It protects and maintains vital structures in their proper position, provides stability for the body, and bodys shape. Serves as resorvoir for ions such as calcium, phosphorus and magnesium and it houses the hematopoietic connective tissue in which blood cells are formed. Two functional parts. Axial- is composed of the bones of the skull thorax and vertebral column and roms the axis of the body. Appendicular skeleton consists of the bones of the upper and lower extremities, including shoulder and the hip.
They are controlled by the medulla oblongata, which controls involuntary action all throughout the body (Oracle Think Quest, 1996). Just think what it would be like to be in charge of consciously reminding your heart to beat. This is why the heart is an involuntary muscle. Cardiac muscle tissue consists of cylindrical fibers that have cross striations (Thibodeau & Patton, 2008). They have a single nucleus, which helps determine the type of muscle class it is.
In the bicep curl which produces flexion at the elbow, the biceps muscle is the agonist, as seen in the image below. Fixator: is a muscle that stabilizes or fixes a part of the body to which a muscle in the process of moving another part is attached. Function Detail Provide movement The action of muscles allows you to change position and move around. Maintain posture Believe it or not, standing upright is a very difficult thing for the body to do due to the fact that gravity is pulling you down the only reason you stay standing is because of the actions of the muscles. Produce heat The
Engineering of Biomimetic Tendons Tendon tissue is a soft connective tissue which connects muscle and bone allowing movement and increasing joint stability. Tendons are composed of a hierarchical structure of collagen molecules (fibrils, fibre bundles and fascicles) and can be categorised into two types, those that transmit loads (e.g. Achilles and patellar tendons) and those that transmit motions (e.g. flexor tendons). In vivo, tendons support large mechanical loads and because of this, they are frequently injured.
Health & social care level 3 Unit 56 1.1 The anatomy and physiology of the human body explains that muscles are attached to the skeleton. They work like hinges or levers to pull or move particular joints when a muscle contracts, pulling the joint in the direction it is designed to move. Parts of muscles move antagonistically, that is, when one contracts, its opposite member relaxes to allow movement. Muscles can become slack, making movement slower and more difficult. Again, it explains that the human muscles move in command from the brain.
Muscles pull and move the bones at particular joints; this makes the joint move and therefore the body moves. When a muscle contracts, it pulls the bones at a joint in the direction that it is designed to move. With reduced mobility, muscles can become floppy and make movement slower and more difficult, but when muscles are used on a regular basis, they remain firm and move more easily. When supporting moving and positioning activities, it is important to remember that muscles can only move the bones at a joint as far as the joint allows. The Muscle Anatomy (http://anatomy.askthetrainer.com/) The Skeleton system (http://www.faqs.org/health/Body-by-Design-V2/The-Skeletal-System-Design-parts-of-the-skeletal-system.html) Nerve fibres run all the way through the body and send impulses to muscles, which enable the muscles to contract and relax.
The human skeleton Is made up of 206 bones. The functions of the skeleton are to provide support, give our bodies shape, and provide protection to other systems and organs of the body, to provide attachments for muscles, to produce movement Joints A joint is the point where two or more bones meet. There are three main types of joints; Fibrous (immoveable), Cartilagenous (partially moveable) and the Synovial (freely moveable) joint. Fibrous joints Fibrous (synarthrodial): This type of joint is held together by only a ligament. Examples are where the teeth are held to their bony sockets and at both the radioulnar and tibiofibular joints.
It forms tendons and ligaments, provides coverings that support and protect muscle and nervous tissue. The hardest connective tissue, bone, protects organs and provides a framework for movement of muscle. Adipose tissue insulates body and stores lipids. Connective tissue is not very cellular. Its extracellular matrix consists of fibers and ground substance that are made and secreted by different connective tissue.
P2 CORRECTIONS FOR UNIT 5 1. EPITHELIAL TISSUES: can be found on the body surfaces of the skin and the lining hollow organs and cavities. These cell of the epithelial tissues are very tightly packed together can almost make it hard for blood vessels or nerves to grow in between them. These cells are always grounded and flat to a basement membrane. Compound epithelia are made up of several layers of cells and simple epithelia are single layer.
1. Bone is a very active tissue. Please explain the pathway of how the bone cells get nutrients and oxygen from the blood vessels using the following terms: Periosteum, endosteum, lacunae, lamellae, canaliculi, perforating canals, osteon, Haversian canal (central canal) and trabeculae. How the bone gets the necessary nutrients and oxygen it needs is through an array of microscopic tubes and chambers. In compact bones, blood vessels pass through the bones periosteum, the membrane surrounding the bone, and the endosteum through perpendicular channels known as the perforating canals.