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THe bladder is sea∣ted in the hypogastri∣um, in the place called pelvis.
Of substance it is membranous: becanse it was to admit large stretching.
The membranes of it are three. The first is from the paeritonaeum: for it is lapped within the reduplication of it.
The second is thicker and indued with many
straight fibres, which Aqua pendens will have to bee a muscle serving for the compression of the bladder, as the sphin∣cter serveth for constri∣ction.
The third and inner∣most is white & bright, of exquisit sense, as they can witnesse who are troubled with the stone.
Within it is covered with a mucous crust, an excrement of the third concoction of the blad∣der. This doth mitigate
the acrimony of the U∣rine.
It is perforat in three parts, to wit, in the sides where the ureters are to let in the urine, and before to let out the u∣rine.
The bladder hath two parts, to wit, the bottom and the neck.
Both these in figure represent a peare.
The bottome is up∣holden by the navell: First, in the middle by the ligament called vra∣chus, which is the cause sometimes that they who have a great stone
in the bladder, com∣plaine of great paine a∣bout the navell.
Secondly, by the um∣bilicall arteries dryed la∣terally.
If the bladder were not suspended, a man going straight up the bottome of the bladder would compresse the neck, and cause difficul∣ty in making of water.
In man it lyeth be∣tweene the os pubis and the intestinum rectum. In women between the neck of the matrix and os pubis.
The bladder of man
differeth from the blad∣der of beasts in two things. First, the blad∣der in man is couched within the redoplication of the peritonaeum, but in beasts it is loose, and onely is tied to the inte∣stinum rectum.
Secondly, the bladder of man hath fat with∣out; but the bladder of beasts none.
In it stones are promptly engendered, because the heat of it is compact: So red hot iron burneth worse than the flame of fire.
There is a great con∣sent
betweene the blad∣der and kidnies. So that in diseases of the kidnies, difficulty in making of water some∣times happeneth: The causes of this consent are two.
First, the communion of office, for both serve for the excretion of u∣rine.
Secondly, the simili∣tude of substance; for both the inside of the kidnies, and the blad∣der are membranous.
One thing is to be no∣ted, that a bladder is be∣stowed onely upon such
creatures as have bloudy lungs, and the hotter the lungs are the bigger the bladder is.
So man according to his stature, hath of all li∣ving creatures the big∣gest bladder. According to Aristot. lib. 1. Histor. Animal. Because the bladder is of a cold tem∣perature; therefore in deadly diseases of it, sleepinesse oppresseth the patient, according to Hippoc. 6. epidem.
In the neck onely the muscle sphincter doth of∣fer it selfe to be conside∣red: whereof read in
the doctrine of mu∣scles.
It hath veins and arte∣ries called Hypogastricae, implanted on every side of the neck, which are immediatly divided in∣to two branches; wher∣of the one is bestowed upon the bottome; but the other upon the neck.
It hath remarkable nerves; partly from those of the sixth conju∣gation, which passe by the roots of the ribs, partly from those which spring last from os sa∣crum.
The use of the blad∣der is to containe the u∣rine, like a chamber pot, untill the time of excretion come when the bladder is full.
Its place.
Its substance
Its mem∣branes.
Its fibres.
Its crust.
Its perfora∣tion.
Its parts.
Its figure.
How it is upholden.
Why mans bladder is snspended.
Its heat in man and woman.
How the bladdes of man diffe∣reth from the bladder of beasts.
Why stones are ingendered in it.
Why there is a consent between the bladder and kidnies
An observa∣tion.
Why the bladder in man is big.
The muscle sphincter.
Its vessels.
Its nerves.