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Anatomy & PhysiologyHistology

Connective Elastic Tissue in the Aorta: Which Element Dominates the Media?

Identify elastin in the aortic media and compare it with smooth muscle, collagen, cardiac muscle, and cartilage in the original five-option question.

Question

The most abundant tissue element forming the media of the aorta is:

A. cardiac muscle.

B. smooth muscle.

C. collagen.

D. elastin.

E. cartilage.

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Evidence boundary

This is Question 1 on SIU’s Cardiovascular and Lymphatic Systems self-assessment page, whose option D is “elastin.” It is a qualitative introductory tissue-identification question, not a quantitative measurement of tissue percentages and not the separate small-muscular-artery question. No slide, stain, magnification, or specimen measurements are supplied or inferred.