Identify the types of cell junctions that help to stop the leakage of the substances across a tissue and facilitation of communication with neighbouring cells via rapid transfer of ions and molecules.
Following are the statements about prostomium of
earthworm.
A. It serves as a covering for mouth.
B. It helps to open cracks in the soil into which it can crawl.
C. It is one of the sensory structures.
D. It is the first body segment.
Choose the correct answer from the options given
below.
The ciliated epithelial cells are required to move
particles or mucus in a specific direction. In humans, these cells are mainly present in:
Explanation:
Ciliated epithelial cells help move mucus or particles in a fixed direction. In humans, these ciliated cells line the bronchioles, helping clear inhaled dust, and the Fallopian tubes, helping move the egg towards the uterus. Thus, option 1 (Bronchioles and Fallopian tubes) is correct according to NCERT concepts about ciliated lining in these organs.
ð§ Did You Know?
In the respiratory tract, cilia beat together to push mucus upward toward the throat, a process called mucociliary clearance.
ðĄ NCERT Memory Line:
Ciliated epithelium is present in the Fallopian tubes and in the bronchi/bronchioles, aiding movement of cells or mucus in a specific direction.
