Bio Chapter 10

Physicians recommend that people breathe through their noses instead of their mouths. What occurs as air is drawn through the nose?

air is warmed and filtered

Ventilation refers to the process by which?

air moves into and out of the lungs

Which of the following disorders is described as: damage to motor nerves innervating skeletal muscle; skeletal muscles weaken; death usually results 5 years of diagnosis?

amytrophic lateral sclerosis

This muscle separates the thoracic cavity from the abdominal cavity?

diaphragm

As air moves through the nasal cavity, it is humidified by?

mucus secreted by the epithelial mucus

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

muscle contractions

Carbaminohemoglobin differs from hemoglobin in that carbaminohemoglobin?

bound to carbon dioxide

A condition in which wheezing occurs with breathlessness, a persistent cough, and yields yellowish or greenish phlegm is?

bronchitis

During inspiration, intercostal muscles function to?

pull the rib cage up and out, so that lung volume increases

The process of breathing requires the coordinated efforts of the?

bones, circulatory system, muscles, the respiratory system

28. Burning of carbon=based fuels can produce?

carbon monoxide, an odorless gas that competes with oxygen for binding to hemoglobin

Which of the following results from the stimulation by nerve impulses generated in the respiratory center when they arrive at the muscles involved in inspiration?

contraction of the diaphragm

Air in the airways that does not participate in gas exchange is known as?

dead space volume

An increase in the amount of carbon dioxide in the body will cause?

decrease in the ph of the cerebrospinal fluid

During the ingestion of food or liquid, the

epiglottis tips to block the opening to the trachea

During exhalation, the pressure inside the lungs?

higher than atmospheric pressure, but drops as the air leaves the body

Bronchioles differ from bronchi in that bronchioles lack?

lack cartilage in their walls

During puberty, the increased production of testosterone in males causes the rapid enlargement of which of the following structures of the respiratory system?

larynx

When air leaves the pharynx, it next enters the?

larynx

Oxygen rich blood flows through the heart via?

left atrium and ventricle before leaving on the systemic circuit

A small amount of fluid is contained in the pleural cavity to function?

lubricant as the lungs move during ventilation

The respiratory control center is located in?

medulla oblongata

External respiration is the process of?

movement of oxygen across alveoli into the bloodstream

Which of the following is a symptom of botulism?

paralysis of muscles used for breathing

What are the 5 types of air contacts as it is drawn into the body

pharynx, larynx, trachea, bronchiole and alveoli

Breast feeding has been shown to have no effect on causing breasts to sag later in life?

smoking does contribute to sagging

Most of the carbon dioxide released by cells is transported in the venous supply in what form?

soluble bicarbonate ion

Which of the following situations is hemoglobin most likely to bind with oxygen?

tissue with a neutral pH