Disorders of respiration system Questions in English

(B) Emphysema is a chronic disorder in which alveolar walls are damaged due to excessive cigarette smoking. This leads to a decrease in the respiratory surface area.
Asthma is a difficulty in breathing causing wheezing due to inflammation of bronchi and bronchioles.
Bronchitis is the inflammation of the bronchi.
Silicosis is an occupational respiratory disorder caused by the inhalation of silica dust.

(C) Asthma is a respiratory disorder characterized by difficulty in breathing and wheezing due to inflammation of the bronchi and bronchioles. The damage to the alveolar walls,which decreases the respiratory surface area,is a characteristic symptom of emphysema,a chronic disorder often caused by cigarette smoking. Therefore,option $C$ is not a symptom of asthma.

(A) Asthma is a respiratory disorder characterized by difficulty in breathing causing wheezing due to inflammation of bronchi and bronchioles.
It is often triggered by allergens.
During an asthma attack,the smooth muscles in the walls of the bronchioles undergo spasms (constriction),which narrows the airways and makes breathing difficult.
Bronchodilators and inhalers are used to relax these smooth muscles,thereby dilating the bronchioles and providing symptomatic relief.
Therefore,both the Assertion and the Reason are correct,and the Reason provides the correct explanation for why bronchodilators are used.

(A) Emphysema is a chronic disorder in which alveolar walls are damaged due to which respiratory surface is decreased. One of the major causes of this is cigarette smoking.
Since the damage to the alveolar walls is irreversible,it is a chronic obstructive disease.
It is primarily caused by long-term exposure to cigarette smoke or other air pollutants.
Therefore,the condition is preventable by avoiding such exposure.
Thus,both the Assertion and the Reason are correct,and the Reason provides a valid explanation for the cause and prevention of the disease.

(D) Pneumonia is a respiratory infection caused by bacteria such as $Streptococcus \text{ } pneumoniae$ and $Haemophilus \text{ } influenzae$.
In this condition, the alveoli (air sacs of the lungs) get filled with fluid.
This accumulation of fluid prevents the proper exchange of gases, which leads to severe respiratory problems and difficulty in breathing.

(C) When smoke is inhaled into the lungs,$CO$ (Carbon monoxide) is rapidly absorbed into the bloodstream.
It binds to the haemoglobin in the red blood cells $200$ times more effectively than oxygen does,forming carboxyhaemoglobin.
This process significantly reduces the oxygen-carrying capacity of the blood,leading to hypoxia.

(C) Asthma is a chronic respiratory condition often triggered by allergens like dust,pollen,or smoke. Exposure to these triggers can lead to inflammation and narrowing of the airways,making breathing difficult. Therefore,patients are advised to avoid such triggers. The Reason statement is incorrect because an allergic response typically causes vasodilation (widening of blood vessels) and increased capillary permeability,not vasoconstriction. This vasodilation can lead to a sudden drop in blood pressure,potentially resulting in anaphylactic shock and death. Thus,the Assertion is correct,but the Reason is incorrect.

(C) At high altitudes,the atmospheric pressure is low,which results in low oxygen availability. To compensate for this,the body manages altitude sickness through several physiological changes:
$1$. Increasing the rate of breathing to intake more oxygen.
$2$. Increasing the production of $RBCs$ to enhance oxygen-carrying capacity.
$3$. Decreasing the binding affinity of hemoglobin for oxygen (the Bohr effect),which facilitates the release of oxygen into the tissues.

(A) At high altitudes,the atmospheric pressure decreases,which leads to a decrease in the partial pressure of oxygen $(pO_2)$.
Because of this low $pO_2$,the body does not get sufficient oxygen,leading to symptoms of 'altitude sickness' such as nausea,fatigue,heart palpitations,and breathing difficulty.
Therefore,both the Assertion $(A)$ and the Reason $(R)$ are true,and $(R)$ is the correct explanation of $(A)$.

(C) Occupational respiratory disorders,such as fibrosis,occur due to the inhalation of harmful dust particles in industrial environments like stone grinding or silica mining. Wearing protective masks is a primary preventive measure to avoid the inhalation of these harmful particles. Asthma and emphysema are generally caused by allergens,smoking,or genetic factors,which are not primarily prevented by wearing a mask.

