Annelida - Oligochaeta - Lumbricidae - Earthworm (Lumbricus terrestris). Head end. Digestive system. Relatively simple, straight digestive tract. Small oral cavity opens into larger pharynx. Aquatic species feature everted pharynx; mucus covered muscular disk collects particles onto adhesive pad; earthworm sucks food through. Pharynx opens into narrow tubular esophagus that expands into gizzard, or Lumbricidae's crop
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Details
Creative#:
TOP09143848
Source:
達志影像
Authorization Type:
RM
Release Information:
須由TPG 完整授權
Model Release:
NO
Property Release:
NO
Right to Privacy:
No
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