z3. The walls of the vagina become
engorged with blood and become darker in color.
z
z4. The shaft of the clitoris
increases in diameter (but rarely in length), and there may be a slight tumescence (swelling) of the clitoral glans due to
vasocongestion.
z
z5. The labia minora become engorged with blood and
their size increases
considerably.
z
z6. The labia majora,
which at rest lie over the vestibule, flatten out and retract from the
midline.
z
z