Question 1

The trachea divides into the right and left primary _______.&#10;A) larynx&#10;B) pharynx&#10;C) bronchioles&#10;D) bronchi

Accepted Answer

The trachea divides into two smaller tubes, known as the primary bronchi, which are responsible for directing airflow into the right and left lungs. Therefore, the correct answer is option D, bronchi. Option A, larynx, is incorrect because the larynx is located above the trachea and is responsible for sound production and protecting the lower airway. Option B, pharynx, is incorrect because it is a common passageway for both air and food, but it is not directly involved in airway branching. Option C, bronchioles, is incorrect because they are smaller subdivisions of bronchi that are located deeper in the lungs.

Question 2

During swallowing, a flap of tissue, the _______, automatically closes off the larynx so food cannot enter the lower airway.&#10;A) epiglottis&#10;B) glottis&#10;C) hilus&#10;D) tracheal flap

Accepted Answer

The epiglottis is a flap of tissue that covers the larynx during swallowing to prevent food or liquid from entering the trachea and lungs.

Question 3

The lungs are large, paired, spongy organs that occupy the _______ cavity.&#10;A) pericardial&#10;B) dorsal&#10;C) thoracic&#10;D) lumbar

Accepted Answer

The lungs are located within the thoracic cavity, which is the region of the body enclosed by the ribcage and separated from the abdominal cavity by the diaphragm. The pericardial cavity contains the heart, the dorsal cavity contains the spinal cord, and the lumbar region refers to the lower back.

Question 4

Air enters the _______, the superior part of the pharynx.&#10;A) oropharynx&#10;B) nasopharynx&#10;C) laryngopharynx&#10;D) glottis

Accepted Answer

Air enters the nasopharynx, the superior part of the pharynx, which is located behind the nasal cavity. The oropharynx (A) is the middle part of the pharynx, located behind the mouth, and the laryngopharynx (C) is the inferior part of the pharynx, located behind the larynx. The glottis (D) is located in the larynx and is the opening between the vocal folds.

Question 5

The opening into the larynx is the _______.&#10;A) epiglottis&#10;B) glottis&#10;C) laryngopharynx&#10;D) trachea

Accepted Answer

The glottis is the opening into the larynx, which is responsible for sound production and protection of the lower respiratory tract. The epiglottis is a flap of tissue that covers the glottis during swallowing to prevent food and liquid from entering the trachea. The laryngopharynx is the lower part of the pharynx that connects to both the esophagus and the larynx. The trachea is the tube that carries air from the larynx to the bronchi in the lungs.

Question 6

Specialized receptors called _______ in the medulla and in the walls of the aorta and carotid arteries are sensitive to changes in arterial carbon dioxide concentration.&#10;A) chemoreceptors&#10;B) baroreceptors&#10;C) nociceptors&#10;D) carboreceptors

Accepted Answer

Chemoreceptors are specialized receptors that are sensitive to changes in the chemical composition of blood and are located in the medulla and walls of the aorta and carotid arteries. They respond primarily to changes in arterial carbon dioxide (CO2) concentration, which is an important regulator of breathing. Baroreceptors, on the other hand, are specialized receptors that are sensitive to changes in blood pressure and are located in the walls of certain blood vessels. Nociceptors are specialized receptors that respond to painful stimuli, while carboreceptors are not a known type of receptor.

Question 7

During inspiration, when the volume of the lungs increases, _______.&#10;A) air moves out of the lungs&#10;B) oxygen moves out of the lungs&#10;C) air moves into the lungs&#10;D) air pressure in the lungs increases

Accepted Answer

During inspiration, the diaphragm and intercostal muscles contract, causing the chest cavity to increase in volume. This increase in volume causes a decrease in pressure within the lungs, allowing air to flow in and fill the expanded space. Therefore, air moves into the lungs during inspiration.

Question 8

Carbon dioxide is transported in the blood mainly _______.&#10;A) as bicarbonate ions&#10;B) dissolved in the plasma&#10;C) attached to hemoglobin&#10;D) as carbonic acid

Accepted Answer

The majority of carbon dioxide in the blood is transported as bicarbonate ions, which are formed from the reaction of carbon dioxide with water in the presence of the enzyme carbonic anhydrase. Only a small amount of carbon dioxide is carried dissolved in the plasma or attached to hemoglobin. Carbonic acid is the intermediate product of the reaction that forms bicarbonate ions.

