Where two or more skeletal bones meet (intersect); functions to allow the movement of the individual bones.
A zone of articulation, where a part of an organ (e.g. a leaf or part of an inflorescence) will break off, often swollen and with a constriction groove.
The point of contact between elements of an animal skeleton with the parts that surround and support it.
The mechanisms by which bones are held together. The point where two bones meet, allowing some degree of movement. There are three basic categories of joints: immovable, slightly movable, and freely movable (synovial).
Segment of a stem (as in a cactus), or a plant node (as where leaves join the stem).
The articulation or place of union or function between two or more bones of the skeleton.
A structure at a point where two or more bones join, especially one which allows movement of the bones.
The place where two or more bones come together.
Point where two or more bones meet. A joint may be immovable (fibrous), as those of the skull; slightly movable (cartilaginous), as those connecting the vertebrae; or freely movable (synovial), as those of the elbow and knee. Also called articulation.
An area where two bones come together; categorized into three types: suture, vertebral, and synovial.
The juncture of two bones. Some joints are fixed and immovable, but most have varying ranges of movement. The seven types of joints are the ball and socket (for example, the hip); hinge (for example, the elbow); ellipsoidal (for example, the radius); saddle (at the base of the thumb); pivot (the neck); gliding (for example, the foot); and fixed (the skull).
The point at which two or more bones are connected. The opposing surfaces of bone are lined with cartilaginous, fibrous, or soft (synovial) tissue. The three main classes of joint are diarthrosis (freely movable), amphiarthrosis (slightly movable), and synarthrosis (immovable).
A joint is the articulation point between different parts of the skeleton, whether bone or cartilage. Joints are divided into those which are fixed or relatively fixed (fibrous and cartilaginous joints), and those which allow free movement (synovial joints). In the former, such as the sutures between the bones of the skull, a layer of cartilage or fibrous tissue lies between the bones, binding them firmly together. Amphiarthrodial joints, such as between the vertebral bodies, have a thick disc of fibro-cartilage between the bones. Although the individual joint is capable of very little movement, a series of these makes the spinal column flexible.
The place where two or more bones meet. Some joints are fixed or immobile attachments of bones, while other joints allow the bones to move along each other. A joint usually has a thin, smooth articular cartilage on each bony surface and is enclosed by a joint capsule made of fibrous connective tissue. It is classified as being immovable (synarthrosis), slightly movable (amphiarthrosis), or freely movable (diarthrosis). Synarthrosis is a joint in which the two bones are separated only by an intervening membrane, such as the cranial sutures. Amphiarthrosis is a joint having a fibrocartilaginous disk between the bony surfaces (symphysis), such as the symphysis pubis; or one with a ligament uniting the two bones (syndesmosis), such as the tibiofibular articulation. Diarthrosis is a joint in which the adjoining bone ends are covered with a thin cartilaginous sheet and joined by a joint capsule lined by a synovial membrane, which secretes synovial fluid, a lubricant.
The point at which two bones come together.
The principal and most substantial dish of a typical meal, commonly referred to as the meat course, or the fifth serving in a formal dinner sequence following hors d’oeuvre, soup, fish, and entrée. It derived its name from the customary inclusion of a whole joint of either beef or mutton, which served as the centerpiece of the course.
A joint is where two or more bones meet. Some joints are very flexible, while others are stable or permit limited movement.
In every kind of joint, soft tissues bind the bones together. In immovable joints, like those in the skull, fibrous tissue tightly fastens the bones. Joints in the spine, which are semi-flexible, have bones linked by cartilage, permitting some movement. The joints in our limbs are flexible and are reinforced by robust ligaments. Muscles drive these joints, connecting to the bones through tendons. Additionally, each flexible joint is enclosed in a sturdy, fibrous capsule.
Different kinds of mobile joints facilitate specific movements. Hinge joints, found in the fingers, knees, and elbows, mainly allow for bending and extending. The joint between the first two vertebrae is a pivot joint, which solely permits rotation. Ellipsoidal joints, like those in the wrist, accommodate various movements, excluding rotation. Ball-and-socket joints, present in the shoulders and hips, enable motion in every direction.
Typical joint injuries encompass sprains, which are minor ligament tears, or complete ligament ruptures; damage to the cartilage; and tears in the joint capsules. Such injuries often arise from abrupt twists or forceful movements, commonly during sports, intense exercise, or from a fall. Bone ends can separate (referred to as joint dislocation) or partially displace, usually due to injury, but sometimes they are congenital. On rare occasions, the bone ends can fracture, leading to bleeding within the joint, known as haemarthrosis. Accumulation of fluid in a joint, called joint effusion, is typically caused by synovitis, which is the inflammation of the joint lining.
Arthritis is a primary joint disease characterized by pain, stiffness, inflammation, and joint degeneration. Other joint-related issues include bursitis, which is the inflammation of the fluid-filled sac near a joint; damage or tearing of an intervertebral disc; gout; and bunions.
The point where two or more bones connect in the body, serving to facilitate movement and flexibility.