At the angles, which vary in elevation, a few puncta are seen.
Valve with quite central, sharp keel, arcuate, without longitudinal fold; keel puncta always evident; frustule narrowed in the middle with more or less marked central nodule.
Angles with small puncta in transverse and longitudinal rows.
Markings of unequal size, mostly larger at the centre, scattered; at the angles, smallpuncta in longitudinal rows.
Surface of the valve with radiating lines of puncta disappearing toward the centre, at which are numerous coarse puncta.
Frustules cylindrical, slender, with two furrows, one on each side of the suture; valve in zone view with fine puncta in longitudinal rows; puncta in valve view scattered.
An inner stratum, with puncta in transverse rows, is apparent.
LINK Frustules usually in twos, not keeled; valve with puncta in longitudinal lines, the puncta of the enveloping zone larger and in transverse rows.
Surface of valve with fine puncta in longitudinal and transverse lines appearing hyaline under medium powers.
Comedo is a disorder of the sebaceous glands, characterized by yellowish or blackish pin-point or pin-head-sized puncta or elevations corresponding to the gland-orifices.
Introducing minute gold probes through the puncta has been much recommended, but in the generality of cases can be of little service.
The puncta are often very small, and it is in general necessary to dilate them by means of the point of a common pin, before any instrument can be passed through them into the sac.
A plan of dilating and rectifying the nasal duct by styles introduced through the puncta has been proposed, but scarcely deserves to be mentioned as a means of cure.
In some instances, the relative position of the puncta lachrymalia is altered by the cicatrices of the eyelids or tarsal cartilages, when the original wound has been imperfectly adapted: hence results an incurable epiphora.
It is seldom that the puncta are obstructed, and consequently the swelling does not attain any great size, the sac being relieved by some of its contents always flowing upwards, after a certain degree of distension.
It was formerly the custom to inject the fluids into the sac; but this is unnecessary so long as the puncta and canaliculi remain pervious, and the permeability of these can be readily ascertained by means of a small probe.
It often attains a very considerable size; and, on account of its propinquity to the lachrymal passages, is accompanied with watering of the eye, the puncta being either involved in the growth, or compressed or displaced by it.
More tears are secreted by association with the irritation of the nasal duct of the lacrymal sack, than the puncta lacrymalia can imbibe.
This animal absorption of fluid is almost visible to the naked eye in the action of the puncta lacrymalia; which imbibe the tears from the eye, and discharge them again into the nostrils.
In Sculpture the terms punctato-striate, or punctato-sulcate, signify that striae or furrows are drawn with puncta in them.
The caruncula lacrimalis is a small round body, frequently entirely or partially black, situated in the inner angle of the eye, and is designed to direct the tears toward the puncta lacrimalia.
The tears are spread over this organ by the reflex movement of the eyelid, called winking, and then collected in the puncta lachrymalia and discharged into the nasal passage.
The catarrhal stage commenced with profuse watery discharge from the nostrils, copious flow of tears with redness of the conjunctiva, itching of the puncta lacrymalia and photophobia.
In less than two minutes the puncta lacrymalia began to itch violently, the right and afterward the left conjunctiva became intensely hyperemic and photophobia and increased lacrymation supervened.
With these increased motions of the puncta lacrymalia those of the excretory duct of the lacrymal gland are associated from their having so perpetually acted together.
Thus when the absorption of the tears by the puncta lacrymalia is much increased by the stimulus of snuff; or of an affecting idea, on the nasal dusts, as explained in Sect.
The puncta lacrymalia or other extremity of the lacrymal sac sympathizes with it (as the two ends of all other canals sympathize with each other).
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "puncta" in a variety of sentences. We hope that you will now be able to make sentences using this word.
