physiological atrophy example

These structures include thyroglossal duct and notochord (Nishimura et al., 2004). These adaptations include hyperplasia, hypertrophy, atrophy, and metaplasia, and can be physiologic or pathologic, depending upon whether the stimulus is normal or abnormal. Symptoms vary, and treatment may include physical therapy, functional electric stimulation, or … What is an example of physiological atrophy? Hypertrophy. This Review discusses the latest findings and emerging concepts related to pathways controlling muscle atrophy in physiological and pathological conditions. For example: an aneurysm can cause pressure on vertebrae, giving atrophy of the vertebrae. Other examples are a trophy of the sex glands, skin, and bones in old people and atrophy of the thymus during puberty. 2)Pathological 1.Starvation 2.Neuropathic atrophy: due to loss of innervation. Skeletal muscle atrophy attributable to muscular inactivity has significant adverse functional consequences. Clinical examples of physiological atrophy include vulvovaginal atrophy and thymic involution. 1)Physiological 1. Atrophy of uterus following child birth 10. 1-13). Muscle atrophy can occur due to poor nutrition, age, and genetics. The act of giving birth. Although some forms of metaplasia are adaptive … Atrophy - decrease or shrinkage in cell size - Can (if sufficient numbers) result in shrinkage of entire organ Example: muscular atrophy after cast is removed Example: sports steroid abuse causes atrophy of penis - Physiologic atrophy - normal process Example: atrophy of thymus during childhood Embryological structures can remain - become pathological Uterus undergoes rapid atrophy after parturition. Physiological atrophy is more common during the early stages of development while pathological atrophy results from lack of workload or use (McCance & Huether, 2019). The cells must reach a new equilibrium at a lower level. Atrophy is of 2 types, physiological atrophy and pathological atrophy Examples of physiological atrophy are the atrophy of thymus in childhood and tonsils in adolescence. Atrophy can occur within the cells where the entire cell begins to decrease in size. A cell can adapt to a certain point, but if the stimulus continues beyond that point, failure of the cell, and hence the organ, can result. Atrophy is the term used to describe the wasting away or reduction in size of a part of the body, ultimately decreasing the function of the affected area. In atrophy, the cell size and the organelles inside the cells are decreased. Other example: deposition of amyloids causes pressure atrophy of cells; Mechanisms of atrophy. Senile atrophy : in old age 11. 3. Undergoes rapid atrophy. The uterus also undergoes atrophy shortly after parturition which is also an example of physiological atrophy. What happens to uterus after parturition? Atrophy of thymus gland 2. thyroglossal duct after birth 3. atrophy of ovaries & uterus after menopause 4. An example of physiologic metaplasia is the squamous metaplasia that occurs in the uterine cervix during the menstrual cycle as the squamocolumnar junction migrates across the transformation zone (Fig. Atrophy is defined as a decrease in the size of a tissue or organ due to cellular shrinkage; the decrease in cell size is caused by the loss of organelles, cytoplasm and proteins. The pathological atrophy prevails in skeletal muscle, cardiac muscle, sex organs and brain. While the initiating physiological event leading to atrophy seems to be the loss of muscle tension and a good deal of the physiology of muscle atrophy has been characterized, little is known about the triggers or the molecular signaling events underlying this process. What is parturition? Give examples. Must reach a new equilibrium at a lower level embryological structures can remain - pathological... 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