Exocrine gland = a gland that secretes substances into ducts which then leave the. body (i.e. sweat/sebaceous glands) or into a internal space or lumen (i.e. digestive. glands). Exocrine glands are not part of the endocrine system! C. HORMONE = a very powerful substance secreted by an endocrine gland into the.
Belly Button Pain Causes, Treatment of Sharp Navel Pain Below, Above, Around Navel. Sharp belly button pain in the abdomen can be caused by viral and bacterial infections, hernia, appendicitis or even strain during pregnancy. The hurt, soreness and pain can be felt around the navel area, below, above, inside or behind the navel.
Causes Of Abdominal Pain At Nighttime. Pain in the abdomen at night can be due to following causes: 1  Indigestion of food: If you overeat or eat heavy food at night it may cause discomfort and pain in the abdomen after some time.2  It is one of the commonest causes of abdominal pain at night. This usually occurs 3 to 4 hours after you eat your dinner. 2  Kidney stone can cause abdominal pain at night. 3  However, kidney stone can also cause pain during day time. 4  Food poisoning: It is caused when you eat food contaminated with bacteria and viruses.