MICROANATOMY

EPITHELIUM CONNECTIVE TISSUE SKIN

EPITHELIA GLANDS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which tissue type lines blood vessels because its ultrathin structure allows rapid diffusion of gasses?
A
Stratified Squamous E.T.
B
Simple Columnar E.T.
C
Stratified Cuboidal E.T.
D
Simple Squamous E.T.
Explanation: 

Detailed explanation-1: -Simple squamous epithelium: This type of epithelium typically lines blood vessels and body cavities and regulates the passage of substances into the underlying tissue. Simple cuboidal epithelium: This type of epithelium is typically found in glandular (secreting) tissue and kidney tubules.

Detailed explanation-2: -Capillaries are also made of a single layer of squamous cells and this allows for gas exchange between the alveoli and blood vessels. Each day, approximately 12, 000 liters of air pass through the lungs and are used for obtaining oxygen for the body and expelling carbon dioxide.

Detailed explanation-3: -The simple squamous epithelium provides a smooth surface for the blood to “slide past.” The tunica intima is continuous with the endocardium, makes-up the capillaries and is collectively referred to as the endothelium.

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