Question 9

_______ is the exchange of gases between the body and its environment.&#10;A) Expiration&#10;B) Respiration&#10;C) Inhalation&#10;D) Exhalation

Accepted Answer

Respiration is the process by which living organisms exchange gases between their body and the environment. This involves the inhalation of oxygen and the exhalation of carbon dioxide. Expiration and exhalation refer specifically to the act of exhaling air from the lungs, while inhalation refers to the act of inhaling air into the lungs. Therefore, the most accurate choice for the exchange of gases between the body and its environment is respiration.

Question 10

The _______ is a strong, dome-shaped muscle and is the floor of the thoracic cavity.&#10;A) alveolus&#10;B) diaphragm&#10;C) intercostal&#10;D) visceral pleura

Accepted Answer

The diaphragm is a strong, dome-shaped muscle and is the floor of the thoracic cavity. A is incorrect because alveolus is a small sac found within the lungs where gas exchange occurs. C is incorrect because intercostal refers to the muscles between the ribs. D is incorrect because visceral pleura is the membrane that covers the lungs.

Question 11

_______ cells within the lining of the nose produce more than a pint of mucus a day.&#10;A) White blood&#10;B) Immune&#10;C) Ciliated&#10;D) Mucous

Accepted Answer

The answer of _______ cells within the lining of the...

Question 12

Respiration supplies the cells of the body with _______ and rids them of _______.&#10;A) oxygen; carbon dioxide&#10;B) carbon dioxide; oxygen&#10;C) oxygen; nitrogen&#10;D) carbon dioxide; nitrogen

Accepted Answer

The answer of Respiration supplies the cells of the body...

Question 13

Blood vessels and nerves enter and leave the lung at the _______.&#10;A) hilus&#10;B) bronchial tree&#10;C) glottis&#10;D) diaphragm

Accepted Answer

The answer of Blood vessels and nerves enter and leave...

Question 14

The correct sequence of airflow into the body is _______.&#10;A) nasal cavities pharynx larynx trachea bronchus bronchioles alveoli&#10;B) nasal cavities larynx pharynx trachea bronchus bronchioles alveoli&#10;C) nasal cavities pharynx larynx trachea bronchioles bronchus alveoli&#10;D) nasal cavities larynx pharynx trachea bronchioles bronchus alveoli

Accepted Answer

The answer of The correct sequence of airflow into the...

Question 15

The rate, depth, and rhythm of breathing are regulated by the respiratory centers in the _______ and ______.&#10;A) medulla; heart&#10;B) medulla; pons&#10;C) pons; lungs&#10;D) lungs; heart

Accepted Answer

The answer of The rate, depth, and rhythm of breathing...

Question 16

The _______ is often referred to as the voice box.&#10;A) epiglottis&#10;B) pharynx&#10;C) larynx&#10;D) hilus

Accepted Answer

The answer of The _______ is often referred to as...

Question 17

The respiratory system consists of the _______ and the _______.&#10;A) lungs; pulmonary arteries&#10;B) trachea; alveoli&#10;C) airway; pulmonary vessels and nerves&#10;D) lungs; airway

Accepted Answer

The answer of The respiratory system consists of the _______...

Question 18

The wall of an alveolus consists of _______.&#10;A) stratified squamous epithelium with mucous cells&#10;B) an epithelial lining resting on a thick layer of connective tissue&#10;C) a single layer of epithelial cells containing macrophages and plasma cells&#10;D) a single layer of epithelial cells and elastic fibers

Accepted Answer

The answer of The wall of an alveolus consists of...

Question 19

_______ is the movement of air into and out of the lungs and is generally accomplished by breathing.&#10;A) Cardiac ventilation&#10;B) Pulmonary ventilation&#10;C) Cardiac respiration&#10;D) Pulmonary expiration

Accepted Answer

The answer of _______ is the movement of air into...

Question 20

_______ increases the chances that inhaled particles are trapped by mucus and do not enter the lungs.&#10;A) Bronchial constriction&#10;B) CPR&#10;C) Bronchitis&#10;D) Oxyhemoglobin

Accepted Answer

The answer of _______ increases the chances that inhaled particles...

Question 21

Air passes into the nose through its two openings, the _______, or nostrils.&#10;A) nasal septum&#10;B) sinuses&#10;C) nares&#10;D) bronchioles

Accepted Answer

The answer of Air passes into the nose through its...

Question 22

Chronic bronchitis and emphysema are chronic _______ diseases that have been linked to smoking and breathing polluted air.&#10;A) coronary&#10;B) lung capillary&#10;C) pulmonary&#10;D) alveolar

Accepted Answer

The answer of Chronic bronchitis and emphysema are chronic _______...

Question 23

All of the following pairs are synonymous except _______.&#10;A) bronchioles and alveoli&#10;B) trachea and windpipe&#10;C) inspiration and inhalation&#10;D) pharynx and throat

Accepted Answer

The answer of All of the following pairs are synonymous...

