The Uterus.
No, that's the stomach. The esophagus is a hollow tube with muscular walls.
It is a hollow organ, the walls of which are made of tissue that is lined with muscle.
The large, hollow organs of the digestive tract contain a layer of muscle that enables their walls to move. The movement of organ walls can propel food and liquid through the system and also can mix the contents within each organ. Food moves from one organ to the next through muscle action called peristalsis. Peristalsis looks like an ocean wave traveling through the muscle. The muscle of the organ contracts to create a narrowing and then propels the narrowed portion slowly down the length of the organ. These waves of narrowing push the food and fluid in front of them through each hollow organ.
As with most creatures the feeding organ of an earthworm is the mouth. Located behind the mouth is the pharynx which acts as a suction pump; its muscular walls draw food back.
do cappilaries have muscular walls
As with most creatures the feeding organ of an earthworm is the mouth. Located behind the mouth is the pharynx which acts as a suction pump; its muscular walls draw food back.
Artery
yes capillaries are connected to heart because heart is a muscular organ and the exchange of materials between heart walls and blood occurs through capillaries.
to protrect them
abdominal
That is the small intestine. (The small intestine is actually longer than the large intestine.)
The abdominal cavity.