Identify this airway (marked by the asterisk) Choose from the following: (A) trachea (B) primary bronchus (C) secondary/tertiary bronchus (D) bronchiole (E) terminal bronchiole (F) respiratory bronchiole (G) alveolar duct (H) alveolus
Identify this airway (marked by the asterisk) Choose from the following: (A) trachea (B) primary bronchus (C) secondary/tertiary bronchus (D) bronchiole (E) terminal bronchiole (F) respiratory bronchiole (G) alveolar duct (H) alveolus
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Identify this airway (marked by the asterisk)
Choose from the following:
(A) trachea
(B) primary bronchus
(C) secondary/tertiary bronchus
(D) bronchiole
(E) terminal bronchiole
(F) respiratory bronchiole
(G) alveolar duct
(H) alveolus
Transcribed Image Text:This image depicts a histological slide of lung tissue, stained and observed under a microscope. The lung tissue is characterized by alveoli, the small air sacs crucial for gas exchange. In the image, these appear as clear, open spaces between thin walls of tissue.
### Key Features:
- **Alveolar Spaces**: The large white areas, marked with an asterisk (*), represent the air-filled alveolar spaces. These allow for the exchange of oxygen and carbon dioxide between the lungs and blood.
- **Alveolar Walls**: The thin, purple-stained structures surrounding the alveolar spaces are the alveolar walls, composed of a single layer of epithelial cells. These walls contain capillaries and are important for efficient gaseous exchange.
- **Connective Tissue**: The darker purple areas within the alveolar walls contain connective tissue and are rich in capillaries and other small blood vessels.
Understanding the structure and function of alveoli is essential for studying respiratory physiology and pathology, offering insights into how diseases like emphysema or pulmonary fibrosis can affect lung function.
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