Serous fluid is secreted by membranes the line the body cavities, such as the pleura and peritoneum.
A serous fluid is found in all body cavities.
serous fluid
These membranes are called serous membranes as they produce a thin slippery fluid.
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. Serous fluid lubricates the membrane and reduces friction and abrasion when organs in the thoracic or abdominopelvic cavity move against each other or the cavity wall. Serous membranes have special names given according to their location. For example, the serous membrane that lines the thoracic cavity and covers the lungs is called pleura.
The mucous membranes (or mucosae; singular mucosa) are linings of mostly endodermal origin, covered in epithelium, which are involved in absorption and secretion. They line various body cavities that are exposed to the external environment and internal organs. They are at several places continuous with skin: at the nostrils, the lips, the ears, the genital area, and the anus. The sticky, thick fluid secreted by the mucous membranes and glands is termed mucus. The term mucous membrane refers to where they are found in the bodyand not every mucous membrane secretes mucus.Body cavities featuring mucous membrane include most of the respiratory system. The glans penis (head of the penis) and glans clitoridis, along with the inside of the prepuce (foreskin) and the clitoral hood, are mucous membranes. The urethra is also a mucous membrane. The secreted mucus traps the pathogens in the body, preventing any further activities of diseases.
The highly specialized fluid portion of the cell is the plasma.
A specialized function shared by the many cells lining the lungs and the lumen of the gut is increased exchange surface provided by their membranes. Interstitial fluid provides for the exchange of materials between blood and body cells.
Mucus
mucus
These membranes are called serous membranes as they produce a thin slippery fluid.
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. Serous fluid lubricates the membrane and reduces friction and abrasion when organs in the thoracic or abdominopelvic cavity move against each other or the cavity wall. Serous membranes have special names given according to their location. For example, the serous membrane that lines the thoracic cavity and covers the lungs is called pleura.
Te Synovial Membrane
a lubricating fluid resembling the white of an egg, secreted by certain membranes, as those of the joints.
They begin in the very thin membranes that help form cerebrospinal fluid (CSF) and line the brain cavities (ventricles) that contain it
the fluid secreted by the sweat glands is called
The mucous membranes (or mucosae; singular mucosa) are linings of mostly endodermal origin, covered in epithelium, which are involved in absorption and secretion. They line various body cavities that are exposed to the external environment and internal organs. They are at several places continuous with skin: at the nostrils, the lips, the ears, the genital area, and the anus. The sticky, thick fluid secreted by the mucous membranes and glands is termed mucus. The term mucous membrane refers to where they are found in the bodyand not every mucous membrane secretes mucus.Body cavities featuring mucous membrane include most of the respiratory system. The glans penis (head of the penis) and glans clitoridis, along with the inside of the prepuce (foreskin) and the clitoral hood, are mucous membranes. The urethra is also a mucous membrane. The secreted mucus traps the pathogens in the body, preventing any further activities of diseases.
The pericardial fluid acts as a lubricant and reduces friction between the opposing surfaces as the heart beats (contacts). The pericardial fluid is secreted by the pericardial membranes.
A serous membrane lines the body cavities and also covers the organs inside the cavities. The upper cells produce the lubricating serous fluid. This fluid has a consistency similar to thin mucus. There is a connective tissue layer that provides the blood vessels and nerves for the overlying secretory cells, and also serves as the binding layer which allows the whole serous membrane to adhere to organs and other structures.
The four types of membranes are: 1) cutaneous membranes; 2) serous membranes; 3) mucous membranes; and 4) synovial membranes. Mucous membranes are tissues that line body cavities or canals such as the throat, nose, mouth, urethra, rectum, and vagina. Serous membranes line body cavities (peritoneum) and surround organs such as the lung (pleura) and heart (pericardium). The cutaneous membrane is the skin. This membrane is composed of a layer of epithelium over a layer of connective tissue. Synovial membrane is a layer of connective tissue that lines the cavities of joints, tendon sheaths, and bursae (fluid sacs) and makes synovial fluid, which has a lubricating function.