Question 24

During inspiration, the _______.&#10;A) diaphragm contracts and flattens and the intercostal muscles contract&#10;B) diaphragm and intercostal muscles relax, permitting the elastic tissues of the lung to recoil&#10;C) diaphragm does not play a role&#10;D) external intercostal muscles relax

Accepted Answer

The answer of During inspiration, the _______.&#10;A) diaphragm contracts and...

Question 25

Carbon dioxide is transported in the blood mostly as _______.&#10;A) carbon dioxide dissolved in the plasma&#10;B) carboxyhemoglobin&#10;C) bicarbonate ions&#10;D) carbonic acid

Accepted Answer

The answer of Carbon dioxide is transported in the blood...

Question 26

Impulses from the medulla reach the diaphragm by way of the _______ nerves.&#10;A) vagus&#10;B) phrenic&#10;C) tracheal&#10;D) sciatic

Accepted Answer

The answer of Impulses from the medulla reach the diaphragm...

Question 27

The _______, or windpipe, is located anterior to the esophagus.&#10;A) larynx&#10;B) trachea&#10;C) bronchus&#10;D) glottis

Accepted Answer

The answer of The _______, or windpipe, is located anterior...

Question 28

Expired air has more than 100 times more _______ than air inspired from the environment.&#10;A) oxygen&#10;B) surfactant&#10;C) hydrogen&#10;D) carbon dioxide

Accepted Answer

The answer of Expired air has more than 100 times...

Question 29

The vital link between the alveoli and the body cells is the _______.&#10;A) bronchial tree&#10;B) diaphragm&#10;C) circulatory system&#10;D) lungs

Accepted Answer

The answer of The vital link between the alveoli and...

Question 30

The cilia-propelled mucus elevator keeps foreign material out of the _______.&#10;A) stomach&#10;B) lungs&#10;C) nasal septum&#10;D) vocal cords

Accepted Answer

The answer of The cilia-propelled mucus elevator keeps foreign material...

Question 31

The _______ is more popularly known as the voice box.&#10;A) pharynx&#10;B) larynx&#10;C) trachea&#10;D) bronchioles

Accepted Answer

The answer of The _______ is more popularly known as...

Question 32

Each lung is covered with a(n) _______, which forms a sac enclosing the lung and continues as the lining of the thoracic cavity.&#10;A) mass of capillaries&#10;B) pleural membrane&#10;C) parietal pleura&#10;D) intercostal muscle

Accepted Answer

The answer of Each lung is covered with a(n) _______,...

Question 33

The opening into the larynx is the _______.&#10;A) glottis&#10;B) epiglottis&#10;C) Adam's apple&#10;D) trachea

Accepted Answer

The answer of The opening into the larynx is the...

Question 34

A decrease in carbon dioxide inhibits _______, resulting in slower breathing.&#10;A) chemoreceptors&#10;B) the phrenic center in the pons&#10;C) the alveoli&#10;D) capillaries in the lungs

Accepted Answer

The answer of A decrease in carbon dioxide inhibits _______,...

Question 35

Hemoglobin forms a weak bond with ________ to be transported in the blood.&#10;A) carbon monoxide&#10;B) nitrogen&#10;C) bicarbonate ions&#10;D) oxygen

Accepted Answer

The answer of Hemoglobin forms a weak bond with ________...

Question 36

_______ increase(s) the chances that inhaled particles are trapped by mucus and do not enter the lungs.&#10;A) Rapid breathing&#10;B) Slow breathing&#10;C) Macrophages in the trachea&#10;D) Bronchial constriction

Accepted Answer

The answer of _______ increase(s) the chances that inhaled particles...

Question 37

During cellular respiration, _______ is produced as a waste product.&#10;A) oxygen&#10;B) nitrogen&#10;C) carbon dioxide&#10;D) glucose

Accepted Answer

The answer of During cellular respiration, _______ is produced as...

Question 38

Breathing is regulated by _______.&#10;A) respiratory centers in the medulla and pons&#10;B) oxygen concentration in the blood&#10;C) diffusion of oxygen and carbon dioxide&#10;D) buffers in the blood

Accepted Answer

The answer of Breathing is regulated by _______.&#10;A) respiratory centers...

Question 39

The bony structures that increase the surface area in the nose are the _______.&#10;A) nasal septa&#10;B) nostrils&#10;C) bronchioles&#10;D) conchae

Accepted Answer

The answer of The bony structures that increase the surface...

