A

B

C

D

E

F

G

H

I

K

M

N

O

P

Q

R

S

T

U

V

X

Z

Ultrasound   A technique using soundwaves for visualizing the follicles in the ovaries and fetus in the uterus, allowing the estimation of size.   Ultrasound scan   Visualising (usually the ovaries) by ultrasound   Unprotected intercourse   Sexual intercourse without using a condom or diaphragm in a treatment cycle   Uterus   The reproductive organ that houses, protects and nourishes the developing embryo/fetus. It is a hollow, muscular structure that is part of the female reproductive tract and is the source of a woman's menses.