Various things can cause a blockage of the bowel. You could have stricture formation, which is a scar tissue band that grows around the path of the organ - restricting the flow of material. Hernias are a common cause of bowel blockage as a part of the intestine protrudes beyond the abdominal wall, pinching the intestine shut. Tumors and other masses also cause bowel obstructions. There could also be intestine twisting, which is a phenomenon with many causes but the obstruction is caused by the intestine being improperly twisted shut. I'm sure there are a lot more reasons for bowel obstruction that I cannot think of right now.
Is it harmful if I have blockage in the jugular veins
Blockage of the pancreatic duct causes nutrient malabsorption.
Sir Mackenzie Bowell had two siblings named Mary Bowell and Sophia Bowell.
Norman Bowell was born in 1904.
Norman Bowell died in 1943.
Alex Bowell died in 1957.
Alex Bowell was born in 1880.
Sir Mackenzie Bowell died because of Pnuemonia.
Blockage by plaques
Sir Mackenzie Bowell was born on December 27, 1823.
Edward L. G. Bowell was born in 1943.
Sir Mackenzie Bowell reached the ripe old age of 93.