Twisting or pulling a muscle or tendon can result in a strain. It can also be caused by a single instance of improper lifting or by over stressing the back muscles. A chronic strain usually results from overuse involving prolonged, repetitive movement of the muscles and tendons. In addition, there are several factors that put a person at greater risk for a back strain or sprain, including excessively curving the lower back, being overweight, having weak back or abdominal muscles, and tight hamstrings (muscles in the back of the thighs). Playing sports that involve pushing and pulling—such as weightlifting and football—also increases the risk of a low-back injury. Chronic strains happen slowly over time from prolonged, repetitive overuse of muscles. Chronic strains develop from using the same muscle groups in the same pattern, causing even small stresses to build on one another. Causes of chronic strain include:
Improper body mechanics or using the wrong muscle groups for a task, such as repeatedly lifting heavy objects using your back instead of your legs
Improper sports mechanics or techniques, such as habitually gripping a tennis racket too tightly or an incorrect golf swing
Participation in the same exercises in the same way, day after day
Poor posture
Use of the wrong equipment, such as running shoes without the proper support for your foot type
Include all costs associated with carrying and maintaining inventories. They include costs such as obsolescence, deterioration, storage, inventory taxes, and insurance. ... Also called ordering costs. Include costs of placing order, receiving, pricing, and placing goods in stock; and processing payment.
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You may need to use transfer aids such as a gait belt, a sliding board, or a mechanical lift to help move a person. These transfer aids can help make transfers safer
Answer:
As part of the development of the neural tube, by the sixth week of embryonic development, the brain vesicles are already formed.
Explanation:
The encephalic vesicles correspond to a group of dilations that will give rise to the brain and its related structures.
Around the 4th week of embryonic development, the primary encephalic vesicles are formed, and by the 6th week there will also be secondary encephalic vesicles, for a total of five divisions.
The five encephalic vesicles formed in week 6 of embryonic development are the myelencephalon, metencephalon, midbrain, diencephalon and telencephalon.
- <em><u>myelencephalon
</u></em>: It is the structure that is organized to form the spinal bulb, in addition to the motor nuclei of the cranial nerves (pairs) IX to XII.
- <u><em>Metencephalon</em></u>
: It gives rise to the cerebellum and the protrusion.
- <em><u>Midbrain</u></em>
: It forms important structures such as the Edinger-Westphal nucleus, the wing plates, the tegment - together with the nuclei of the cranial nerves III and IV - and the upper cerebellar pedicles.
- <u><em>Diencephalon</em></u>: gives rise to the Thalamus, hypothalamus and pituitary gland.
- <em><u>Telencephalon</u></em>: originates the structure of each cerebral hemisphere, besides the striated body and its respective divisions in caudate and lenticular nuclei.
