Exam 23: Respiratory System

Airway obstruction can lead to hypoventilation, which can cause

The involuntary, rhythmic activities that deliver and remove respiratory gases are regulated in the

If someone at sea level is given pure oxygen to breathe, it would cause the oxygen saturation of their hemoglobin

Bronchial arteries carry ________ blood to the tissues of the lung.

Compared to its partial pressure in the atmosphere, oxygen's partial pressure in the alveoli is

Which statement is true regarding secondary bronchi?

At rest, a normal person breathes about ________ times per minute.

These muscles extend from a superior rib inferomedially to the adjacent inferior rib. They elevate the ribs upon contraction, thereby increasing the transverse dimensions of the thoracic cavity during inhalation.

During expiration, relaxation of the diaphragm and external intercostals

Food is normally prevented from entering the nasopharynx by the

Pitch refers to the ________ of sound waves; pitch is determined by the tension produced by ________ laryngeal muscles.

During quiet expiration,

Control of pulmonary ventilation. -In this sagittal section showing the upper respiratory tract, what bone does number 2 indicate?

The alveolar cell that secretes pulmonary surfactant is the

Select all that can bind to the globin portion of hemoglobin. A) Oxygen B) Carbon dioxide C) H⁺ D) Bicarbonate

Which of the following accounts for the loss of functional alveoli in an individual with a lung disease?

The bronchial circulation is a component of the pulmonary circulation.

Exposure to irritants causes mucus production to

The carotid bodies contain ________ chemoreceptors that respond to changes in ________.

Breathing muscles such as the diaphragm are controlled by neurons of the ________ nervous system.