GENERAL HISTOLOGY

Detailed explanation-1: -Collector urchins have a particularly fearsome variety of pedicellariae consisting of stalks topped with biting jaws. The three sections of the jaws open outward like flower petals, each one ending in a venomous fang.

Detailed explanation-2: -Toxopneustes pileolus, commonly known as the flower urchin, is a widespread and commonly encountered species of sea urchin from the Indo-West Pacific. It is considered highly dangerous, as it is capable of delivering extremely painful and medically significant stings when touched.

Detailed explanation-3: -The most dangerous sea urchin is the flower sea urchin (Toxopneustes pileolus). Toxin from the spines and pedicellaria (small pincer-like organs) causes severe pain, respiratory problems and paralysis.

Detailed explanation-4: -Yes. Sea urchins have two types of venomous organs-spines and pedicellaria. Spines produce puncture wounds. Contact with sea urchin spines and their venom may trigger a serious inflammatory reaction and can lead to.

Detailed explanation-5: -Pedicellariae are minute stalked appendages that are found in among the spines of echinoids. They consist of a thin stalk, generally supported by a simple calcite rod, and a tulip-like head which is composed of three (rarely two) valves, each supported by an internal calcitic frame.