Hyderabad
08048036175
+919848399491
General Lab Supplies by MNC CHEMICALS SURGICALS

Earthworm Dissection

INR 588
In stockcod available
Phone Number

08048036175

Please keep 0 before dialling the number.

Email Address mnc.naveen@gmail.com

Mon-Thu: 10 AM - 2 PM • Fri: 3 PM - 7AM

Address Correspondence Address: Shop No. 20, 2nd Floor, Srirama Tower, Bogulkunta, Telangana

Hyderabad, India, 500001

Description

Earthworm dissection is a hands-on educational activity and anatomical model demonstration that reveals the structure and function of an earthworm’s organ systems, underscoring its ecological adaptations and basic biology.​ External Anatomy Earthworms are segmented (annulated) invertebrates, with a cylindrical, elongated body partitioned by grooves into 100–120 segments.​ The anterior (front) end is characterized by a fleshy bump (prostomium) over the mouth, while the posterior end bears the anus.​ The dorsal (back) side is darker, the ventral (belly) side lighter and flatter.​ The clitellum—thicker, smooth band about a third of the way down—plays a role in reproduction.​ Tiny bristles (setae) on each segment provide traction during movement.​ Dissection Procedure The earthworm is placed dorsal side up and pinned in place.​​ A shallow incision is made from just behind the clitellum forward to the mouth, with care to avoid damaging internal organs.​ Skin flaps are pinned apart to expose the internal cavity and segmented arrangement.​ Internal Anatomy and Organ Systems Digestive System: Visible organs include mouth, pharynx (food passage and muscle contractions), esophagus, crop (temporary food storage), gizzard (grinds food), intestine (digests and absorbs nutrients), and anus.​ Circulatory System: Five pairs of aortic arches (“hearts”) encircle the esophagus, connected by dorsal and ventral blood vessels.​ Nervous System: The ventral nerve cord runs beneath the intestine’s length, connecting segmental ganglia for basic movement control.​ Reproductive System: Seminal vesicles (white, lobed structures), testes, ovaries, and genital pores are visible in anterior segments.​ Excretory System: Nephridia, visible as small tubes on each segment, expel liquid wastes.​ Model Features Educational models are enlarged, vividly colored, and labeled, providing tactile and visual aids for teaching.​ Major organs for digestion, respiration, circulation, nervous system, and reproduction are highlighted with key cards or numbered diagrams.​ Earthworm dissection models and exercises clarify both fundamental biological functions and earthworm ecological importance.​

Model No. N-EM091

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