Phylum Porifera Essay - 1062 Words.
The digestive system, also known as “systema digestorium”, or the gastrointestinal system, is composed of the digestive tract organs plus the digestive adnexal glands. The digestive tract is composed of the mouth, pharynx, esophagus, stomach, small intestine (duodenum, jejunum, ileum), large intestine (caecum, colon, rectum) and anus.
The lungs are sponges that fill with air, and fill every inch the surrounding thoracic cavity. The lungs contain lobes. The lobes divide each lung, and the right lung being bigger has more lobe divisions. The pulmonary veins enter here and exit here as well. Inside the lungs are clusters of air sacks that are called alveoli. The alveoli are part of the bronchioles that enter each lung. The.
Sponges are characterized by the possession of a feeding system unique among animals. Poriferans don't have mouths; instead, they have tiny pores in their outer walls through which water is drawn. Cells in the sponge walls filter goodies from the water as the water is pumped through the body and out other larger openings. The flow of water through the sponge is unidirectional, driven by the.
The small intestine is a 600cm long tube, and does the most absorption in the whole digestive system through little finger like sponges called villi. Villi have capillaries located through them that absorb nutrients then leak the nutrients into the bloodstream. The nutrients are leaked into the bloodstream because cells need nutrients to be able to do their jobs for the body. Nutrients and.
Porifera MCQ (Multiple Choice Questions and Answers) A) Protozoology B) Parazoology C) Nematology D) Helminthology Answer: B A) Water vascular system B) Canal system C) Circulating system D) None of the above Answer: B A) Incurrent canals B) Radial canals C) Excurrent canals D) Spongocoel Answer: C A) Thesocytes B) Pinacocytes C) Choanocytes D) Archaeocytes Answer: B A) Holozoic B.
Porifera: Sponges. STUDY. Flashcards. Learn. Write. Spell. Test. PLAY. Match. Gravity. Created by. tkacheal. Terms in this set (40) Asconoid. Syconoid. Leuconoid. Sycon. Grantia. Spicules. Pinacocyte. They are cells that are capable of contracting to maintain the structure of the sponge. Amoebocyte. They are used in digestion of food particles and the transport of nutrients into other cells.
Phylum Porifera and Cnidaria Phylum Cnidarians Thank you 1. The Cnidarians, such as jellyfish are radially symmetrical with tissues 2. Colonial Cnidarians include corals. 3. Are made up of true tissues but do not have true organs 4. They are Carnivores 5. Can reproduce asexually.