Secretions from mammary glands are expelled by the contractile function of:
1. Smooth muscle
2. Skeletal muscle
3. Myoepithelium
4. Epithelio-muscular cell

What type of cell junctions are shown in the given diagram?

1. Tight junctions
2. Adhering junctions
3. Gap junctions
4. Desmosome

The disassembly of which of the following in uterine epithelial cells allows the blastocyst to penetrate between epithelial cells?
1. Tight junctions
2. Adhering junctions
3. Gap junctions
4. Apical cell membrane