WebLarval chaetae are long chitinous bristles originating from paired chaetal sacs and are one of the ... Body segments with chaetae in both dorsal and ventral bundles; minute worms ... superficially into 3–16 annuli (Figs. 2a and 31), anterior sucker present consists of four segments: mouth on ventral surface of anterior sucker (Fig. 7 ... WebUsually, the dorsal surface is darker than the ventral surface (though sometimes this is obscured in the preservation process). Lightly rub your finger along the ventral side toward the posterior end of the worm. You should feel a roughness caused by tiny bristles called … Hot receptors start to perceive hot sensations when the surface of the skin … Liver – the liver is the large black/brown multi-lobed organ at the top of the … If you're looking for a way to make biology fun and memorable for your student, … We would like to show you a description here but the site won’t allow us. We would like to show you a description here but the site won’t allow us.
Earthworms
WebLook for the worm’s setae, which are the minute bristle-like spines located on every segment except the first and last one. Run your fingers over the ventral surface of the earthworm’s body. You should be able to feel bristle-like setae used for locomotion 5. Refer again to the diagram of the ventral view of the worm to locate and identify the WebA ventral nerve cord extends the length of the animal and connects to a pair of fused ganglia (mass of nervous tissue) in each segment. The ganglia within each segment … hoto 5 piece tool set
Annelida, Laboratory in Bio 1003
WebOct 10, 2024 · Place the earthworm on its ventral side. (The ventral side is more flattened than the dorsal side.) Using dissecting scissors, cut through the dorsal body wall posterior to the clitellum and continue the incision toward the prostomium. Be careful not to cut too deep or you will slice into the digestive system. WebJul 1, 2015 · The bristles look like horns projecting from either side of the head and are likely used to sense the worm's surroundings as it moves through the water column. Tomopterids are agile swimmers, with... WebLab 7 – Page 17 of 26 Figure 7. Pedipalp with cymbium (left) and tibial hook and cymbium (right) of a male tarentula. 2) Ticks (Class Arachnida) Ticks are among the smallest predators in the animal kingdom. Almost all ticks belong to two major families: (1) Ixodidae or hard ticks and (2) Argasidae or soft ticks.All ticks feed on blood, especially mammals … lindsey buckingham tour 2019