Human Reproduction Test - 11

Testis is located in scrotal sac out of the abdominal cavity. Sperm formation require 1-2 degree less temperature than normal body temperature. The process of spore formation is called spermatogenesis.

The glandular tissue of each breast is divided into 15-20 mammary lobes which contain cluster of alveoli. Cells of alveoli secretes milk.

Infundibulum and fimbriae are the parts of fallopian tube (oviduct) through which ovum released from ovary passes towards uterus. Fertilisation of ovum occurs in fallopian tube.

Mons pubis is the anterior most portion of the external genitalia of human females which is fatty area covered with the skin and pubic hair.

• Trophoblasts project chorionic villi into the endometrium to derive nutrition from the uterine wall.
• The uterine tissue, in turn, surrounds it along with the blood vessels.
• These two tissues interdigitate to form the placenta.

• Placenta connects the maternal system to the fetal system.
• It provides nutrients for the fetus.
• It also removes the excretory products that would be harmful to it.
• It also provides a gaseous exchange by providing oxygen and removing carbon dioxide.

Semen passes from the ejaculatory duct to the exterior of the body via urethra. The urethra passes through the prostate glands and ends at the external urethral orifice.

The middle layer of uterus is thick and muscular structure called myometrium that help in exhibiting strong contraction during delivery of the baby.

Development of fetus start from zygote divisions to form embryo. The embryo undergoes multiple divisions to form blastocysts that arrange into layers. The primary layers are ectoderm, mesoderm and endoderm.

• To use hormone as a detector for pregnancy, the hormone should be released only during pregnancy.
• Such hormones are hPL, hCG, and relaxin.
• Progesterone is not specific to pregnancy and hence cannot serve the purpose.