Question

Microvilli are _____. found in the lungs and are the site of gas exchange microscopic folds where nutrients are absorbed cells in the immune system that attack foreign invaders found in the gallbladder and secrete bile

Answer 1

Microvilli are cylindrical extensions of the plasma membrane that significantly increase the absorptive surface area of intestinal epithelial cells, aiding in nutrient absorption.

Step-by-step explanation:

Microvilli are microscopic folds where nutrients are absorbed. These cylindrical apical surface extensions of the plasma membrane are found on the epithelial cells lining the small intestine, greatly increasing the surface area for absorption of nutrients from digested food.

Each microvillus contains enzymes that are crucial for the final digestion of carbohydrates and proteins. Microvilli form a brush border appearance and with an estimated density of 200 million per square millimeter, they significantly enhance the absorption capacity. Diseases such as celiac disease damage microvilli, leading to a disruption in nutrient absorption.

Answer 2

Cells?
Hope this helps