When you have a bad head cold, you breathe through your mouth. What possible pro

Question

When you have a bad head cold, you breathe through your mouth. What possible problems can this cause?

Question 2 options:

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Question 3 (5 points)

The lungs are mostly passageways and elastic tissue. What are the roles of these two components?

Question 3 options:

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Question 4 (5 points)

Describe three physical and two chemical factors that can modify respiratory rate and depth and compare their relative importance.

Question 4 options:

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Question 5 (5 points)

The respiratory conducting passageways do all of the following EXCEPT:

Question 5 options:

A) allow air to reach the lungs

B) purify air

C) humidify air

D) exchange gases

E) warm incoming air

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Question 6 (5 points)

Which of the following is NOT a function of the sinuses:

Question 6 options:

A) they lighten the skull

B) they act as resonance chambers for speech

C) they produce mucus

D) they are olfactory receptors for smell

E) they help to moisten air

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Question 7 (5 points)

Cilia of the trachea propel contaminated mucus:

Question 7 options:

A) toward the throat to be swallowed or spat out

B) toward the nose to be sneezed out

C) toward the epiglottis to be coughed out

D) toward the lungs to be encapsulated

E) toward the glottis to be hiccupped out

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Question 8 (5 points)

Which of the following does NOT apply to the right primary bronchus:

Question 8 options:

A) it is wider than the left bronchus

B) it is shorter than the left bronchus

C) it is narrower than the left bronchus

D) it is straighter than the left bronchus

E) it is the more common site for an inhaled object to become lodged

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Question 9 (5 points)

Which of the following is NOT true of the lungs:

Question 9 options:

A) the narrower portion of each lung is called the apex

B) the bases rest on the diaphragm

C) the left lung has two lobes

D) the right lung has three lobes

E) both lungs have two lobes

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Question 10 (5 points)

Which of the following is NOT true of the pleurae:

Question 10 options:

A) they produce a slippery serous secretion

B) they usually cling together

C) they produce sticky mucus

D) they glide easily against each other but resist being pulled apart

E) the pleural space is more of a potential, rather than actual, space

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Question 11 (5 points)

Which of the following is NOT true of inspiration:

Question 11 options:

A) contraction of the diaphragm helps increase the size of the thoracic cavity

B) dilation of the external intercostals helps increase the size of the thoracic cavity

C) increased intrapulmonary volume causes the gases to spread out

D) the decreased gas pressure produces a partial vacuum that sucks air in

E) air continues to move into the lungs until intrapulmonary pressure equals atmospheric pressure

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Question 12 (5 points)

Which of the following is NOT true of expiration:

Question 12 options:

A) it is largely a passive process

B) it is usually effortless

C) gas flows out to equalize inside and outside the lungs

D) intrapulmonary volume decreases when the rib cage descends

E) intrapulmonary volume increases when the lungs recoil

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Question 13 (5 points)

The total amount of exchangeable air is the:

Question 13 options:

A) tidal volume

B) inspiratory reserve volume

C) expiratory reserve volume

D) vital capacity

E) dead space volume

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Question 14 (5 points)

Most carbon dioxide is transported in plasma as:

Question 14 options:

A) carbohemoglobin

B) bicarbonate ion

C) oxyhemoglobin

D) hydrogen ion

E) carbonic acid

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Question 15 (5 points)

The bluish cast that results from inadequate oxygenation of the tissues is called:

Question 15 options:

A.cyanosis

B. xanthosis

C.melanosis

D.albinism

E. erythema

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Question 16 (5 points)

One of the most important stimuli leading to increased rate and depth of breathing is:

Question 16 options:

A) decreased oxygen level in the blood

B) increased blood pH

C) increased carbon dioxide in the blood

D) increased hydrogen ion in the blood

E) decreased carbon dioxide in the blood

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Question 17 (5 points)

Emphysema results in all of the following except:

Question 17 options:

A) enlarged alveoli

B) lung fibrosis

C) barrel chest

D) decreased lung elasticity

E) moon face

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Question 18 (5 points)

IRDS is:

Question 18 options:

A) infant respiratory disease state

B) intermittent respiratory distress state

C) infant respiratory distress syndrome

D) intermittent respiratory disease syndrome

E) infant respiratory disease syndrome

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Question 19 (5 points)

Which of the following is NOT true of cystic fibrosis:

Question 19 options:

A) it is a common genetic disease

B) it causes over secretion of thick mucus that clogs the respiratory passages

C) it impairs food digestion

D) it causes sweat glands to produce an extremely salty perspiration

E) it is rarely fatal

Explanation / Answer

2.   in children breathing through mouth can  cause crooked teeth, facial deformities, or poor growth. In adults,it can lead to bad breath, gum disease.

3. Bronchi are the main passageway into the lungs which evolve into tiny air sacs called alveoli,site of oxygen and carbon dioxide exchange in the respiratory system.

role of elastic tissues is to rebound of the lungs after having been stretched by inhalation.

5(D).gaseous exchange.

gaseous exchange is the function of alveoli.

6.(D)they are olfactory receptors for smell

Olfactory receptors (ORs), also known as odorant receptors, are expressed in the cell membranes are responsible for smell.

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