丰富
发表于 2025-3-25 04:29:27
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xanthelasma
发表于 2025-3-25 11:33:00
Dissection of a Crayfish (,), feeding on fish, tadpoles, worms, insects and plants. We can purchase fresh crayfishes from fishing companies supplying restaurants. Alternatively the dissection can be performed on preserved material.
BROW
发表于 2025-3-25 11:41:18
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胎儿
发表于 2025-3-25 19:37:22
Examination of a Hydrahe inner . (Fig. 1.1). A gelatinous connective tissue layer, the . (mesogloea), lies between the two epithelia. The . opens at one end of the coelenteron and marks the oral end. The mouth is at the tip of a process, the . that elevates it above the oral surface. The opposite pole is the aboral end f
restrain
发表于 2025-3-25 20:37:27
Examination of a Planarian no body cavity (acoelomate) and lack an anus. One of their groups is the freshwater triclads (.), or planarians. They are large free-living flatworms which are commonly found on the underside of stones or submerged leaves or sticks in freshwater springs, ponds, and streams. Planarians are mobile an
cacophony
发表于 2025-3-26 01:02:44
Dissection of a Roundworm (,)tremely resistant to chemical treatment. Although it is unlikely, some eggs may survive immersion in preservatives for short periods. To avoid ascariasis (a disease caused by the parasitic roundworm; see life cycle at the end of the chapter), you should keep your hands away from your mouth and nose
使激动
发表于 2025-3-26 04:57:30
Dissection of the Earthworm (,)row large enough to be used for dissection. There are a number of differences in the number and position of the internal organs which may affect the dissection. It is therefore important to identify the specimen to be used and not to assume that it is a . as described here. Earthworms are chiefly no
Trabeculoplasty
发表于 2025-3-26 11:38:14
Dissection of a Snail (,)eal themselves up; they hibernate in winter and aestivate in summer. During these periods giant Ghana snail (. sp.) can be purchased from zoos instead. Different species of snails differ slightly internally. The instructions given here should enable the student to dissect any type of snail. Examine
Alveoli
发表于 2025-3-26 15:03:50
Dissection of a Crayfish (,), feeding on fish, tadpoles, worms, insects and plants. We can purchase fresh crayfishes from fishing companies supplying restaurants. Alternatively the dissection can be performed on preserved material.
主动脉
发表于 2025-3-26 20:39:56
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