Each Alveolus of the Lung Is a Small Sac with a Wall

question 98

True/False

Each alveolus of the lung is a small sac with a wall of epithelial tissue that is many layers thick,thereby providing structural support for the air sacs.

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Definitions:

Macrophages

Large white blood cells that are part of the immune system, engulfing and digesting cellular debris, foreign substances, and pathogens.

Vitamin K

A group of fat-soluble vitamins essential for the synthesis of proteins involved in blood coagulation and bone metabolism.

Prothrombin

A protein in blood plasma that is converted into active thrombin during coagulation.

Liver

A large, vital organ in vertebrates, involved in numerous metabolic processes including detoxification, protein synthesis, and the production of biochemicals necessary for digestion.