A buccal cavity, a pharynx, an oesophagus and an intestine are always distinguishable.
A crop-like dilatation of the gut and a recurved intestine, embedded in the compact yellowish-brown liver, the ducts of which open into it, form the rest of the digestive tract and occupy a large bulk of the visceral hump. The buccal region presents a pair of shelly jaws placed laterally upon the lips, and a wide range of variation in the form of the denticles of the lingual ribbon or radula.
A gizzard is present in a few forms. The buccal cavity is sometimes armed with jaws.
Also, examine the buccal cavities of the human hookworm Nectar Americans.
B, Buccal ganglia (concerned with the odontophore).
Buccal mass and radular apparatus are present, but ctenidia are entirely wanting.
D, is the neuromere of the second III and IV, Coelom of the-third or buccal somite.
D, Oesophageal ganglion connected with the buccal.
Feeding soft, textured foods tends to reduce mechanical abrasion especially in the buccal surface of the caudal cheek teeth.
In Diplopoda two opisthomeres - that is to say, one in addition to the buccal somiteare united by a fusion of their terga with the terga of the prosthomeres.
In front of the buccal mass is a median cerebral ganglion.
In some Indian and Malay Engystomatids of the genera Callula and Microhyla, the tadpoles are remarkably transparent, and differ markedly in the structure of the buccal apparatus.
In the Gastropoda the muscular tissue of the buccal mass is coloured red by haemoglobin.
Lower canines cross the floor of the oral cavity, from buccal to medial, with the apex located at the caudal mandibular symphysis.
On the floor of the pharynx or buccal mass is a rudimentary radula, which in many species consists of a single large tooth, bearing two small teeth or a row of teeth.
On the whole the facts seem to be against this supposition, though we need not suppose that the gnathobase was very large or the rami undeveloped in the buccal parapodia which were destined to lose their mandibular features and pass in front of the mouth.
One of the most startling discoveries of the decade 1890-1900 was the fact that a number of forms are devoid of both gills and lungs, and breathe merely by the skin and the buccal mucose membrane (20).
Our figure of the nervous system of Aplysia does not give the small pair of buccal ganglia which are, as in all glossophorous Molluscs, present upon the nerves passing from the cerebral region to the odontophore.
Parapod.ia hardly projecting; palps of prosomium forming branched gills; no pharynx or eversible buccal region; no septa in thorax, septa in abdomen regularly disposed.
Remove a semi-circle of bone from the buccal alveolar crest with a small round bur (½ or 1 ).
T h e buccal nerves and ganglia are omitted.
The adhesion of a greater or less number of somites to the buccal somite posteriorly (opisthomeres) is a matter of importance, but of minor importance, in the theory and history of the Arthropod head.
The alimentary canal of the Pectinibranchia presents little diversity of character, except in so far as the buccal region is concerned.
The buccal cavity can be isolated by the short soft palate which produces an extremely tight occlusion across the nasal pharynx.
The buccal cavity contains a sense-organ on the ventral side called the sub-radular organ.
The buccal cavity, as explained above, is a secondary formation around the true mouth, which is at its dursal posterior end.
The buccal glands are arranged in two ?., rows parallel with the molar teeth.
The buccal mucous membrane graft is sutured to the sclera bounded by the insertion of the rectus muscles to create a new ocular surface.
The buccal mucous membrane will be greyish, brown or black in colour, due to the corrosive effects of the acid.
The buccal region is unarmed and not eversible.
The cavity within the head leads into a true buccal cavity situated within the body at the base of the foot.
The four cords are all connected anteriorly with the cerebral commissure which lies above the buccal mass anteriorly.
The labial commissure supplies only the buccal mass and the oesophagus and stomach.
The last three families constitute the sub-tribe Porostomata, characterized by the reduction of the buccal mass, which is modified into a suctorial apparatus.
The mouth leads into the buccal cavity, on the ventral side of which opens the radular caecum.
The paired ctenidia are very greatly developed right and left of the elongated body, and form the most prominent organ of the group. Their function is chiefly not respiratory but nutritive, since it is by the currents produced by their ciliated surface that food-particles are brought to the feebly-developed mouth and buccal cavity.
The proboscis is not the only organ of locomotion, being assisted by the succeeding segment of the body, the buccal segment or collar.
The statement makes it clear that buccal midazolam must be prescribed by a medical practitioner.
The two somites following the mandibular or first post-oral or buccal somite carry appendages modified as maxillae.
There are two chitinous jaws in the buccal cavity, a dorsal and a ventral, which are of specially complicated structure in Cirrodrilus.
They enclose the jaws (j), mouth (M), and opening of the salivary glands (o.·), and so give rise to the buccal cavity.
This buccal sac is provided with a dorsal mandible and a ventral radula.
This delivers nicotine, from a cartridge, for absorption through the buccal mucosa.
This differentiation is not, however, peculiar to the Polychaetes; for in several Oligochaetes the anterior nephridia are of large size, and opening as they do into the buccal cavity clearly play a different function to those which follow.
Thus, in Octochaetus multiporus a large nephridium opens anteriorly into the buccal cavity, and numerous nephridia in the same worm evacuate their contents into the rectum.
Two pairs of glands open into the buccal cavity, and at the junction of pharynx and oesophagus is another pair called the sugar glands.
Two pairs of salivary ducts, each leading from a salivary gland, open into the buccal chamber.
Within the buccal cavity are the two jaws.
You will actually see the fry eyes through the buccal cavity.