The alveoli are surrounded by capillaries that carry carbon dioxide laden blood from the body and return oxygenated blood back to the body.
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bronchiolesBronchiolesThese are called bronchioles.bronchiolesbronchiolesthis is the wrong answer, The bronchioles divide into smaller and smaller tubes, ending in microscopic branches that divide into Alveolar ducts, which end in several alveolar sacs.Think of it like a bunch of grapes, the aveolar ducts are the stem, the grape clusters represent an alveolar sac, and each grape represent an alveolus.Alveoli is where the oxygen has to reach to begin gas exchanges between air and blood.Bronchioles
The pericardial sac is a double-walled sac that surrounds the heart and contains the pericardial fluid, providing lubrication for the heart to contract and relax smoothly. It helps to protect the heart against infection and inflammation. If the pericardial sac becomes inflamed, it can lead to a condition called pericarditis.
A membrane surrounds a cell...j.t.c
The chorionic membrane is a thin, outermost membrane that surrounds the fetus in the womb. It is composed of layers of cells derived from both the embryo and the mother and plays a role in the exchange of nutrients and waste between the fetus and the mother. The chorionic membrane eventually fuses with the amniotic membrane to form the amniotic sac.
Alveolar sac and alveoli
Pulmonary capillaries
The Scrotum is the "SAC" that holds the testicles
Surfactant
There is no specific term that describes a burst alveolar sac. There is a term for the collapse of an alveolar sac (usually due to insufficient presence of surfactant), and that term is ATALECTASIS.
A fluid-filled sac that surrounds an embryo is called an amniotic sac. This sac contains amniotic fluid, which provides protection and cushioning for the developing embryo.
Alveolus is a single structure in the lungs where gas exchange occurs, while alveolar sac is a cluster of alveoli where multiple gas exchange processes happen simultaneously. Alveolar sacs are made up of multiple alveoli grouped together.
ONE CELL THICK !
amniotic sac
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There is no such thing as an "ovarian sac". The amnion is a membrane building the "amniotic sac" that surrounds and protects an embryo.
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