Ancylostoma

1 – Dorsal nerve
2 – Ventral nerve
3 – Gut cavity (intestine in this section)
4 – Pseudocoelom
5 – Cuticle
6 – Hypodermis (in longitudinal section it is the contractile part of the muscle cell if it is “red.”  The hypodermis is between the cuticle and the contractile part of the muscle.
7 – Somatic muscle (platymyarian)
8 – Nucleus of the intestinal cell
9 – Excretory pore (it is clear and has a “pore” right under it)
10 – Intestine
11 – Eggs (I don’t know why they are just sitting in the pseudocoelom like that)
12 – Ovary
13 –  Ovary that is less mature than 12
14 – Oviduct (maybe)
15 – Lateral alae (these are the eosinophilic, lateral, internal cuticular ridges)
16 – Ova being formed
17 – This is one of the cells of the lateral chord
18 –  Ovijector that the female uses to “squirt” her eggs out
19 – Lateral cord
20 – Esophagus (muscular esophagus)
21 – Buccal cavity  

In blue – this area is the GI tract or pharynx – the pharynx is anterior to the reproductive organs so in this cross section the structure is intestine. 

Cross Section
Longitudinal section

 

Conclusions: 
Adult female nematode – eggs in the pseudocoelom
Very thick cuticle
Platymyarian musculature – “smooth” demarcation from contractile to cytoplasmic portion of the muscle
Large intestine composed of few, multinucleated cells
Eosinophilic lateral cuticular ridge at the lateral chord (the cuticle forms an eosinophilic ridge that buldges into the lateral chord) – this is only seen in Ancylostoma 

Ancylostoma caninum (see color plate 16.2 in Chris Gardiner atlas)

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