Answer :
Final answer:
The sternal portion of the diaphragm is located at T10, the costal portion at T12, and the lumbar portion from L1 to L3, hence the correct answer is option C. Sternal: T10; Costal: T12; Lumbar: L1-L3.
Explanation:
The respiratory diaphragm's lumbar, costal, and sternal sections are situated in various body parts. The xiphoid process of the sternum's posterior side is where the sternal part is joined.
The transversus abdominis muscle interdigitates with the costal part, which is linked to the interior surfaces of the inferior six ribs and their costal cartilages.
The anterior bodies of the upper lumbar vertebrae, notably the L1 to L3 crura, as well as the arcuate ligaments are the sources of the lumbar portion.
Therefore, the correct answer to the question of where are the sternal, costal, and lumbar portions of the respiratory diaphragm located is: c) Sternal: T10; Costal: T12; Lumbar: L1-L3.
