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In embryo sac development, the egg apparatus contains the egg cell and the:
Xiphoid Process
A small cartilaginous extension of the lower part of the sternum, which is usually ossified in the adult human.
Linea Alba
A fibrous structure that runs down the midline of the abdomen, forming the median attachment of the abdominal muscles.
Rectus Abdominis
A long muscle of the abdomen whose contraction results in flexion of the lumbar spine or helps in compressing the abdominal cavity.
External Abdominal Oblique
A muscle located in the lateral part of the abdomen, involved in trunk rotation and lateral flexion.
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