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One difference between a gastrovascular cavity and a complete digestive tract?
A gastrovascular cavity is a digestive sac with only a single opening. A complete digestive tract (otherwise known as an Alimentary canal) has two openings (a mouth and anus) between its digestive tubes unlike the gastrovascular cavity in which food is ingested and eliminated through the same opening (example would be hydra)
Do clams have a complete or incomplete digestive tract?
They have complete digestive system.
How many openings do planarians have in their digestive system?
2
What are the 2 digestive glands that are found outside the digestive tract?
There are two types of glands.Two salivary glands and pancreas.
What body system is the anus a part of?
The anus belongs to the digestive system because, it is apart of your colon which is in the GI tract (gastro-intesntine tract).
What type of acid is in the digestive system?
You have the hydrochloric acid there in the digestive tract. That means in the stomach and proximal part of the duodenum. The acid is very strong. The pH can go down to 2.
Do mollusk cells have a nucleus?
No. There are different classes of mollusks. Gastropods (shell-less or single-shelled), Bivalves (2 shells held together by 1 of 2 powerful muscles), and Cephalopods (Small internal shells or no shells at all)
What is the structure of the digestive tract?
The digestive tract is a long, hollow tube that starts at the mouth and ends at the anus. It is made up of several organs, including the esophagus, stomach, small intestine, large intestine, and rectum. These organs work together to break down food into nutrients that can be absorbed by the body.
What are 2 types of movements produced by contractions of the muscularis externa?
The two types of movements produced by contractions of the muscularis externa are peristalsis, which is a coordinated contraction and relaxation of circular and longitudinal muscles to propel food along the digestive tract, and segmentation, which involves the mixing and churning of food within a specific region of the digestive tract for digestion and absorption.
Describe the two important roles of gut movements?
Gut movement is also known as peristalsis which, quite literally means the wavelike muscle contractions of the digestive tract. Peristalsis occurs for two main reasons: 1) To move the food along throughout the digestive tract so as to move it closer and closer to your anus for excretion. 2) To make sure the nutrients are being absorbed from the food as well as exposing it to the digestive juices secreted from your digestive system so that it may be entirely digested.
What are 2 types of excretion?
Excretion is necessary to remove wastes and unusable products from an organism. In humans, the kidneys and the digestive tract (colon) produce these but the lungs and the skin do as well.
How long before gum goes throw your digestive tract?
The exact time varies, but 1-2 days would be typical. (There is essentially no truth to the "7 years" urban legend.)
