Biology, 25.08.2020 03:01 Stuckonhomework

What defect of the bony covering of the spinal cord is described by the following: "Spinal cord and spinal meninges are intact, neural arch of L5 and S1 is absent, spine of L5 is absent, median sacral crest associated with S1 is absent; site of defect is covered with skin with a tuft of hair"

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Las causas de los trastornos de la médula espinal son traumatismos, infecciones, bloqueo del aporte sanguíneo y compresión por un hueso fracturado o por un tumor.

Habitualmente, los músculos se debilitan o se paralizan, la sensibilidad es anormal o se pierde, y el control de la función de la vejiga y del intestino puede ser difícil.

El diagnóstico se basa en los síntomas y en los resultados de la exploración física y las pruebas de diagnóstico por la imagen, como la resonancia magnética nuclear.

Si es posible, se corrige la afección que causa el trastorno de la médula espinal.

Con frecuencia se necesita rehabilitación para recuperar el máximo de actividad posible.

La médula espinal es la vía principal de comunicación entre el cerebro y el resto del organismo. Es una estructura tubular, frágil y larga que parte de la base del encéfalo hacia abajo. La médula está protegida por los huesos de la espalda (vértebras) que forman la columna vertebral. Las vértebras están separadas y almohadilladas por discos de cartílago.

Explanation:

Answer from: Quest

answer: carbon 14 can only be used to determine the age of the organisms that were once living, and igneous rocks are non living.

explanation:

carbon 14 dating is used to determine the age of the sample by estimating the amount of carbon 14 present in the sample and then comparing it with a reference standard.carbon 14 is a isotope of carbon which is radioactive and unstable. carbon 14 is assimilated by all plants and animals throughout their life from carbon dioxide. however, one the organisms die they stop this assimilation and the carbon 14 content starts to decrease.by knowing how much of carbon 14 is left in an organism after his death, one can estimate the age of the organism. the materials whose age can be estimated by carbon 14 method are the organic compounds. however, some inorganic compounds such as aragonite shell can also be dated.however, if we consider the igneous rocks it is a non living component which never accumulated carbon 14 in it and thus, we cannot use carbon 14 dating method to estimate its age.

Answer from: Quest

Centriole.centrioles are present in animal cells but are usually absent in plant cells.

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What defect of the bony covering of the spinal cord is described by the following: "Spinal cord and...

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