what is a meniscus in chemistry
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Water Meniscus What is a meniscus? A meniscus is a curve in the surface of a molecular substance (water, of course) when it touches another material. With water, you can think of it as when water sticks to the inside of a glass. Adhesion is responsible for a meniscus and this has to do in part with water's fairly high surface tension.
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Tear of meniscus In sports and orthopedics, a tear of a meniscus is a rupturing of one or more of the fibrocartilage strips in the knee called menisci. When doctors and patients refer to torn cartilage in the knee, they actually may be referring to an injury to a meniscus at the top of one of the tibiae.amage to the meniscus is due to rotational forces directed to a flexed knee (as may occur with twisting sports) is the usual underlying mechanism of injury. A valgus force applied to a flexed knee with the foot planted and the femur rotated externally can result in a lateral meniscus tear.
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- The phenomenon is called surface tension. Now drop a Mentos into the soda. The gelatin and gum arabic from the dissolving candy disrupts the water mesh, so it takes less work to expand bubbles.
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Meniscus Tear of the Knee Overview of Meniscus Tear. The meniscus is a piece of cartilage that provides a cushion between your thighbone (femur) and shinbone (tibia). There are two menisci in each knee joint. They can be damaged or torn during activities that put pressure on or rotate the knee joint. Taking a hard tackle on the football field or a sudden pivot on the basketball court can result in a meniscus tear.
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Complex Meniscus Tears Injuries The menisci are c-shaped pads located on the outer (lateral) and inner (medial) of the knee. This meniscal pad sits on top of the tibia bone and forms a concave surface for the rounded ends of the femur bone to rest on. This meniscus acts like a suction cup to hold the tibia and femur bones together in the joint.
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- Meniscal Tears and Other Knee Cartilage Injuries. In the knee, there are areas of cartilage tissue which act like shock absorbers in the joint - these are called menisci. There are also areas of cartilage covering the ends of the long bones at the knee joint - these are called articular cartilages.
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How to Read a Meniscus in Chemistry Measure the meniscus at eye level from the center of the meniscus. In the case of water and most liquids, the meniscus is concave. Mercury produces a convex meniscus.
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Meniscal Tear Definition. A meniscal tear is a tear in the meniscus, a shock-absorbing structure in the knee. There are two menisci (plural of meniscus) in each knee, one on the inside (medial), and one on the outside (lateral). Torn Meniscus.
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Q & A: Why does water curve, and what is a meniscus? Glass molecules also happen to be polar. Again, since polar molecules like to stick together, the water in a glass tube will actually tend to stick to the sides of the tube! You can see this at the top of the graduated cylinder, where the water will slightly creep up the sides and form a curve, which is the meniscus.
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- Torn meniscus facts. 1  The knee is the largest joint in the body. 2  Cartilage within the knee joint helps protect the joint from the stresses placed on it from walking, running, climbing, and bending. 3  The medial and lateral menisci are two large C-shaped cartilages that are positioned on the top of the tibia.
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Popular Study Materials from Chemistry 2046 (1) liquid has a strong cohesive forces (2) the liquid level will be lower in the cap. when inserted into the bowl (3) the behavior or the liquid is driven by strong interactions w/ the cap. (4) the liquid will have a convex meniscus as it moves up the cap.
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- A catalyst is a substance which speeds up a reaction, but is chemically unchanged at the end of the reaction. When the reaction has finished, you would have exactly the same mass of catalyst as you had at the beginning.
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Menisci of the Knee Joint In the knee, the crescent-shaped menisci are positioned between the ends of the upper (femur) and lower (tibia) leg bones. The menisci protect the joint surface and absorb the shock produced by activities such as walking, running, and jumping. By Healthwise Staff.
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- Meniscus Tear • Knee Cartilage. Introduction. The menisci are cartilage structures in the knee joint that. act as shock absorbers between the bones. The menisci. can be injured during twisting motions used for sports. Some tears in certain parts of the meniscus may heal.
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- 1 Meniscus tears. 2  The meniscus is a rubbery C-shaped disc that cushions your knee and acts as a shock-absorber. 3  It also helps spread weight evenly so your bones don’t rub together. 4  Tears to the meniscus are often caused by sudden twisting or other things you might do while playing sports.
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- The medial meniscus and lateral meniscus are specialized structures within the knee. These crescent-shaped shock absorbers between the tibia and femur have an important role in the function and health of the knee.
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Can A Meniscus Tear Heal? The meniscus is a “C”-shaped cartilage disk in the knee. There are two menisci within each of our knees. A normal meniscus serves a very important role as a shock absorber and as a stabilizer.
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Torn Meniscus A torn meniscus is damage from a tear in the cartilage that is positioned on top of the tibia to allows the femur to glide when the knee joint moves. Tears are usually described by where they are located anatomically in the C shape and by their appearance (for example, bucket handle tear, longitudinal, parrot beak, and transverse).
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Introduction A meniscus is a type of cartilage that exists in your knee joint. There are two menisci in your knee; each rests between the thigh bone (femur) and shin bone (tibia). The meniscus is made of tough cartilage and conforms to the surfaces of the bones upon which they rest. One meniscus is on the inner side of your knee--the medial meniscus.
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Medial and Lateral Meniscus Tears The menisci - the medial meniscus and lateral meniscus - are crescent-shaped bands of thick, rubbery cartilage attached to the shinbone (tibia). They act as shock absorbers and stabilize the knee. The medial meniscus is on the inner side of the knee joint. The lateral meniscus is on the outside of the knee. Meniscus tears can vary widely in size and severity. A meniscus can be split in half, ripped around its circumference in the shape of a C or left hanging by a thread to the knee joint.
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Why the meniscus of water is concave and the meniscus of mercury is convex? It can be either concave or convex. Formation of meniscus depends on cohesive and adhesive forces in a liquid. For water, adhesive forces are stronger than the cohesive forces, therefore, water in a container stick to the wall of container and owing to the capillary action rises a little bit and form concave meniscus.
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- A meniscus occurs because of surface tension in the liquid and must be read at eye level. For a concave meniscus, the correct volume will be read at the bottom of the curve. For a convex meniscus, the opposite is true and the correct reading will be at the top of the curve.
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- A meniscus tear is a common injury to the cartilage that stabilizes and cushions the knee joint. The type of the tear can determine whether your tear can be repaired. Radial tears sometimes can be repaired, depending on where they are located.
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What is The meniscus composed of? Meniscus is not composed of anything its a physical properties due to surface tension of liquids. It is dependant on the: cohesive forces - binds similar molecules together. adhesive forces - bind a substance to a surface.
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- The meniscus is a circular shaped disc of cartilage tissue. There are two menisci (plural of meniscus) in the knee – one on the inside, called the medial meniscus, and one on the outside, called the lateral meniscus. Their main function is to act as shock absorbers in the knee, helping to reduce wear and tear on the joint.
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- From the 250mL beaker, transfer a little less than the volume of water listed for the glassware. from Table 2. Use a plastic disposable pipette to add the water drop-wise until the bottom of the. meniscus is on the line that corresponds to the volume listed in Table 2.