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Is Sarcomere and sarcolemma the same thing?
sarcomere and sarcolemma are two different things. a sarcomere is between two d zisks of a myofiber (muscle fiber). a sarcolemma is a plasma membrane. there are many sections of sarcomere under the layer of sarcolemma.
What is a way a mineral appears?
Minerals appear in many different ways. Opaque minerals do not allow light to pass through them. Isotropic minerals allow light to pass through it the same way no matter how the mineral is held. Anisotropic minerals reflects light depending up how the grains lay.
Explain why the properties of polycrystalline materials are often isotropic?
Most polycrystalline materials consist of randomly arranged crystals or "grains." Although individual grains have different orientations and behave anisotropically by themselves, at a larger scale the material behavior is determined by the sum of many grain orientations, and the bulk material acts in an isotropic manner. There are some notable exceptions to this generalization. If the crystals or grains in a solid material are all aligned in the same or similar directions (called "columnar" orientation of grains), as is the case in some turbine blades, the crystal will exhibit anisotropic behavior.
What are the types of enhacements in image processing?
many filters are available. some are bilateral,trilateral, anisotropic,median etc
What are the Different types of filters in image processing?
many filters are available. some are bilateral,trilateral, anisotropic,median etc
Definition of linear isotropic?
Linear isotropic refers to a material or system that exhibits uniform properties in all directions. This means that physical properties, such as conductivity or elasticity, do not vary with direction within the material. It is a key assumption in many engineering and physics analyses for simplifying calculations.
What is basic unit of a muscle?
sarcomeresSarcomereSarcomeresThe functional unit of a skeletal muscle is called a sarcomere. Hole's Anatomy 12th edition, pg 287 states: "Muscle fibers, and in a way muscles themselves, are basically collections of sarcomeres, discussed later in this chapter as the functional units of muscle contraction."sarcomere.
What makes a muscle?
A muscle is made of many cylindrical muscle fibers. The many fibers are bound together with connective tissue. Nerves and blood vessels (arteries and veins) run along the connective tissue.In every muscle fiber, there are thick filaments, made of the protein myosin, and thin filaments, made of the protein actin. The filaments overlap to form the sarcomere, a part of the muscle. Myosin has little heads that attach to actin, and pull on it. This is when the sarcomere contracts, and when all of the sarcomeres of a muscle contract, the entire muscle contracts.
What happens to a sarcomere when muscle length changes?
1. Arrangement of thick and thin filaments: In each sarcomere two sets of actin filaments extend partway toward the center. The myosin filaments are arranged such that they partially overlap the actin filaments. Myosin heads on each side point away from the center of the sarcomere.2. During contraction, the interaction of myosin heads with the actin filaments pulls the thin filaments toward the center of the sarcomere. The actin and myosin filaments slide past each other.3. Cross-bridges = attachement betwn myosin heads and binding sites on actin filaments.4. When a muscle cell is stimulated, myosin heads are energized by ATP. They attach to adjacent actin filaments, and tilt in a short "power stroke" toward the center of the sarcomere. Each power sroke requires an ATP. With many power strokes in rapid succession, the actin filaments are made to slide past the myosin filaments.
How many sarcomere in a muscle cell?
There are unknown amounts of fibers (fibre) in muscles
What is a muscle made from?
A muscle is made of many cylindrical muscle fibers. The many fibers are bound together with connective tissue. Nerves and blood vessels (arteries and veins) run along the connective tissue.In every muscle fiber, there are thick filaments, made of the protein myosin, and thin filaments, made of the protein actin. The filaments overlap to form the sarcomere, a part of the muscle. Myosin has little heads that attach to actin, and pull on it. This is when the sarcomere contracts, and when all of the sarcomeres of a muscle contract, the entire muscle contracts.
Why do same cells contain many mitochondria?
Skeletal muscle cells, for instance, contain many mitochondria because the energy consumed in the contraction of the sarcomere is enormous. Skin cells, for instance, contain much less mitochondria as the cellular work the need to do is minimal compared to skeletal muscle cells.
