Which histological layer of the blood vessels is correctly matched with its primary component?
Group of answer choices
- Basal membrane – adipose tissue
- Adventitia – simple squamous epithelium
- Intima – stratified squamous epithelium
- Media – smooth muscle cells
The correct answer is Media – smooth muscle cells.
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Explanation:
- Basal membrane – adipose tissue: This is incorrect because the basal membrane is a thin layer of extracellular matrix that supports epithelial cells, not adipose tissue. Adipose tissue is typically found in the subcutaneous layer or around organs but is not part of the basal membrane.
- Adventitia – simple squamous epithelium: This is incorrect. The adventitia is the outermost layer of blood vessels, primarily made up of collagen and elastin fibers, not simple squamous epithelium. Simple squamous epithelium lines the innermost layer (the endothelium) of blood vessels.
- Intima – stratified squamous epithelium: This is incorrect. The intima is the innermost layer of blood vessels and consists of a thin layer of endothelial cells, which are simple squamous epithelium, not stratified squamous epithelium.
- Media – smooth muscle cells: This is correct. The media is the middle layer of blood vessels and is primarily composed of smooth muscle cells. These muscle cells allow for the regulation of blood vessel diameter, which helps control blood pressure and flow.
So, Media – smooth muscle cells is the correct histological match.
