A defect in which specific component of the respiratory system would MOST directly impair the body's ability to effectively remove inhaled particulate matter like dust and pollen?
Type I alveolar cells
Pulmonary capillaries
Mucociliary escalator
Respiratory bronchioles
Related Questions
During swallowing, glottis can be covered by a thin elastic cartilaginous flap called …A… to prevent the entry of food into larynx. Trachea is a straight tube extending up to …B… cavity, which divides at the level of 5th thoracic vertebra into right and left primary …C…
Choose the correct option for A, B and C from the given four options to complete the above statement with reference to NCERT textbook
A-epiglottis, B-bronchi, C-bronchioles
A-epiglottis, B-mid thoracic, C-bronchi
A-epiglottis, B-hind thoracic, C-bronchi
A-epiglottis, B-pre thoracic, C-bronchi
Identify the different parts of the respiratory system in accordance to their location given below
I. Posterior part of the pharynx
II. Present at the glottis
III. In front of oesophagus
Choose the correct option accordingly
I-Nasal cavity, II-Larynx, III-Bronchi
I-Nasopharynx, II-Epiglottis, III-Wind pipe
I-Glottis, II-Larynx, III-Trachea
I-Larynx, II-Epiglottis, III-Trachea
Which of the following is the primary site of gaseous exchange in the human respiratory system?
Trachea
Bronchi
Alveoli
Larynx
A unique feature of the avian respiratory system is the presence of air sacs. Which of the following is NOT a function of these air sacs?
Reduce the weight of the bird
Act as bellows to move air through the lungs
Direct gas exchange with the blood
Help maintain a unidirectional airflow through the lungs
Right lung of rabbit is divided into
Four lobes
Two lobes
Six lobes
Eight lobes
Site of aerobic respiration in higher organisms is/are
Golgi apparatus
Mitochondria
Both (a) and (b)
Lungs
Which of the following statements regarding the chloride shift in the respiratory system is INCORRECT?
Chloride ions move into the red blood cell as bicarbonate ions move out.
It occurs in systemic capillaries.
It is essential for maintaining electrical neutrality during CO2 transport.
It results in a decrease in the pH of the red blood cell
Two friends are eating together on a dining table. One of them suddenly starts coughing while swallowing some food. This coughing would have been due to improper movement of
Diaphragm
Neck
Tongue
Epiglottis
Vocal cords occur in
Pharynx
Larynx
Glottis
Bronchial
The volume of air inhaled or exhaled during normal breathing is called:
Residual volume
Vital capacity
Tidal volume
Total lung capacity
