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Updated: May 27, 2025
Where the periosteum has been perforated by pus making its way to the surface, there are defects or holes in the involucrum, called cloacæ. As these correspond more or less in position to the sinuses in the skin, in passing a probe down one of the sinuses it usually passes through a cloaca and strikes the dead bone lying in the interior.
As strong as that urge is, he is too socialized and can't break in. He retreats to his car. He subconsciously pushes in the lever of his umbrella and carries it, compacted, within his hands despite being drenched by rain. He feels the tightening of his sinuses. He is getting ill but he isn't aware of this. He passes a music store.
Although we soon lose it in the mucous membrane of the nose, there is little doubt that in a more filmy form it is spread over the whole of the cavity, and probably over all the sinuses of the face and head. It is, however, so mingled with the mucous membrane, that no power of the lens has enabled us to follow it so far.
When several bones and joints are simultaneously affected, and there are sinuses with mixed infection, amputation is usually indicated, especially in adults. #Tuberculous dactylitis# is the name applied to a diffuse form of the disease as it affects the phalanges, metacarpal or metatarsal bones.
The forehead is generally flat; the upper jaw rather prominent; the frontal sinuses large; the occipital bone is flat, and there is a remarkable receding of the bone from the posterior insertion of the 'occipitofrontalis' muscle to the 'foramen magnum'. It is a peculiar character of the Australian skull to have a very singular depression at the junction of the nasal bones with the nasal processes of the frontal bone.
The first change is due to the deposit of new bone on the periosteal surface; later, there is the shadow of the sequestrum. Healing does not take place until the sequestrum is extruded or removed by operation. In compound fractures, if a fragment dies and forms a sequestrum, it is apt to be walled in by new bone; the sinuses continue to discharge until the sequestrum is removed.
The ulcers and sinuses persist indefinitely, or they heal and then break out again; sometimes the skin becomes infected, and a condition like lupus spreads over a considerable area. Spontaneous healing finally takes place after the caseous tubercle has been extruded; the resulting scars are extremely unsightly, being puckered or bridled, or hypertrophied like keloid.
The hides on such animals are rendered nearly valueless by the holes made by the larvæ. When fully mature they drop to the ground and complete their transformations. The larvæ pass up into the frontal sinuses where they feed on the mucus, causing great suffering and loss. Many other species of animals are infested with their own particular species of bots.
Fuhlrott, the possessor of the skull, was good enough not only to ascertain the existence of the lateral sinuses in their ordinary position, but to send convincing proofs of the fact, in excellent photographic views of the interior of the skull, exhibiting clear indications of these sinuses. "There can be no doubt that, as Professor Schaaffhausen and Mr.
A most remarkable peculiarity is at once obvious in the extraordinary development of the frontal sinuses, owing to which the superciliary ridges, which coalesce completely in the middle, are rendered so prominent, that the frontal bone exhibits a considerable hollow or depression above, or rather behind them, whilst a deep depression is also formed in the situation of the root of the nose.
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