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.
cyst
The amniotic sac is the membranous fluid filled bubble in which the developing foetus is suspended in utero.
Peri 'cardial or Pericardium, is the membranous sac enclosing the heart.
Golgi Bodies
The membranous sac that contains catalase is called a peroxisome. Peroxisomes are organelles found in eukaryotic cells that break down various molecules, including hydrogen peroxide, using enzymes like catalase. They also play a role in lipid metabolism and detoxification reactions.
Central vacuoles
The Amniotic Sac.
The amniotic sac is the membranous fluid filled bubble in which the developing foetus is suspended in utero.
Lysosomes
Peri 'cardial or Pericardium, is the membranous sac enclosing the heart.
Golgi Bodies
vesicle/ vacuole
Pericardium suffix is a membranous sac surrounding the heart. A prefix is something that is round.
Mitochondria
its amniotic sac filled with amniotic fluid
Abnormal accumulation of fluid in the scrotal sac is called hydrocele.