Skeletal system vocabulary. CH. 23 THE SKELETAL SYSTEM Flashcards 2022-10-28
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The skeletal system is a vital part of the human body, responsible for providing support and protection to the body's organs and tissues, as well as facilitating movement. The skeletal system consists of bones, joints, and cartilage, which work together to create a strong and flexible framework for the body.
One of the most important parts of the skeletal system is the bones. Bones are hard, calcified structures that provide support and protection to the body's organs and tissues. They also play a crucial role in movement, as they are attached to muscles by tendons, allowing the muscles to pull on the bones and create movement. There are 206 bones in the human body, and they can be divided into four main categories: long bones, short bones, flat bones, and irregular bones. Long bones, such as the femur and tibia, are longer and more cylindrical in shape and are found in the limbs. Short bones, such as the carpals and tarsals, are smaller and more cube-shaped and are found in the wrists and ankles. Flat bones, such as the ribs and sternum, are thin and flat and are found in the chest and shoulder blades. Irregular bones, such as the vertebrae and pelvis, are more complex in shape and are found in the spine and pelvis.
Joints are the areas where two or more bones meet, and they allow for movement between the bones. There are three main types of joints: fibrous, cartilaginous, and synovial. Fibrous joints, such as the sutures in the skull, are held together by fibrous tissue and do not allow for much movement. Cartilaginous joints, such as the intervertebral discs in the spine, are held together by cartilage and allow for limited movement. Synovial joints, such as the knee and elbow, are the most common type of joint and are characterized by a cavity filled with synovial fluid, which allows for smooth, fluid movement.
Cartilage is a smooth, elastic tissue that covers the ends of bones at joints and helps to absorb shock and reduce friction. There are three main types of cartilage: hyaline cartilage, fibrocartilage, and elastic cartilage. Hyaline cartilage, which is found in the joints and respiratory system, is the most common type of cartilage and is smooth and glossy in appearance. Fibrocartilage, which is found in the intervertebral discs and knee meniscus, is tougher and more resistant to wear and tear. Elastic cartilage, which is found in the external ear and larynx, is more flexible and elastic than other types of cartilage.
The skeletal system also includes several other important structures, such as ligaments, which are bands of connective tissue that connect bones to other bones, and tendons, which are strong, fibrous cords that connect muscles to bones. The skeletal system also plays a role in the body's defense system, as the bones contain bone marrow, which produces white blood cells that help to fight infection.
In conclusion, the skeletal system is a complex and vital part of the human body, providing support, protection, and movement to the body's organs and tissues. Understanding the vocabulary associated with the skeletal system, including bones, joints, cartilage, ligaments, and tendons, is essential for understanding how the body works and for maintaining good health.
Skeletal System Word Wall Vocabulary
The top right panel shows the medial view. Periosteum - the membrane that is outside the bones that are responsible for supplying them with blood. Also associated with the head are an additional seven bones, including the hyoid bone and the ear ossicles three small bones found in each middle ear. The upward movement of the scapula and shoulder is elevation, while a downward movement is depression. Access for free at MedlinePlus.
In a transverse fracture, the bone has a crack entirely through its width, however, the broken ends are not separated. Osteopetrosis Abnormal condition of porous bones. Department of Health and Human Services. These movements are used to shrug your shoulders. Muscular dystrophy A general term for the group of inherited myopathies that are characterized by wasting and weakness of the skeletal muscle. Introduction to the Skeletal System The skeletal system forms the framework of the body. In addition to providing for support and movements of the body, the skeleton has protective and storage functions.
Labels read from top : lateral condyle, medial condyle, tibial tuberosity, anterior border, interosseous membrane, fibula, tibia, medial malleolus, lateral malleolus, articular surface. This causes an anterior tilt of the pelvis and a pronounced enhancement of the lumbar curve. To learn more about arthritis visit Osteoarthritis Osteoarthritis is the most common form of arthritis and according to the Centers for Disease Control and Prevention CDC , affects over 32. The left panel shows the anterior view from the front and the right panel shows the posterior view from the back. Bureau of Labor Statistics. In this position, the radius and ulna are parallel to each other. For the mandible, protraction occurs when the lower jaw is pushed forward, to stick out the chin, while retraction pulls the lower jaw backward see Depression and Elevation Depression and elevation are downward and upward movements of the scapula or mandible.
Intro to skeletal system complianceportal.american.edu
Labels read from toes : distal, proximal phalanges, distal phalange, middle phalange, proximal phalanx, medial cuneiform, intermediate and lateral cuneiforms, navicular, cuboid, talus, trochlea of talus, calcaneus. The left panel shows the anterior view. In an impacted fracture, the crack zig zags throughout the width of the bone like a lightning bolt. Eversion Foot movement in which the bottom of the foot is turned laterally, away from the midline. Osteosarcoma Malignant tumor of bone.
Osteoblast - Cells that form bone tissue 3. The left panel shows the front view of the vertebral column. Centers for Disease Control and Prevention. National Institutes of Arthritis and Musculoskeletal and Skin Diseases. Ligament - A connective tissue that attaches bones.
It is subdivided into the bones of the skull and the bones of the face. Scoliosis Lateral curvature of the spine. In the limbs, flexion decreases the angle between the bones bending of the joint , while extension increases the angle and straightens the joint see Abduction and Adduction Abduction and adduction motions occur within the coronal plane and involve medial-lateral motions of the limbs, fingers, toes, or thumb. Auditory Ossicles - small bones that serve the function to transmit sound to the ear, that transmit sound from the outer ear to the inner ear. However, the two halves of the bones are still aligned in that the broken edges are still facing each other. Osteocyte: regulates local mineral deposition and chemistry at the bone matrix level.
Autoimmune diseases are disorders in which the immune system overreacts and begins to attack itself. These joints are designed for stability and provide for little or no movement. The radiation dose is low so it is considered a safe diagnostic test MedlinePlus, 2021. Endosteum - Thin vascular membrane on cancellous bone. It protects the internal organs, including the brain, spinal cord, heart, lungs, and pelvic organs. National Institute of Arthritis and Musculoskeletal and Skin Diseases.
Anterior view labels read from top : middle finger, ring finger, index finger, little finger, thumb, phalanges distal, proximal , metacarpals, carpals, ulna, radius. Osteosarcoma and Ewing Sarcomas primarily affect children, teenagers, and young adults. In a comminuted fracture, the bone has several connecting cracks at its middle. Arthroscopy Process of viewing a joint using an endoscope. Test Yourself References Bureau of Labor Statistics. The area where bones meet bones or where bones meet cartilage are called articulations. Labels and the right panel show the side view of the vertebral column.
Rotation can also occur at the ball-and-socket joints of the shoulder and hip. Most bones connect to at least one other bone in the body. Articulations Where two bone surfaces meet. Lumbar Pertaining to the lumbar region of the spine L1 to L5. Osteoporosis A disease characterized by a decrease in bone mass that occurs when the rate of bone resorption exceeds the rate of bone formation. These minerals are important for the physiological processes in the body and are released into the bloodstream when levels are low in the body.