In all members of the family the ear-bones or otoliths are largely developed, often finely sculptured.
The otoliths of the river-drum are known to Wisconsin boys as "lucky-stones," each having a rude impress of the letter L.
Otoliths or ear-bones not clearly identifiable are found from the Miocene on.
The central apparatus of the nervous system and the otoliths are formed at the aboral pole from a thickening of the epiblast, but the full details of their formation have not been elucidated.
The otoliths go on increasing in number throughout life.
From the floor of the vesicle is suspended a mass of otoliths by four leaf-like bodies known as suspenders.
The otoliths are gradually transported towards the centre of the vesicle (fig.
The otoliths arise from cells at four separate points at the corners of the ciliated plates opposite the rows of paddles (fig.
An endodermal axis is continued through the whole structure, and in one or more of the endoderm cells of the club-shaped body otoliths are always present.
The walls of this vesicle are always much complicated and otoliths of various forms are present in its cavity.
In the case of the open sacks the otolithsappear to be simply stones transported into the interior of the sacks, but in the closed sacks the otoliths, though free, are no doubt developed within the sacks.
As pointed out by Max Schultze, a number of otoliths appears in the vesicle during larval life, and, although such otoliths are stated by J.
That they discharge the former function, Delage was the first to convince himself by experiments with lower animals which on the removal of the otoliths utterly lost their bearings and could no longer regain their normal position.
The vestibule, particularly the part of it known as the sacculus, appeared to me, by reason of the so-called otolithswhich it contains, eminently adapted for being the organ of sensation of forward acceleration or of the position of the head.
There is no doubt whatever that we feel changes of vertical acceleration, and it will appear from the following extremely probable that the otoliths of the vestibule are the sense-organ for the direction of the mass-acceleration.
Two stages in the development of the otocyst can be recognized, the first that of an open pit on a freely-projecting knob, in which the otoliths are exposed, the second that of a closed vesicle, in which the otoliths are covered over.
At the fundus are placed the concrement-cells with their conspicuous otoliths (con) and the inconspicuous auditory cells, which are connected with.
And this naturally suggests the question whether those sense-organs in the invertebrates which contain otoliths may not be regarded with more probability as organs for the appreciation of changes of motion than as auditory organs.
In some forms the otoliths are held in suspension in a gelatinous material.
We shall see, however, that another interpretation of organs containing otoliths is at any rate possible.
I have always felt a difficulty in understanding how the otoliths are set a-dance by auditory vibrations.
Vesicular organs containing otoliths are found near the cerebral ganglia in some of the worms and their relations.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "otoliths" in a variety of sentences. We hope that you will now be able to make sentences using this word.
