In which of the following structures can you observe cellular junctions?

The inner lining of the vagina is composed of which type of epithelium?

The ciliated columnar epithelial cells in humans occur in

$A$ student was given a sample of tissue. He observes and concludes the following characters.
$(i)$ The cells are composed of a single layer of tall and slender cells.
$(ii)$ Their nuclei are located at the base.
$(iii)$ Free surface may have microvilli.
$(iv)$ It is found in the lining of stomach and intestine.
$(v)$ They help in secretion and absorption. Based on the above features identify the epithelium.

In which one of the following preparations,cell junctions come across most frequently?

Ciliated epithelium in vertebrates is present in