AP2 Mastering Ch 23 Respiratory

The nasal cavity, pharynx, and larynx constitute the ________ portion of the airway. sinus conducting respiratory primary exchange

conducting

The nasal cavity is separated from the oral cavity by the internal nares. pharyngeal septum. cribriform plate. soft palate. hard palate.

hard palate.

The ________ branch from the trachea at the carina. segmental bronchi primary bronchi lobar bronchi terminal bronchioles alveolar ducts

primary bronchi

The glottis is a flap of elastic cartilage. the soft tissue that hangs off the end of the soft palate. the opening to the pharynx. the opening to the larynx. part of the hard palate.

the opening to the larynx.

The largest cartilage of the larynx is the ________ cartilage. cuneiform thyroid epiglottic arytenoid cricoid

thyroid

The airway that connects the larynx to the bronchial tree is the bronchus. trachea. alveolar duct. laryngopharynx. bronchiole

trachea.

A pair of ligaments covered by laryngeal epithelium that function in sound production are the extrinsic ligaments. ventricular folds. vocal folds. intrinsic ligaments. intrinsic laryngeal muscles.

vocal folds.

The actual sites of gas exchange within the lungs are the blood air barrier of the alveoli. spaces between the parietal and visceral pleura. interlobular septa. bronchioles. terminal bronchioles.

blood air barrier of the alveoli.

The partial pressure of oxygen in arterial blood is approximately 40 mm Hg. 45 mm Hg. 50 mm Hg. 70 mm Hg. 100 mm Hg.

100 mm Hg.

The following is a list of some airways. What is the order in which air passes through them? 1. lobar bronchus 2. bronchioles 3. alveolar ducts 4. primary bronchus 5. respiratory bronchiole 6. alveoli 7. terminal bronchiole 1, 4, 2, 5, 7, 3, 6 1, 4, 2, 7, 5, 3, 6 4, 1, 2, 7, 5, 3, 6 4, 1, 2, 5, 7, 3, 6 2, 4, 1, 7, 5, 3, 6

4, 1, 2, 7, 5, 3, 6

Roughly ________ terminal bronchioles arise from each segmental bronchus. 6,500 10,000 100,000 3,000 1,500

6,500

The pneumotaxic center of the pons prolongs inspiration. stimulates the dorsal respiratory group. sets the at-rest respiratory pattern. suppresses the expiratory center in the medulla. modifies the rate and depth of breathing.

modifies the rate and depth of breathing.

Which of the following organs is not part of the lower respiratory system? larynx trachea pharynx alveoli bronchi

pharynx

Air passing through the glottis vibrates the vocal folds and produces whistling. ululation. speech. articulation. phonation.

phonation.

The term ________ describes the result from an injury that permits air to leak into the intrapleural space. pleurisy pneumothorax pneumonia emphysema pulmonary edema

pneumothorax

If the volume of the lungs increases, what happens to the air pressure inside the lungs? It increases twice the amount of the increase in volume. It increases and possibly damages the lungs. It remains constant. It decreases. It increases.

It decreases.

When does oxyhemoglobin form during respiration? during external respiration immediately after carbon dioxide enters the blood during internal respiration when the chloride shift occurs during pulmonary ventilation

during external respiration

The term hypercapnia refers to an increase in pH. the cessation of breathing. elevated PO2. elevated PCO2. labored breathing

elevated PCO2.

The C shape of the tracheal cartilages is important because it facilitates turning of the head. the bronchi are also C-shaped. large masses of food can move through the esophagus. large masses of air can pass through the trachea and thus the bronchi. it permits the trachea to pinch shut prior to sneezing.

large masses of food can move through the esophagus.

The larynx, trachea, bronchi, and bronchioles all make up the alveoli of the respiratory tract. upper respiratory tract. respiratory mucosa. lower respiratory tract. internal respiratory tract.

lower respiratory tract.