Simple spontaneous pneumothorax is caused by a rupture of a small air sac or fluid-filled sac in the lung
During the follicular phase an immature egg completes its first meiotic division. A follicle is a small, narrow cavity or sac in and organ or tissue.
No. Cardiac muscles are attached to the pericardium - a layer of tissue that surrounds the heart and the Great Vessels. The sac rests on the diaphragm and is connected by various bits of connective tissue to the thoracic cavity.
No, albumin does not move out of the sac. In fact, albumin does not have anything to do with the sac because it does not move.
A membranous sac is, as it says, a sac with a membrane. What it is specifically varies. Bronchi in the lungs are membranous sacs and the amniotic sac on a baby is membranous.
A gastrovascular cavity is a digestive sac with only a single opening. A complete digestive tract (otherwise known as an Alimentary canal) has two openings (a mouth and anus) between its digestive tubes unlike the gastrovascular cavity in which food is ingested and eliminated through the same opening (example would be hydra)
A) Only one opening: they expel undigested material through the mouth.
All cnidarians live in water, have tentacles with specialized stinging cells called nematocysts, and have an internal sac for digestion which is called the gastrovascular cavity.
A jellyfish takes food in through its mouth which is located on the underside if its bell. Food is digested in a sac-like structure called a coelenteron or gastrovascular cavity. Waste material is passed out through the mouth.
Air sac
All cnidarians live in water, have tentacles with specialized stinging cells called nematocysts, and have an internal sac for digestion which is called the gastrovascular cavity.
No a Hydra is non a pseudocoelmate, acoelomate, or eucoelomate. The basic body plan is a sac with central digestive compartment, the gastrovascular cavity. A single opening functions as mouth and anus. There are 2 variations on this body plan: the sessile polyp and the motile medusa
A simple podlike pericarp which contains several seeds and opens along the inner or ventral suture, as in the peony, larkspur and milkweed., A small cavity, tubular depression, or sac; as, a hair follicle., A simple gland or glandular cavity; a crypt., A small mass of adenoid tissue; as, a lymphatic follicle.
A jellyfish takes food in through its mouth which is located on the underside if its bell. Food is digested in a sac-like structure called a coelenteron or gastrovascular cavity. Waste material is passed out through the mouth.
Peritoneal cavity
vesicle ^_~
Vesicle