Human Biology Ch 10

Lung capacity is typically measured with the use of a spirometer.

True

Deoxygenated blood is transported to the pulmonary capillaries of the lungs by the pulmonary veins; oxygenated blood is transported away from the pulmonary capillaries by the pulmonary arteries.

False

Oxygen and carbon dioxide are exchanged with blood directly across the alveoli.

True

During exhalation, the pressure inside the lungs

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

Snus is a new product developed in Sweden that

is a type of smokeless tobacco

Carbaminohemoglobin differs from hemoglobin in that carbaminohemoglobin

is bound to carbon dioxide

The respiratory control center is located

medulla oblongata.

Lung diseases, such as emphysema, can be diagnosed by measuring lung volumes and the rates at which these volumes change.

True

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

function as a lubricant as the lungs move during ventilation.

In which of the following situations is hemoglobin most likely to bind oxygen?

in a tissue with a neutral pH

In which of the following situations is hemoglobin most likely to bind oxygen? in a tissue with a neutral pH

in a tissue with a neutral pH

During exhalation, the pressure inside the lungs

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

Carbaminohemoglobin differs from hemoglobin in that carbaminohemoglobin

is bound to carbon dioxide.

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

Air is warmed and filtered.

The process of breathing requires the coordinated efforts of the

All of the above are correct.

Which of the following is true regarding lung cancer?

All of the above are correct.

Hemoglobin in red blood cells can bind both oxygen and carbon dioxide, but not at the same time since they use the same binding site.

False

Longer vocal cords generate higher-pitched tones than shorter ones.

False

Oxygen moves from the lungs into the blood during internal respiration.

False

The trachea is completely surrounded by rings of cartilage, resulting in an organ that is inflexible.

False

Ventilation refers to the process by which

air moves into and out of the lungs.

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

bronchitis

Burning of carbon-based fuels can produce ________, an odorless gas that competes with oxygen for binding to hemoglobin.

carbon monoxide

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

This muscle separates the thoracic cavity from the abdominal cavity

diaphragm

This muscle separates the thoracic cavity from the abdominal cavity.

diaphragm

During the ingestion of food or liquid, the ________ tips to block the opening to the trachea.

epiglottis

External respiration is the process of

moving gases into or out of the blood stream with the lung tissue

External respiration is the process of

moving gases into or out of the blood stream with the lung tissue.

Which of the following is a symptom of botulism?

paralysis of muscles used for breathing

Breast feeding has been shown to have no effect on causing breasts to sag later in life, however ________ does contribute to sagging.

smoking

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

soluble bicarbonate ion

Oxygen rich blood flows through the heart

via the left atrium and ventricle before leaving on the systemic circuit.