ch 22 (respiratory)

Which of the following occurs during the chloride shift?

Chloride is exchanged for bicarbonate

Contraction of the external intercostal muscles causes which of the following to occur?

The ribs and sternum move upward

A section of the lung that receives its own tertiary bronchus is called the

bronchopulmonary segment

Which of the following are structural features of the trachea?

c-shaped cart, cilia, smooth muscle fibers

A full complement of mature alveoli are present by ________.

early childhood, around 8 years of age

Alveoli are also known as capillaries

false

Oxygen is a molecule made from three oxygen atoms

false

Oxyhemoglobin forms by a chemical reaction between which of the following?

hemoglobin and oxygen

Increased ventilation that results in an increase in blood pH is called

hyperventilation

What is the function of the conchae in the nasal cavity?

increase surface area

Gas exchange that occurs at the level of the tissues is called

internal respiration

Which of the following processes does atmospheric pressure play a role in?

pulmonary ventilation

Which of the following prevents the alveoli from collapsing

residual volume

Gas flow decreases as ________ increases.

resistance

The _________________ system consists of organs and structures that allow us to breathe by taking in oxygen and expelling carbon dioxide

respiratory

Exercise can trigger symptoms of AMS due to which of the following?

small venous reserve of oxygen

Hemoglobin is a special oxygen binding protein

true

Oxygen is transported through blood

true

When the partial pressure of oxygen becomes greater in the capillaries than the partial pressure of oxygen in the surrounding tissues, oxygen begins to move out of the capillaries into the surrounding tissue.

true

A low partial pressure of oxygen promotes hemoglobin binding to carbon dioxide. This is an example of the

Haldane effect