Question 40

Alveoli are coated by a thin film of _______, a substance that prevents the alveoli from collapsing.&#10;A) mucus&#10;B) carbonic acid&#10;C) oxygen&#10;D) surfactant

Accepted Answer

The answer of Alveoli are coated by a thin film...

Question 41

MATCHING&#10;Fill in the correct labels for the following figure using the word bank below.&#10;   &#10;a.Trachea&#10;b.Diaphragm&#10;c.Larynx&#10;d.Sinuses&#10;e.Respiratory centers&#10;f.Nasal conchae&#10;g.Left lung&#10;h.Epiglottis&#10;i.Primary bronchus&#10;G __________

Accepted Answer

The answer of MATCHING&#10;Fill in the correct labels for the...

Question 42

MATCHING&#10;Fill in the correct labels for the following figure using the word bank below.&#10;   &#10;a.Trachea&#10;b.Diaphragm&#10;c.Larynx&#10;d.Sinuses&#10;e.Respiratory centers&#10;f.Nasal conchae&#10;g.Left lung&#10;h.Epiglottis&#10;i.Primary bronchus&#10;C __________

Accepted Answer

The answer of MATCHING&#10;Fill in the correct labels for the...

Question 43

Why does the body produce more mucus during infections and allergic reactions?

Accepted Answer

The answer of Why does the body produce more mucus...

Question 44

MATCHING&#10;Fill in the correct labels for the following figure using the word bank below.&#10;   &#10;a.Trachea&#10;b.Diaphragm&#10;c.Larynx&#10;d.Sinuses&#10;e.Respiratory centers&#10;f.Nasal conchae&#10;g.Left lung&#10;h.Epiglottis&#10;i.Primary bronchus&#10;A __________

Accepted Answer

The answer of MATCHING&#10;Fill in the correct labels for the...

Question 45

MATCHING&#10;Fill in the correct labels for the following figure using the word bank below.&#10;   &#10;a.Trachea&#10;b.Diaphragm&#10;c.Larynx&#10;d.Sinuses&#10;e.Respiratory centers&#10;f.Nasal conchae&#10;g.Left lung&#10;h.Epiglottis&#10;i.Primary bronchus&#10;H __________

Accepted Answer

The answer of MATCHING&#10;Fill in the correct labels for the...

Question 46

MATCHING&#10;Fill in the correct labels for the following figure using the word bank below.&#10;   &#10;a.Trachea&#10;b.Diaphragm&#10;c.Larynx&#10;d.Sinuses&#10;e.Respiratory centers&#10;f.Nasal conchae&#10;g.Left lung&#10;h.Epiglottis&#10;i.Primary bronchus&#10;E __________

Accepted Answer

The answer of MATCHING&#10;Fill in the correct labels for the...

Question 47

MATCHING&#10;Fill in the correct labels for the following figure using the word bank below.&#10;   &#10;a.Trachea&#10;b.Diaphragm&#10;c.Larynx&#10;d.Sinuses&#10;e.Respiratory centers&#10;f.Nasal conchae&#10;g.Left lung&#10;h.Epiglottis&#10;i.Primary bronchus&#10;B __________

Accepted Answer

The answer of MATCHING&#10;Fill in the correct labels for the...

Question 48

MATCHING&#10;Fill in the correct labels for the following figure using the word bank below.&#10;   &#10;a.Trachea&#10;b.Diaphragm&#10;c.Larynx&#10;d.Sinuses&#10;e.Respiratory centers&#10;f.Nasal conchae&#10;g.Left lung&#10;h.Epiglottis&#10;i.Primary bronchus&#10;F __________

Accepted Answer

The answer of MATCHING&#10;Fill in the correct labels for the...

Question 49

MATCHING&#10;Fill in the correct labels for the following figure using the word bank below.&#10;   &#10;a.Trachea&#10;b.Diaphragm&#10;c.Larynx&#10;d.Sinuses&#10;e.Respiratory centers&#10;f.Nasal conchae&#10;g.Left lung&#10;h.Epiglottis&#10;i.Primary bronchus&#10;I __________

Accepted Answer

The answer of MATCHING&#10;Fill in the correct labels for the...

Question 50

MATCHING&#10;Fill in the correct labels for the following figure using the word bank below.&#10;   &#10;a.Trachea&#10;b.Diaphragm&#10;c.Larynx&#10;d.Sinuses&#10;e.Respiratory centers&#10;f.Nasal conchae&#10;g.Left lung&#10;h.Epiglottis&#10;i.Primary bronchus&#10;D __________

Accepted Answer

The answer of MATCHING&#10;Fill in the correct labels for the...

Deck 14: The Respiratory System