AP (Advanced Placement) Biology: Questions 205 - 207 of 327

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Question number: 205

» Respiratory Systems

MCQ▾

Question

The movement of respiratory mucus helps protect the respiratory tree. Which of the following is true about this mechanism?

Choices

Choice (5) Response

a.

All of the mucus is swept upward to be swallowed or spit out.

b.

Movement of the mucus is random to prevent attachment to the epithelium by respiratory pathogens.

c.

The movement of the mucus helps ensure that both the upper and lower respiratory tracts remain sterile as maintained by macrophages.

d.

Mucus below the larynx is swept downward, and mucus above the larynx is swept upward.

e.

Mucus above the pharynx is swept downward, and mucus below the pharynx is swept upward.

Question number: 206

» Respiratory Systems

MCQ▾

Question

What is the function of the septal cells found within the alveoli of the lungs?

Choices

Choice (5) Response

a.

They provide immune surveillance, protecting the lungs from infection.

b.

They serve as a barrier between the circulatory system and the respiratory system.

c.

They comprise the bulk of the alveolar cells involved in gas exchange.

d.

They secrete surfactants.

e.

They serve to remove dust and dirt particles within the lungs.

Question number: 207

» Respiratory Systems

MCQ▾

Question

During deep breathing, which of the following muscles is (are) most involved?

Choices

Choice (5) Response

a.

The external and internal intercostals

b.

The external intercostals

c.

The diaphragm and serratus anterior

d.

The diaphragm

e.

The diaphragm, internal intercostals, and external intercostals

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