A secondary headache is a symptom of a disease that can activate the pain-sensitive nerves of the head. Any number of conditions â varying greatly in severity â may cause secondary headaches. Possible causes of secondary headaches include: Acute sinusitis. Arterial tears (carotid or vertebral dissections)
The fallopian tube is a crucial structure involved in successful reproduction and, like with all structures in the human body, sometimes problems occur that hinder the structure's ability to function properly.
Typically, the sperm swim up to the fallopian tubes of the woman and if her egg is released from the ovary for her time of the month, the egg and sperm join in the fallopian tube and travel down to the uterus and implants itself into the wall there until the fetus is born. + 52 others found this useful.