Questions: Question 41 (1.5 points) Which part of the vertebral column receives the most stress by bearing most of the weight of the body? A) the lumbar region B) the sacrum C) the cervical region D) the sacral promontory

Question 41 (1.5 points) Which part of the vertebral column receives the most stress by bearing most of the weight of the body? A) the lumbar region B) the sacrum C) the cervical region D) the sacral promontory
Transcript text: Question 41 (1.5 points) Which part of the vertebral column receives the most stress by bearing most of the weight of the body? A) the lumbar region B) the sacrum C) the cervical region D) the sacral promontory
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Solution

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The answer is the first one (A): the lumbar region.

Explanation for each option: A) The lumbar region: This is correct. The lumbar region of the vertebral column, which consists of the lower back vertebrae (L1-L5), bears the most stress and weight of the body. This region supports the upper body's weight and is subject to significant mechanical stress, making it the most robust and largest part of the vertebral column.

B) The sacrum: This is incorrect. The sacrum is a triangular bone at the base of the spine, formed by the fusion of five sacral vertebrae. While it does support some weight and connects the spine to the pelvis, it does not bear as much stress as the lumbar region.

C) The cervical region: This is incorrect. The cervical region consists of the seven vertebrae in the neck (C1-C7). It supports the head's weight and allows for a wide range of motion but does not bear the majority of the body's weight.

D) The sacral promontory: This is incorrect. The sacral promontory is the anterior projecting edge of the first sacral vertebra. It is a specific part of the sacrum and does not bear the majority of the body's weight.

Summary: The lumbar region of the vertebral column receives the most stress by bearing most of the weight of the body.

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