Endemic to Madagascar, the common name for this plant is traveler's palm. It's most striking characteristic is its huge, fan-like structure. The leaves of the traveler's palm can grow to 10 feet in length and, when mature, the tree will stand 30 to 60 feet in height.omments. Submit. The island nation of Madagascar, off the southeastern coast of Africa, contains 12,000 plant species, most of them endemic to the island. Ecosystems on the island include tropical moist forests, dry forests, wetlands and coral reefs.
Organs of the Immune System: The Spleen. Among organs that contribute to our immune response, there are two categories: primary lymphoid organs and secondary lymphoid organs. The spleen is a secondary lymphoid organ. Your spleen is found about halfway up your torso in the left abdominal cavity.
It is somewhat flattened, considerably narrower than the gastric surface, and is in relation with the upper part of the anterior surface of the left kidney and occasionally with the left adrenal gland. Like the thymus, the spleen possesses only efferent lymphatic vessels. The spleen is part of the lymphatic system. Both the short gastric arteries and the splenic artery supply it with blood. The germinal centers are supplied by arterioles called penicilliary radicles.