Prof. Dr. Reda Mohammed Day Class Lecture Plan

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What is the main function of the respiratory system?

Filtering blood
Conducting air to the lung (correct)
Digesting food
Producing hormones for the body

Which of the following is NOT part of the respiratory (conducting) passages?

Bronchi
Nose
Trachea
Alveoli (correct)

Where is the vestibule located in the nasal cavity?

Behind the larynx
At the base of the skull
Anterior dilated part of the nose (correct)
Near the trachea

What is the main component of the wall of the vestibule in the nasal cavity?

Hyaline cartilage (B) Signup and view all the answers

Which one of the following is NOT a function of the nasal cavity?

Gas exchange (B) Signup and view all the answers

What type of epithelium lines the posterior part of the nasal cavity?

Respiratory epithelium (D) Signup and view all the answers

What type of epithelium lines the Intra-Pulmonary Bronchi?

Pseudostratified columnar ciliated epithelium (A) Signup and view all the answers

What cells secrete serous fluid in the Terminal Bronchioles?

Clara cells (B) Signup and view all the answers

What type of cells are more numerous in the alveoli?

Type I Pneumocytes (D) Signup and view all the answers

What is the composition of the Inter-alveolar Septum?

Connective tissue, phagocytic cells, and blood capillaries (B) Signup and view all the answers

What is the lining of the Alveolar Sacs primarily composed of?

Pneumocytes (C) Signup and view all the answers

What type of epithelium covers the middle and inferior conchae in the respiratory area of the nasal fossa?

Pseudostratified columnar ciliated epithelium with goblet cells (B) Signup and view all the answers

Which area of the nasal fossa is covered by olfactory epithelium?

Superior concha (B) Signup and view all the answers

What is the function of the trachealis muscle in the trachea?

To constrict the tracheal lumen during coughing and forced expiration (A) Signup and view all the answers

Which type of cartilage forms the fibro-cartilaginous layer of the trachea?

Hyaline cartilage (D) Signup and view all the answers

What is the composition of the lamina propria in the trachea?

Contains blood vessels, nerves, and an abundance of elastic fibers (D) Signup and view all the answers

Which structure marks the beginning of the trachea?

Cricoid cartilage (B) Signup and view all the answers

What is the function of surfactant in the alveoli?

To cover the surface of alveolar cells and prevent alveolar collapse (D) Signup and view all the answers

Which type of cells are responsible for engulfing foreign particles like dust or carbon in the lung alveoli?

Dust Cells (D) Signup and view all the answers

What forms the blood-air barrier for the exchange of gases in the lungs?

Cytoplasm of type I pneumocytes (A) Signup and view all the answers

Which type of pneumocytes contain secretory granules with surfactant?

Type II Pneumocytes (A) Signup and view all the answers

What are Heart Failure Cells responsible for engulfing in patients with heart failure?

Red Blood Corpuscles (B) Signup and view all the answers

What is the function of pleural membranes in the respiratory system?

To cover the outer surface of the lungs and internal wall of the thoracic cavity (C) Signup and view all the answers