noun
definition
Any of the many small fluid-filled sacs located at the point where a muscle or tendon slides across bone. These sacs serve to reduce friction between the two moving surfaces.
Examples of bursa in a Sentence
In all these cases the female duct bears a bursa copulatrix or receptaculum seminis.
It lodges the copulatory organ, and on its dorsal wall lies the bursa Fabricii, an organ peculiar to birds.
From this an equally slender tube proceeds, which joins its fellow of the opposite side, and the two form a thick, walled tube, which opens on to the exterior within the bursa copulatrix through which the penis protrudes.
There is some reason to believe that this complicated and variable apparatus is used for stabbing the body of another animal and that beginning as a weapon for catching prey it has become modified for hypodermic impregnation and only gradually adapted for insertion into the bursa copulatrix.
From this junction there proceeds an oviduct or " uterus " (paired or single) which before opening to the exterior expands to form a muscular protrusible pouch - the bursa copulatrix.
Amblyomma hebraeum, the bont or variegated tick of the Cape Colonists, infects sheep with the 9porozoon causing "heart-water" sickness, and in Europe sheep are inoculated with the same disease by another tick, Rhipicephalus bursa.
Clinical Findings - localized tenderness over the inflamed bursa.
Medical investigations The best way to confirm the diagnosis is to inject the bursa with a contrast medium and x-ray it.
There is some evidence that hyaluronic acid injections into the subacromial bursa can also help.
Damage can occur to the deep flexor tendon, navicular bursa, or navicular ligaments all resulting in pain and lameness.
The more slender males measure between 10 to 30cm long and have a curved tail with two spicules, but no copulatory bursa.
When the condition called bursitis occurs, the slippery bursa sac becomes swollen and inflamed.
Damage can occur to the deep flexor tendon, navicular bursa, or navicular bursa, or navicular ligaments all resulting in pain and lameness.
Some of the plants used are achillea (yarrow), trillium, geranium, and shepherd's purse (Capsella bursa).
The joint is protected by a small sac of fluid called a bursa.