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.
What role do petals and sepals have in reproduction? Petals are big and brightly coloured to attract insects for pollination. Sepals are green, so they can conduct photosynthesis. Thay make food for the flower. Flowers are the r â¦ eproductive part of a plant because they produce fruit which contains seeds. The sepals also play a major role in protecting the flower during its bud stage.