What is muscle physiology?
muscle physiology is the study of muscle function. The muscle is a bunch of fibers that are contracted to the production of heat, posture and movement, either the internal organs or the organism itself. Muscle physiology studies physical, mechanical and biochemical aspects of muscles in development, fiber structure, muscle structure, contraction and building.
The body has three types of muscle: heart, smooth and skeletal. The skeletal muscle is a voluntary muscle or muscles that can be consciously controlled, characterized by stripes or stripes. The skeletal muscle connects to the bones to move the skeleton for purposes such as posture and locomotion. The smooth muscle is an involuntary muscle, marked with a lack of stripes that affects movement in the internal organs. The heart muscle is an involuntary, uneven striped muscle that folds the heart and causes its contraction or beating the heart.
Understanding the physiology of skeletal muscle muscles requires a basic understanding of its structure. Skeletal muscles are usually attached to bones through tendons and oftenThey discover in antagonistic pairs, so when one muscle contraction, the other is prolonged. The muscle itself is formed by a bundle or fascicle long cylindrical cells called muscle fibers. Each fiber contains many stringed structures called myofilaments that sit in sarcoplasm, a fluid similar to the cytoplasm, which is held in Sarolemma or the membrane of the fiber. Myofilaments contain contractile structures called myofibrils whose elements repeat geometrically to create functional units called Sarcomreres.
Each sarcommere contains overlapping thick fibers, composed of myosin molecules and thin philamings, composed of actin, troponin and tropomyosin molecules. The theory of the sliding fiber contraction suggests that during contraction myosin binds to the molecules of the thin fiber, which pulls thin fibers over or under thick fiber. Sarcomre is shortened as a whole, although no element inThe lure actually decreases. The binding of molecules responsible for this contraction is stimulated by release of calcium ions from sarcoplasm. Calcium is released in response to an electrical pulse called action potential sent from neuron to muscle through a neuromuscular synapse.
smooth muscle physiology differs from skeletal muscle physiology, because smooth muscles do not have saromers, which explains the lack of stripes in smooth muscles. Instead, smooth muscle contractors are countered as one unit, with electrical pulses are communicated from the cell to the cell through the GAP intersections. These electrical pulses are communicated by neurons resulting from the autonomic nervous system. Some smooth muscle can be spontaneously closed without stimulus from the neuron due to the presence of pacemaker cells that can crji its own electrical impulses. Like skeletal muscle contractions occur from binding and slipping thick fibers with thin fibers in response to UVCalcium peeling in muscle fiber.
The physiology of heart muscles is similar to skeletal muscle physiology. Heart muscle contracts in response to elevated calcium levels and is also striped; It suggests that it also uses saromers as a contractile unit. Like a smooth muscle and unlike skeletal muscle, the heart muscle may not be innervated in each fiber as it can communicate electrical signals from the cell to the cell. This communication is achieved through intercaled discs, an element unique to the heart muscle.