What type of membranes line joint cavities

The two main types of epithelial membranes are the mucous membranes and serous membranes. Mucous membranes are epithelial membranes that consist of epithelial tissue that is attached to an underlying loose connective tissue. These membranes, sometimes called mucosae , line the body cavities that open to the outside. The entire digestive tract is lined with mucous membranes.

Other examples include the respiratory , excretory, and reproductive tracts. Serous membranes line body cavities that do not open directly to the outside, and they cover the organs located in those cavities. Serous membranes are covered by a thin layer of serous fluid that is secreted by the epithelium.

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. Epithelial membranes are formed from epithelial tissue attached to a layer of connective tissue. There are three types of epithelial membranes: mucous, which contain glands; serous, which secrete fluid; and cutaneous which makes up the skin. Which of the following lines the body cavities exposed to the external environment?

The four types of tissue in the body are epithelial, connective, muscle, and nervous. The meninges is comprised of three layers, the dura mater, arachnoid mater and pia mater.

Key Terms meninges : The system of membranes that envelopes the central nervous system. Connective tissue membranes : A membrane which does not contain an epithelial cell layer.

Synovial Membrane The synovial membrane or synovium is the connective tissue which lines the inner surface of the capsule of a synovial joint and secretes synovial fluid which serves a lubricating function, allowing joint surfaces to smoothly move across each other. Synoviocytes The intimal cells are termed synoviocytes and are of two types: fibroblastic type B and macrophagic type A. Structure of Synovium Synovial Membrane : A synovial joint showing the location of the synovial membrane.

Meninges The meninges is the system of membranes that envelopes the central nervous system. Dura Mater The dura mater is a thick, durable membrane which lies closest to the skull. Arachnoid Mater The middle layer of the meninges is the arachnoid mater, so named because of its spider web-like appearance.

Pia Mater The Meninges : This figure displays the meninges with respect to the skull and surface of the brain. Authored by : Boundless. Provided by : Boundless. Provided by : Wikipedia. Located at : en. Provided by : Wiktionary. Located at : upload. Provided by : Wikimedia.