QQuestionBiology
QuestionBiology
**Question: Correctly label the following anatomical features of the spinal cord.**
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Answer
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Step 1: Identify the different regions of the spinal cord in the image.
The spinal cord can be divided into different regions based on the number of vertebrae it runs through. There are 31 pairs of spinal nerves, and they are labeled as follows: 8 pairs of cervical nerves (C^1 -C8), 12 pairs of thoracic nerves (T^1 -T^12), 5 pairs of lumbar nerves (L^1 -L5), 5 pairs of sacral nerves (S^1 -S5), and 1 pair of coccygeal nerve (Co1). In the given image, we can observe the following anatomical features: - The cervical enlargement (C^3 -T^1 level) is the region where the spinal cord is thickened to give rise to the brachial plexus, which innervates the upper limbs. - The thoracic region (T^1 -T^12 level) is the region where the spinal cord gives rise to the intercostal nerves, which innervate the muscles between the ribs. - The lumbar enlargement (L^1 -S^3 level) is the region where the spinal cord is thickened to give rise to the lumbosacral plexus, which innervates the lower limbs.
Step 2: Label the cervical and lumbar enlargements.
Based on the above information, we can label the cervical and lumbar enlargements as follows: - Cervical enlargement: C^3 -T^1 level - Lumbar enlargement: L^1 -S^3 level
Final Answer
The anatomical features of the spinal cord in the given image can be labeled as follows: - Cervical enlargement: C^3 -T^1 level - Thoracic region: T^1 -T^12 level - Lumbar enlargement: L^1 -S^3 level - Cervical nerves: C^1 -C^8 - Thoracic nerves: T^1 -T^12 - Lumbar nerves: L^1 -L^5 - Sacral nerves: S^1 -S^5 - Coccygeal nerve: Co^1
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