(D) Chronic respiratory disorders are long-term conditions that affect the airways and other structures of the lungs.
$A$. Emphysema is a chronic disorder in which alveolar walls are damaged due to which respiratory surface is decreased.
$B$. Asthma is a difficulty in breathing causing wheezing due to inflammation of bronchi and bronchioles.
$C$. Occupational respiratory disorders like fibrosis are caused by the inhalation of dust particles in industrial settings,leading to the proliferation of fibrous tissues.
Since all three are chronic respiratory disorders,the correct option is $D$.

(C) In certain industries,especially those involving grinding or stone-breaking,so much dust is produced that the defense mechanism of the body cannot fully cope with the situation. Long-term exposure to such dust can give rise to inflammation leading to fibrous proliferation (fibrosis) and thus causing serious lung damage. These are known as Occupational Respiratory Disorders.

(D) Altitude sickness occurs when the body is exposed to low atmospheric pressure at high altitudes,leading to low oxygen availability.
Common symptoms include nausea,fatigue,and heart palpitations as the body attempts to compensate for the lack of oxygen.

(D) Altitude sickness occurs at high altitudes due to low atmospheric pressure,which leads to low oxygen availability (hypoxia).
Our body compensates for this in three main ways:
$1$. By increasing the breathing rate to take in more oxygen.
$2$. By increasing the production of red blood cells $(RBCs)$ to enhance oxygen-carrying capacity.
$3$. By decreasing the binding affinity of hemoglobin for oxygen,which facilitates the release of oxygen into the tissues.
Therefore,all the given options are correct.

(A) $(I)$ Asthma is a difficulty in breathing causing wheezing due to inflammation of bronchi and bronchioles.
$(II)$ Emphysema is a chronic disorder in which alveolar walls are damaged due to which respiratory surface is decreased. Cigarette smoking is a major cause.
$(III)$ Occupational respiratory disorders occur in industries involving grinding or stone-breaking,leading to the proliferation of fibrous tissues (fibrosis) and causing serious lung damage.
Therefore,the correct match is $I-B, II-A, III-C$.

(C) Occupational respiratory disorders occur in certain industries, especially those involving grinding or stone-breaking, where dust is produced in large quantities.
Long-term exposure to these harmful substances (like silica or asbestos) causes inflammation in the lungs.
This chronic inflammation leads to the proliferation of fibrous tissues, a condition known as fibrosis, which causes serious lung damage.
Therefore, the correct option is $C$.

(D) In severe cases of $Pneumonia$,the alveoli get filled with fluid leading to severe problems in respiration.
As a result,the exchange of gases is severely impaired,leading to a decrease in blood oxygen levels.
This lack of oxygen causes the lips and fingernails to turn gray to bluish in color.

(B) Emphysema is a chronic disorder in which alveolar walls are damaged due to which respiratory surface is decreased. Its main symptom is shortness of breath.
Acute bronchitis is the inflammation of the mucous membrane of the bronchial tubes,which leads to coughing,shortness of breath,and production of yellow or green mucus.
Laryngitis is the inflammation of the larynx (voice box).
Sinusitis is the inflammation of the paranasal sinuses.
Therefore,option $B$ is the correct match.

(D) Silicosis is an occupational respiratory disease caused by the inhalation of crystalline silica dust,which is commonly found in stone masonry,mining,and sandblasting work.
Prolonged exposure to these dust particles leads to inflammation and scarring (fibrosis) of the lung tissue.
Asbestosis is typically associated with workers in the asbestos industry.
Emphysema is a chronic lung condition often caused by long-term smoking.
$CO$ poisoning is primarily caused by the inhalation of carbon monoxide from automobile exhausts or incomplete combustion.

(D) psychological disorder is a condition characterized by abnormal thoughts,feelings,and behaviors.
$A$,$B$,and $C$ are recognized psychological or neurodevelopmental disorders.
$D$ (Pulmonary disorder) refers to diseases affecting the lungs and respiratory system,such as asthma or chronic obstructive pulmonary disease $(COPD)$,which are physical/physiological conditions rather than psychological ones.

(B) asphyxia.
Asphyxia is a medical condition characterized by a severe deficiency of oxygen in the body $(hypoxia)$ and an excess of carbon dioxide in the blood $(hypercapnia)$.
This state leads to the cessation of breathing and loss of consciousness.
$Suffocation$ is a general term for oxygen deprivation,$emphysema$ is a chronic lung disease,and $eupnea$ refers to normal,quiet breathing.