QQuestionAnatomy and Physiology
QuestionAnatomy and Physiology
"The actions of the internal obliques include __________.
compression of the abdomen to assist in forced inspiration
compression of the abdomen to assist in forced expiration
compression of the rib cage to assist in forced inspiration
compression of the rib cage to assist in forced expiratio"
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Answer
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Step 1: Analyze the given options and the anatomy of the muscle in question.
The internal obliques are a pair of muscles in the abdominal wall. They are located just inside the external obliques and run in the opposite direction, with fibers running from the lower ribs to the iliac crest and thigh bone (pelvic brim). These muscles help in rotating and stabilizing the trunk, as well as compressing the abdomen.
Step 2: Compare the options with the primary function of the internal obliques.
- Compression of the abdomen to assist in forced inspiration: This is incorrect because the internal obliques contribute to forced expiration, not inspiration. - Compression of the abdomen to assist in forced expiration: This is the correct function of the internal obliques. - Compression of the rib cage to assist in forced inspiration: This is incorrect because the internal obliques do not affect the rib cage. - Compression of the rib cage to assist in forced expiration: This is also incorrect because, as mentioned earlier, the internal obliques do not affect the rib cage.
Final Answer
The correct answer is compression of the abdomen to assist in forced expiration.
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