When the platelets bind to a clot, they release serotonin, where it serves as a vasoconstrictor and helps to regulate hemostasis and blood clotting. Serotonin also is a growth factor for some types of cells, which may give it a role in wound healing.erotonin's presence in insect venoms and plant spines serves to cause pain, which is a side-effect of serotonin injection. Serotonin is produced by pathogenic amoebae, and its effect on the gut causes diarrhea.
The salivary glands are made up of a number of different types of cells. The type of cancer you have is named after the type of cell the cancer started in. This means that your doctor will tell you which salivary gland your cancer started in â the parotid, submandibular, sublingual or minor salivary glands.
Humans have three pairs of major salivary glands. These consist of the parotid glands, submandibular glands, and sublingual glands. The parotid glands are located anterior to the ear, over the angle of the jaw and extending into the upper neck.The submandibular glands are smaller and are located under the jaw.umors of the parotid glands, the largest salivary glands, have only a 20% likelihood of malignancy, whereas tumors of the minor salivary glands have an 80% likelihood of being malignant. The most common type of benign salivary gland tumor is a benign mixed tumor, or pleomorphic adenoma.