Sand Dollar Dissection || Doves of Peace [EDU] скачать в хорошем качестве

Sand Dollar Dissection || Doves of Peace [EDU]

What’s inside a sand dollar? Well, it’s certainly not sand coins! Find out as you learn how to dissect a sand dollar in this video, which also covers its external and internal anatomy and physiology. In this simple dissection of a sand dollar, you’ll learn various parts of its anatomy, why sand dollars are named that way, and why sand dollars are so flat. Sand dollars are a species of echinoderms that are often collected for their photogenic white exoskeleton. However, did you know that live sand dollars are actually purplish-grey and feel velvety because of thousands of tiny spines? In this video, you’ll learn general information about both sand dollars, which will be tied into their anatomical structures and physiological importance. This dissection lab is for anyone who is curious about sand dollar anatomy, wants to cover sand dollar anatomy for a zoology course, missed the sand dollar dissection during biology class, or just wondered, “what’s that white disc I see on beaches?” The video will teach you how to dissect a sand dollar step by step, and review the external and internal anatomy of the sand dollar. In this video, we’ll cover the following structures: Aboral Oral Anus Test Epidermis Tube feet Spines Food grooves Petaloid Mouth Madreporite Gonads (testes/ovaries) Gonophores Aristotle’s lantern Pharynx Esophagus Stomach Intestine Siphon Ring canal Radial canals Ampullae Teeth Pillars If you want to learn more about sand dollar anatomy, here’s a link to a website with more detailed information, as well as diagrams: http://lanwebs.lander.edu/faculty/rsf... If you have any questions regarding sand dollar anatomy, dissection methodology, or general biology, feel free to leave a comment. We'll try our best to reply. Website: https://www.oh-worm.com Links to images used in video: https://www.amazon.com/Nautical-Crush... https://www.govmint.com/1804-spanish-... https://www.thoughtco.com/sand-dollar... https://commons.wikimedia.org/wiki/Fi... https://www.nhm.ac.uk/our-science/dat... https://www.mun.ca/biology/scarr/Symm... https://www.thoughtco.com/sand-dollar... https://www.blackcormorant.net/2006/0... http://invert-embryo.blogspot.com/2010/ http://courses.washington.edu/mareco0... https://www.researchgate.net/figure/M... https://southernboating.com/destinati...