If the basement membrane is cover by several layers of cells it is called stratified epithelium. The cells in a squamous epithelium are thin and flat, and have an irregular shape. A simple squamous epithelium is located in regions where absorption or diffusion takes place. An example of where this can be found is in the lining of the heart and blood vessels. Smooth linings are important here because any irregularity in the lining could cause a blood clot.
Organs Organs are composed of two or more tissues which function together to perform a common task. For example, the heart contains all 4 types of tissues. Sponges and cnidarians do not have organs. Organ systems An organ system consists of two or more organs which perform a specific task. Some organ systems are: the integumentary, nervous, sensory, endocrine, skeletal, muscular, circulatory, immune, digestive, respiratory, excretory, and reproductive systems.
The serous membrane lines the cavities in the body that secrete fluids such as the lungs, heart, stomach, and intestines. The serous membrane is made up of a thin layer or mesothelium covering connective tissue. If the serous membrane got damaged the organs in your body would have a hard time doing their jobs. The fourth and final type of membrane is in charge for surrounding the synovial joints such as the hips, knees, elbows
EPITHELIUM By: Khalid Al-Kraida Anatomy Department College of Medicine KSU INTRODUCTION TO THE CONCEPT OF EPITHELIUM FEATURES OF EPITHELIUM: Epithelium lines the surfaces of the body and is mainly located on the borders between the external and internal environments. Epithelium also lines all the internal body spaces that have a connection with the external environment at some stage. Epithelium is a tissue composed of cells; tightly-bound to each other, with little intercellular substance. There are specializations of the cell membranes of epithelial cells that play roles in maintaining the integrity of the tissue. Epithelium is an avascular tissue and has no integral (direct) blood supply.
What is a Ligament and how does it work? Ligament is a tough band of fibrous tissue that connects bone to bone or bone to cartilage and supports and strengthens joints. The main functions of ligaments are to keep the bones of the skeleton in a suitable alignment and prevent abnormal movements of the joints. What is a Tendon and how does it work? A tendon is tissue that connects muscles to bones.
It is made up of cells closely packed and ranged in one or more layers. This tissue is specialised to form the covering or lining of all internal and external body surfaces. Epithelial tissue that occurs on surfaces on the interior of the body is known as endothelium. Epithelial cells are packed tightly together, with almost no intercellular spaces and only a small amount of intercellular substance. Epithelial tissue, regardless of the type, is usually separated from the underlying
Blood vessels and nerves go into the glands at the hilum and go out into the lobules. There are 3 main types of cells in the major
Neurons receive signals from either the external or internal environment, and transmit them in the form of electrical impulses to other neurons, muscles or glands. There are three types of neurons: sensory neurons, motor neurons, and interneurons. Within the nervous system, where the tissues can be found there are four main nerve groups that link back from the body to the brain through the spinal cord. There are two main systems the peripheral nervous system, which has sensory nerves through out the body with it connects to the central nervous system the spinal cord and brain. Sensory nerves send messages to the glands and the muscles, telling them what to do.
Compare and contrast the functions of each tissue type. Why do some areas of our body have stratified squamous epithelium and other areas have simple squamous epithelium? Epithelial tissues - It protects us, and it absorbs with the stomach and intestinal lining Connective tissues - Support, surround, connect other tissues, Protect organs, Transport fluids and dissolved materials Muscle tissues - Responsible for body movement, Moves blood, and food waste through body’s organs, Responsible for digestion. There are three types smooth, skeletal and cardiac muscle tissues. Nervous tissues - Conducts impulses organs from neurons.
It is divided into three layers. The outer layer is the epidermis. The dermis is in the middle and fat forms the innermost layer. Blood vessels, nerves, hair follicles, oil glands and sweat glands are located in the dermis. Skin is a waterproof, flexible, but tough protective covering for your body.