of the shoulder, elbow, and knee.

Fibroblasts in the inner layer of the synovial membrane release hyaluronan into the joint cavity. The hyaluronan effectively traps available water to form the synovial fluid, a natural lubricant that enables the bones of a joint to move freely against one another without much friction. This synovial fluid readily exchanges water and nutrients with blood, as do all body fluids. The epithelial membrane is composed of epithelium attached to a layer of connective tissue, for example, your skin.

The mucous membrane is also a composite of connective and epithelial tissues. Sometimes called mucosae, these epithelial membranes line the body cavities and hollow passageways that open to the external environment, and include the digestive, respiratory, excretory, and reproductive tracts. Mucous, produced by the epithelial exocrine glands, covers the epithelial layer. A serous membrane is an epithelial membrane composed of mesodermally derived epithelium called the mesothelium that is supported by connective tissue.

These membranes line the coelomic cavities of the body, that is, those cavities that do not open to the outside, and they cover the organs located within those cavities. They are essentially membranous bags, with mesothelium lining the inside and connective tissue on the outside. Serous fluid secreted by the cells of the thin squamous mesothelium lubricates the membrane and reduces abrasion and friction between organs.

Serous membranes are identified according locations. Three serous membranes line the thoracic cavity; the two pleura that cover the lungs and the pericardium that covers the heart. A fourth, the peritoneum, is the serous membrane in the abdominal cavity that covers abdominal organs and forms double sheets of mesenteries that suspend many of the digestive organs. The skin is an epithelial membrane also called the cutaneous membrane. It is a stratified squamous epithelial membrane resting on top of connective tissue.

The apical surface of this membrane is exposed to the external environment and is covered with dead, keratinized cells that help protect the body from desiccation and pathogens. The human body contains more than types of cells that can all be classified into four types of tissues: epithelial, connective, muscle, and nervous. Epithelial tissues act as coverings controlling the movement of materials across the surface.

Connective tissue integrates the various parts of the body and provides support and protection to organs. Muscle tissue allows the body to move. Nervous tissues propagate information. The study of the shape and arrangement of cells in tissue is called histology. All cells and tissues in the body derive from three germ layers in the embryo: the ectoderm, mesoderm, and endoderm. Different types of tissues form membranes that enclose organs, provide a friction-free interaction between organs, and keep organs together.

Synovial membranes are connective tissue membranes that protect and line the joints. It is present in almost every organ, forming a large part of skin, tendons, joints, ligaments, blood vessels, and muscles. The characteristics of connective tissue and the types of cells it contains vary, depending on where it is found in the body.

Organs are the body's recognizable structures for example, the heart, lungs, liver, eyes, and stomach that perform specific functions. An organ is made of several types of tissue and therefore several types of cells Cells Often thought of as the smallest unit of a living organism, a cell is made up of many even smaller parts, each with its own function. Human cells vary in size, but all are quite small. For example, the heart Biology of the Heart The heart and blood vessels constitute the cardiovascular circulatory system.

The heart pumps the blood to the lungs so it can pick up oxygen and then pumps oxygen-rich blood to the body The eye Structure and Function of the Eyes The structures and functions of the eyes are complex.

Each eye constantly adjusts the amount of light it lets in, focuses on objects near and far, and produces continuous images that are instantly Even an organ as apparently simple as the gallbladder Gallbladder and Biliary Tract The gallbladder is a small, pear-shaped, muscular storage sac that holds bile and is interconnected to the liver by ducts known as the biliary tract.