An Introduction to the study of zoology, illustrated by the crayfishD. Appleton, 1901 - 371 pagini |
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Pagina 23
... aperture ; but it cannot be seen without forcing aside , not only these external foot - jaws , but a number of other limbs , which subserve the same function of manducation , or chewing and crushing the food . We may pass by the organs ...
... aperture ; but it cannot be seen without forcing aside , not only these external foot - jaws , but a number of other limbs , which subserve the same function of manducation , or chewing and crushing the food . We may pass by the organs ...
Pagina 40
... apertures of the oviducts , are coated with a viscid matter , which is readily drawn out into a short thread . The end of the thread attaches itself to one of the long hairs , with which the swimmerets are fringed , and as the viscid ...
... apertures of the oviducts , are coated with a viscid matter , which is readily drawn out into a short thread . The end of the thread attaches itself to one of the long hairs , with which the swimmerets are fringed , and as the viscid ...
Pagina 41
... apertures of the oviducts , are coated with a viscid matter , which is readily drawn out into a short thread . The end of the thread attaches itself to one of the long hairs , with which the swimmerets are fringed , and as the viscid ...
... apertures of the oviducts , are coated with a viscid matter , which is readily drawn out into a short thread . The end of the thread attaches itself to one of the long hairs , with which the swimmerets are fringed , and as the viscid ...
Pagina 56
... aperture of right bile duct ; lp , lateral pouch ; it , lateral teeth ; mg , mid - gut ; mt , median tooth ; as , œsophagus ; p , pyloric ossicle ; pc . pterocardiac ossicles ; pp , prepy- loric ossicle ; wc , urocardiac process ...
... aperture of right bile duct ; lp , lateral pouch ; it , lateral teeth ; mg , mid - gut ; mt , median tooth ; as , œsophagus ; p , pyloric ossicle ; pc . pterocardiac ossicles ; pp , prepy- loric ossicle ; wc , urocardiac process ...
Pagina 62
... aperture of right bile duct ; cm , constrictor muscles of stomach ; ca , cæcum ; cpm , right cardio - pyloric muscle ; cs , cardiac portion of stomach ; em , extensor muscles of abdomen ; fm , flexor muscles of abdomen ; ga , gastric ...
... aperture of right bile duct ; cm , constrictor muscles of stomach ; ca , cæcum ; cpm , right cardio - pyloric muscle ; cs , cardiac portion of stomach ; em , extensor muscles of abdomen ; fm , flexor muscles of abdomen ; ga , gastric ...
Termeni și expresii frecvente
abdomen abdominal appendages abdominal somite acid alimentary ambulatory limbs animals antenna antennule aperture appears artery arthrobranchiæ Astacine attached basal joint base become blastomeres blood body branchiæ branchial cavity branchial chamber branchial filaments branchiostegite canal carapace cephalic cephalothorax cervical groove chitinous convex corpuscles coxopodite crayfish Crustacea cuticle cuticular division ecdysis ectoderm ectostracum edge endopodite endosternites epiblast epimeral epipodite exopodite exoskeleton external fact fibres food-yelk forceps front ganglion gastrolith gills gives rise green gland hind-gut hypoblast inner lamina lateral less lobes lobster longitudinal male mandibles maxillipede membrane metameres morphological muscles muscular Nauplius nerve nobilis nucleated cells nuclei organs outer ovum pairs plate pleura podobranchiæ portion posterior present procephalic protopodite region ridge rostrum scaphognathite segments seta setæ side somite species spines stem sternal sternum stomach structure substance surface telson tergal tergum terminal thoracic thoracic limbs thoracic somite tissue transverse wall yelk