Membranes that surround yolks

Usage examples of sacs.

Their mournful hooting, made with inflatable skin sacs on their great horny snouts, echoed from the walls of ice to the south.

Dozens or hundreds of shapers clambered among the blocks, bearing bundles and implements and jiggling sacs of liquid.

His main danger was overheating in the unfiltered sunlight of the high air, but his body had a number of mechanisms to compensate, including the capacity to vary the flow of blood in his tremendous wings, and air sacs placed in his body that enabled his internal organs to lose heat.

Bulletlike meteors tore tunnels through the fine caverns of his body, ripping open air sacs, smashing his delicate, light-as-air filigree skeleton, further puncturing his magnificent wings.

Whether they had once been known as provinces or nations or frontiers, the gaping cavities stood like air sacs within a great round lung.

They consist of a group of secreting sacs, terminating at one extremity in a closed tube, while the other opens into a common duct.

These sacs are composed of delicate, membranous tissue, having numerous nuclei on their walls.

The filaments of the auditory nerve penetrate the membranous tissues of these sacs, and also of those suspended at the commencement of the semi-circular canals.

These little sacs are supposed to be the seat of hearing, and to determine, in some mysterious way, the quality, intensity and pitch of sounds.

OVARIAN TUMORS generally consist of one or more cysts or sacs, developed within the ovary, and filled with a fluid, or semi-fluid matter, which is formed in their interior.

In aggravated cases, the seminal sacs are so weakened that the warmth of the bed, friction of the clothing, reading obscene literature, viewing indecent pictures, indulging in lewd conversation, or even being in the presence of women, produces a waste of semen--many times unattended by erections.

It includes all the fungi that have the spores enveloped in delicate sacs called asci.

The exterior surface of the cap is the spore-bearing portion, and the spores are developed in their sacs, but only seen under a microscope.

Discomycetes, fungi that have the spore sacs collected in a flattened disc.

Horrifyingly, her screams excited him, and he felt the tingle of desire explode in the sensitive sacs already beginning to bulge in the roof of his mouth.