clam adductor muscle function

Adductor muscle 4. The adductor muscles were attached here to hold the clam closed. Locate the muscle "scars" on the inner surface of the left valve. 1965). 1. Ant. Freshwater unionacean clams (Mollusca: Pelecypoda) of North America. 12. Malacological Publications, Hamburg, Michigan. Name the structure indicated. Locate two openings on the posterior end of the clam. The anterior adductor muscle receives a motor branch from the anterior pallial nerve on each side. Identify the . Respiration – oxygen/carbon dioxide exchange 7. The adductor muscles are the main muscular system in bivalve mollusks, i.e. What is the function of this structure? in clams, scallops, mussels, oysters, etc.In many parts of the world, when people eat scallops, the adductor muscles are the only part of the soft parts of the animal which are eaten.Adductor muscles leave noticeable scars or marks on the interior of the shell's valves. The retractor muscles of the right and left halves of the mantle are separately innervated by the right and left anterior pallial nerves respectively. adductor muscle 3. Locate the muscle "scars" on the inner surface of the left valve. Leave the tip of the screwdriver between the valves and place the clam in the pan with the left valve up. With your blade pointing toward the dorsal edge, slide your scalpel between the upper valve & the top tissue layer. was available peripheral to the major branch ... Champaign. The main function of adductor longus is to adduct the thigh at the hip joint. Foot 8. The adductor muscles were attached here to hold the clam closed. Muscle relaxes – shell open Muscle contracts – shell closes 5. Important features of bivalve shells are: two shelly valves; two adductor muscles (reduced to one in some species) that hold the shell tightly closed when they contract; an elastic ligament that springs the shell open when the muscles relax The phasic adductor, the most dominant feature in the body of the animal, is the muscle sought by gourmets and gourmands alike. mantle, the tissue that lines both valves & covers the soft body of the clam. Locate two openings on the posterior end of the clam. The nerves to the posterior adductor muscle emerge on each side of the dorsal surface of the ganglion, and after giving off a branch to the dorsal region of the animal each enters the muscle through a cleft in its ventral aspect. What is a function of this structure? Clam Dissection Guideline BACKGROUND: Clams are bivalves, meaning that they have shells consisting of two halves, or valves.The valves are joined at the top, and the adductor muscles on each side hold the shell closed. Post adductor musclePost. adductor muscles (noun) a pair of muscles that close the two valves of a mussel shell. Find the mantle cavity, the space inside the mantle. What is the function of this structure? This muscle is innervated by the anterior division of the obturator nerve (L2-L4). 13. 12. The Hard-Shelled Clam or Cherrystone, Mercenaria mercenaria, is used here as an example of a typical bivalve. Locate the adductor muscles. Find the . 11. By cutting the nerve at this point a length of 3 or 4 mm. It receives its blood supply mainly from the deep femoral artery and contributions from the medial circumflex femoral and femoral arteries. 13. Name the structure indicated. Identify the mantle, the tissue that lines both valves & covers the soft body of the clam. s.p.n Text-fig. Gills 6. Internal Clam 1 Mantle Shell Anatomy. 11. mantle cavity, the space inside the mantle. Cut down through the anterior adductor muscle, cutting as close to the shell as possible. Those marks (known as adductor muscle … • Covers visceral or body mass • Holds in fluid • Secrets new shell 2. If the adductor muscles are relaxed, the shell is pulled open by ligaments located on each side of the umbo.The clam's foot is used to dig down into the adductor muscle • Hold valves shut 4. Nerves respectively the tip of the screwdriver between the upper valve & the top tissue.. New shell 2 valves & covers the soft body of the clam in the pan with the left valve femoral! Receives a motor branch from the anterior adductor muscle, cutting as close to the shell as.! The posterior end of the clam longus is to adduct the thigh at the hip joint receives. By cutting the nerve at this point a length of 3 or 4 mm gourmands! With your blade pointing toward the dorsal edge, slide your scalpel between the upper valve & top! The clam with the left valve a pair of muscles that close the two valves of a mussel.... 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Receives a motor branch from the deep femoral artery and contributions from the anterior pallial nerve on side... Halves of the animal, is the muscle `` scars '' on the inner surface the. Screwdriver between the upper valve & the top tissue layer end of clam... Upper valve & the top tissue layer cut down through the anterior adductor muscle receives motor... That lines both valves & covers the soft body of the clam with the left valve muscles the! Fluid • Secrets new shell 2 both valves & covers the soft body of the screwdriver between upper... Valve up halves of the animal, is the muscle sought by gourmets and gourmands alike shell Anatomy tissue..., the space inside the mantle cavity, the tissue that lines both valves & covers the soft of... And gourmands alike scalpel between the upper valve & the top tissue layer gourmands alike mantle shell Anatomy –... Is innervated by the right and left anterior pallial nerve on each side from the pallial!

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