Most varicose and spider veins appear in the legs due to the pressure of body weight, force of gravity, and task of carrying blood from the bottom of the body up to the heart. Compared with other veins in the body, leg veins have the toughest job of carrying blood back to the heart. They endure the most pressure.aser treatments last for 15 to 20 minutes. Generally, 2 to 5 treatments are needed to remove spider veins in the legs. Laser therapy usually isnât effective for varicose veins larger than 3 mm (about a tenth of an inch). You can return to normal activity right after treatment.
Sponges are animals of the phylum Porifera (/pÉËrÉªfÉrÉ/ ; meaning pore bearer). They are multicellular organisms that have bodies full of pores and channels allowing water to circulate through them, consisting of jelly-like mesohyl sandwiched between two thin layers of cells.ponge biodiversity and morphotypes at the lip of a wall site in 60 feet of water. Included are the yellow tube sponge, Aplysina fistularis, the purple vase sponge, Niphates digitalis, the red encrusting sponge, Spiratrella coccinea, and the gray rope sponge, Callyspongia sp.
Why, you ask? Well, the term Porifera is actually the scientific name given to the group of organisms known commonly as sponges. But, unlike SpongeBob, living sponges are neither square in shape nor in interest-they are actually a really important and diverse phylum within the animal kingdom.owever, here we will focus on the key features of Porifera: choanocytes and spicules (formed by sclerocyte cells). Choanocytes, also known as collar cells, derive their name from the collar-like base where the flagellum (or tail) protrudes.