Quiz 7

Which of the following occurs as air is drawn through the nose?

Air is warmed, filtered, and humidified.

Which one of the following best explains why humans must constantly breathe in oxygen in order to stay alive?

Oxygen is the final electron acceptor in the process of cellular respiration, which results in the production of the ATPs required to fuel cell functions.

Which of the following structures is the location of gas exchange between the inhaled air and the blood?

alveoli

The central nervous system is composed of which of the following?

brain and spinal cord

During the ingestion of food or liquid, which one of the following tips to block the opening to the trachea?

epiglottis

The respiratory control center is located:

in the medulla oblongata

Electrical impulses are transmitted between components of the central nervous system via which one of the following?

interneurons

When air entering the respiratory tract leaves the pharynx, it next enters the:

larynx

During a cough, what is responsible for constricting the size of the trachea?

smooth muscle

Oxygen-rich blood flows through the heart:

via the left atrium and ventricle before entering the systemic circuit