WebJan 1, 2010 · Many animals are equipped with organs that can be everted, a notable example being male copulatory organs. The ability to protrude or evert an organ generally requires protractor and retractor muscles. Male copulatory behaviour of the pond snail Lymnaea stagnalis (L.) involves eversion (protraction) … WebStarfish shows an alimentary ca-I nal extending from oral to aboral side. It shows the following parts. 1. ... This is brought forward by 5 pairs of retractor muscles. The pyloric …
Starfish Dissection Lab
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Starfish regeneration - Wikipedia
WebThe arms and tube-feet are furnished with muscle fibres. The entire body of a starfish is protected by a tough, hard crust containing numerous limy (calcareous) plates called ... it … Webre·trac·tor. ( rē-trak'tŏr, -tōr ), 1. An instrument for drawing aside the edges of a wound or for holding back structures adjacent to the operative field. 2. A muscle that draws a body part … WebMar 17, 2024 · The StarFish™ Scope Rotation Attachment is a rotational control device that easily attaches to the proximal end of the arthroscope, enabling the surgeon to change … cynthia berry md