The red arrow in this picture indicates what structure? (Image Source: Lynch, Patrick. Wikimedia: Creative Commons, Attribution 2.5 Generic, 2006.)

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MCQs on the structure of the human body at the cellular, tissue, organ, and organ system levels. Topics include: the integumentary, skeletal, muscular, nervous, cardiovascular, lymphatic, respiratory, digestive, urinary, endocrine, and reproductive systems.


The red arrow in this picture indicates what structure? (Image Source: Lynch, Patrick. Wikimedia: Creative Commons, Attribution 2.5 Generic, 2006.)<br><img src='https://www.fatskills.com/images2/GradExams/8BC0EF93-3C2D-4D48-A2FE-011D9ACE8B0A.jpg' height='548' width='600'/>