The spinal cord in an adult typically ends at the level of the first or second lumbar vertebra (L1-L2 disc). So, the correct answer would be option c. L1-L2 disc.

Here's a step-by-step explanation:

1. The spinal cord is a long, thin, tubular structure made up of nervous tissue, which extends from the medulla oblongata in the brainstem to the lumbar region of the vertebral column.

2. During development, the spinal cord extends the length of the entire vertebral column. However, as a person grows, the bones of the spine grow faster than the spinal cord.

3. By the time a person reaches adulthood, the spinal cord typically ends at around the first or second lumbar vertebra, which is roughly in line with the top of the hips.

4. Therefore, the spinal cord does not extend down to the 1st sacral vertebra or the third lumbar vertebra in a typical adult.

5. So, the correct answer to the question is option c. L1-L2 disc.

Question

The spinal cord in an adult typically ends at the level of the first or second lumbar vertebra (L1-L2 disc). So, the correct answer would be option c. L1-L2 disc.

Here's a step-by-step explanation:

1. The spinal cord is a long, thin, tubular structure made up of nervous tissue, which extends from the medulla oblongata in the brainstem to the lumbar region of the vertebral column.

2. During development, the spinal cord extends the length of the entire vertebral column. However, as a person grows, the bones of the spine grow faster than the spinal cord.

3. By the time a person reaches adulthood, the spinal cord typically ends at around the first or second lumbar vertebra, which is roughly in line with the top of the hips.

4. Therefore, the spinal cord does not extend down to the 1st sacral vertebra or the third lumbar vertebra in a typical adult.

5. So, the correct answer to the question is option c. L1-L2 disc.

Knowee AI · Accepted Answer

The spinal cord in an adult typically ends at the level of the first or second lumbar vertebra (L1-L2 disc). So, the correct answer would be option c. L1-L2 disc.

Here's a step-by-step explanation:

1. The spinal cord is a long, thin, tubular structure made up of nervous tissue, which extends from the medulla oblongata in the brainstem to the lumbar region of the vertebral column.

2. During development, the spinal cord extends the length of the entire vertebral column. However, as a person grows, the bones of the spine grow faster than the spinal cord.

3. By the time a person reaches adulthood, the spinal cord typically ends at around the first or second lumbar vertebra, which is roughly in line with the top of the hips.

4. Therefore, the spinal cord does not extend down to the 1st sacral vertebra or the third lumbar vertebra in a typical adult.

5. So, the correct answer to the question is option c. L1-L2 disc.

Duringthecourseofdevelopmentfrom embryotooldage,thefollowingarepossibleterminationsofthespinalcorda. 1stsacralvertebrab. Thirdlumbarvertebra* c. L1-L2discd. (a),(b)and(c)e. Noneoftheabove

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