Chapter 23 A&P study guide

1. The nasal cavity

• 1. has openings for the paranasal sinuses.

• has a vestibule, which contains the olfactory epithelium.

• 1. is connected to the pharynx by the nares.

• 1. has passageways called conchae.

• is lined with squamous epithelium, except for the vestibule.

The larynx

• 1. connects the oropharynx to the trachea.

• 1. has three single and six paired cartilages.

• 1. contains the vocal folds.

• 1. contains the vestibular folds.

• 1. All of these are correct.

1. Terminal bronchioles branch to form

• 1. the alveolar duct.

• 1. bronchioles.

• 1. alveoli.

• 1. respiratory  bronchioles.

During an asthma attack, a person has difficulty breathing because of constriction of the

• 1. trachea.

• 1. bronchi

• 1. terminal bronchioles.

• alveoli

• 1. respiratory membrane

1. During quiet expiration, the

• 1. abdominal muscles relax.

• 1. diaphragm moves inferiorly

• 1. external intercostal muscles contract.

• 1. thorax and lungs passively recoil.

• 1. All of these are correct.

1. The parietal pleura

• 1. covers the surface of the lung.

• 1. covers the inner surface of the thoracic cavity.

• 1. is the connective tissue partition that divides the thoracic cavity into right and left pleural cavities.

• 1. covers the inner surface of the alveoli.

• 1. is the membrane across which gas exchange occurs.

1. Contraction  of  the  bronchiolar  smooth  muscle  has  which  of  these  effects?

• 1. A smaller pressure gradient is required to get the same rate of airflow, compared with normal bronchioles.

• 1. It increases airflow through the bronchioles.

• 1. It increases resistance to airflow.

• 1. It increases alveolar ventilation.

1. During expiration, the intra-alveolar pressure is

• 1. lower than the pleural pressure.

• 1. greater than the barometric pressure.

• 1. lower than the barometric pressure

• 1. unchanged 

1. Normally, which of the following keeps the lungs from collapsing?

• 1. surfactant

• 1. pleural pressure

• 1. elastic recoil

• 1. Both a and b are correct.

1. Immediately after the creation of an opening through the thorax into the pleural cavity

• 1. air flows through the hole and into the pleural cavity.

• 1. air flows through the hole and out of the pleural cavity.

• 1. air flows neither out nor in.

• 1. the lung protrudes through the hole.