Exam 18: The Respiratory System

External respiration is another name for breathing.

Which of the following is NOT a structure associated with the lungs?

Which of the following is NOT part of the respiratory membrane?

All of the following decrease the rate of gas exchange during external respiration EXCEPT

In order for inspiration to occur, the volume of the thoracic cavity needs to be increased.

Nerve impulses travel from the active dorsal respiratory group of the respiratory center to the diaphragm via the

Rhinitis is the scientific name for a "nose job."

During inspiration, the diaphragm contracts and flattens leading to a volume increase and pressure decrease in the thoracic cavity. Expiration involves the reverse process in which the diaphragm relaxes leading to a volume decrease and pressure increase in the thoracic cavity.

List the sequence of passageways that inhaled air follows as it moves through the conducting zone of the respiratory system.

Which of the following regions of the bronchial tree divides to form multiple alveolar ducts?

The nasal cavity connects to the pharynx through two openings called the

Most oxygen in the blood is transported as

Which of the following conditions is necessary for air to enter the lungs during inspiration?

The amount of air left in the lungs after a normal expiration, labeled D in the spirogram, is called the

The mucous membrane lining the larynx forms two pairs of folds.

Painful or labored breathing is referred to as

Which of the labeled steps in the diagrams involve contraction the diaphragm?

The total lung capacity equals

The breathing rate is controlled by the respiratory center that consists of a group of neurons located in the

Under resting conditions, the basic rhythm of breathing is controlled by the