respiratory system quiz2

ventilation refers to the process by which

air moves into and out of the lungs

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

amyotrophic lateral sclerosis

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

dead space volume

all of the following statements are TRUE regarding lung cancer EXCEPT which one?

one hundred percent of lung cancers are caused by smoking or exposure to cigarette smoke

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

oxygen is essential for the production of most of the ATP's required to fuel cell functions

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 & ventricle before entering the systemic circuit

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

air is warmed, filtered, and humidified

carbon dioxide is carried from the tissues to the lungs by a variety of mechanisms. which of the following lists these mechanisms in order representing the mechanism that carries the most carbon dioxide to the mechanism that carries the smallest amount?

bicarbonate- carbaminohemoglobin- dissolved in plasma

all of the following are involved in the regulation of the rate and depth of breathing EXEPT which one?

bronchi, bronchioles, and alveoli

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

bronchitis

which one of the following muscles separates the thoracic cavity from the abdominal cavity?

diaphragm

how does external respiration differ from internal respiration?

external respiration refers to gas exchange between inhaled air and blood, whereas internal respiration refers to gas exchange between the blood and tissue fluids

which one of the following is a symptom of botulism?

paralysis of muscles used for breathing

a little girl was playing in the snow one day & found that she was wiping her nose quite often. The "runny nose" that she was experiencing due to the cold temperatures resulted from

the slowed activity of nasal cilia

an increase in the amount of carbon dioxide in the body causes

a decrease in the pH of the cerebrospinal fluid

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

alveoli

all fo the following are TRUE regarding the effect of smoking on the respiratory system EXCEPT which one?

antimicrobial compounds found in the respiratory mucus of smokers decrease the likelihood of infection

Bronchioles differ from bronchi in that they

can have alveoli attached to them

The rate and depth of normal breathing is determined by

carbon dioxide levels in the blood

all of the following are involved in the process of breathing EXCEPT which one?

circulatory system

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

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

epiglottis

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

the respiratory control center is located

in the medulla oblongata

during exhalation the pressure inside the lungs

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

carbamino-hemoglobin differs from hemoglobin in that carbamino-hemoglobin

is bound to carbon dioxide

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

larynx

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

larynx

external respiration is the process of

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

arrange the following entries in the order in which air contacts them as air is drawn into the body

pharynx, larynx, trachea, bronchiole, alveoli

which of the following is a penetrating wound resulting in collapse of the lungs?

pneumothorax

during inspiration, intercostal muscles function to

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

all of the following are part of an individual's vital capacity EXCEPT which one?

residual volume

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

soluble bicarbonate ion