Human Respiratory System

Q. Contraction of diaphragm increases the volume of thoracic chamber in the

Q. Select the correct statement.
i) Thoracic chamber is an open chamber filled with air.
ii) Thoracic chamber is built by dorsal ribs, ventral vertebral column, lower diaphragm and a lateral sternum.
iii) Any change in the thoracic cavity volume is not reflected in the lung cavity because of the anatomical setup of the lungs in the thorax.
iv) Humans can’t directly alter the pulmonary volume.

1. Only i is correct
2. Only iv is correct
3. All are correct
4. Both ii and iii are correct

Q. Process occurring in PCT to maintain pH of body fluid–

1. Secretion of $H^{+}$ and secretion of $HC{O}_3^{–}$
2. Reabsorption of $H^{+}$ and secretion of $HC{O}_3^{–}$
3. Reabsorption of $H^{+}$ and $HC{O}_3^{–}$
4. Secretion of $H^{+}$ and reabsorption $HC{O}_3^{–}$

Q. Which of the following regions is/are lined by pseudostratified columnar ciliated glandular epithelium?

1. Trachea
2. Respiratory region of the nasal chamber
3. Olfactory region of the nasal chamber
4. All the above

Q. Which of the following is correct regarding lecithin?

1. It can be produced by pneumocyte-II
2. It lowers surface tension in alveoli
3. It is a phospholipid that prevents the collapsing of alveoli
4. All of the above

Q.

Lungs are enclosed in

1. Perichondrium

2. Periosteum

3. Pleural membrane

4. Pericardium

Q.

Schematically represent the path of passage of air in Human Respiratory System.

Q.

Definition of dentin, odonto blast, pulp cavity, blood vessels in simple language

Q.

The main function of the pleural membranes is to _____.

1. maintain pressure

2. remove foreign particles

3. reduce friction

4. increase thoracic pressure

Q. Which of the following are made up of epithelial cells

1. epithelial tissue
2. connective tissue
3. muscle tissue
4. nerve tissue

Q. ntRespiration occurs through general body surface in cephalochordata . Explain the cells involved in that processn

Q.

Which is the correct sequence of the air passage in man?

1. Nasal cavity$\to$larynx$\to$pharynx$\to$trachea$\to$bronchi$\to$bronchioles$\to$alveoli

2. Nasal cavity$\to$pharynx$\to$trachea$\to$Larynx$\to$bronchi$\to$bronchioles$\to$alveoli

3. Nasal cavity$\to$larynx$\to$bronchi$\to$pharynx$\to$bronchioles$\to$alveoli

4. Nasal cavity $\to$ pharynx$\to$larynx$\to$trachea$\to$bronchi$\to$bronchioles$\to$alveoli

Q.

Identify the parts labelled 1-8 in the diagram given below.

1. 1. Nasal cavity, 2. Pharynx, 3. Trachea, 4. Lungs, 5. Bronchi, 6. Bronchioles, 7. Alveoli, 8. Diaphragm

2. 1. Nasal cavity, 2. Pharynx, 3. Lungs, 4. Bronchi, 5. Bronchioles, 6. Diaphragm, 7. Alveoli, 8. Trachea

3. 1. Nasal cavity, 2. Trachea, 3. Pharynx, 4. Lungs, 5. Bronchioles, 6. Bronchi, 7. Alveoli, 8. Diaphragm

4. 1. Nasal cavity, 2. Pharynx, 3. Trachea, 4. Lungs, 5. Bronchi, 6. Alveoli, 7. Bronchiole, 8. Diaphragm

Q. Select the correct statement.
i) Thoracic chamber is an open chamber filled with air.
ii) Thoracic chamber is built by dorsal ribs, ventral vertebral column, lower diaphragm and a lateral sternum.
iii) Any change in the thoracic cavity volume is not reflected in the lung cavity because of the anatomical setup of the lungs in the thorax.
iv) Humans can’t directly alter the pulmonary volume.

1. Only i is correct
2. Both ii and iii are correct
3. Only iv is correct
4. All are correct

Q. Conducting part of the respiratory system is formed

1. From external nostrils up to the duct of alveoli
2. From the external nostrils up to the initial bronchioles
3. From external nostrils up to the terminal bronchioles
4. From external nostrils up to the alveoli

Q. Respiratory gases in our body are transported via ___________

1. RBC
2. plasma
3. WBC
4. Both a and c

Q. Which of the following is a correct sequence of movement of air during inspiration?

1. nose $\to$ nasal cavity $\to$ pharynx $\to$ trachea $\to$larynx $\to$ primary bronchi $\to$ secondary bronchi $\to$ tertiary bronchi $\to$ alveoli $\to$ blood capillaries
2. nasal cavity $\to$nose $\to$ pharynx $\to$ larynx $\to$ trachea $\to$ primary bronchi $\to$ secondary bronchi $\to$ tertiary bronchi $\to$ alveoli $\to$ blood capillaries
3. nose $\to$ nasal cavity $\to$ larynx $\to$pharynx $\to$ trachea $\to$ primary bronchi $\to$ secondary bronchi $\to$ tertiary bronchi $\to$ alveoli $\to$ blood capillaries
4. nose $\to$ nasal cavity $\to$ pharynx $\to$ larynx $\to$ trachea $\to$ primary bronchi $\to$ secondary bronchi $\to$ tertiary bronchi $\to$ alveoli $\to$ blood capillaries

Q. In human beings the number of lobes in right and left lungs is?

1. $2$ and $3$
2. $2$ and $2$
3. $3$ and $2$
4. $4$ and $2$

Q. Which is not a example of areolar connective tissue?
1.perimycium
2.sub mucosa of stomach and oesophagus
3.Endoneurium
4.Endosteum

Q.

Which of the following is not a function of the conducting zone of the respiratory system?

1. Humidifying air

2. Warming air

3. Gas exchange

4. Mucus secretion

Q.

Schematically represent the path of the passage of air in the human respiratory system.

Q. What is the importance of air sacs?

Q. The function of choroid plexus and ependymal cells is?

1. To produce lymph
2. To produce blood
3. To produce cerebrospinal fluid
4. To produce endolymph

Q. Which of the following is/are correct about the respiratory zone of the human respiratory system?

1. Alveolar sacs are part of the respiratory zone
2. The main function is to transport air into the lungs
3. The respiratory zone is involved in exchange of gases between blood and air
4. The bronchi and bronchioles are the most important parts of the respiratory zone

Q. Where are Bowman's glands located in the nasal chamber? How does the secretion from these glands contribute to smell sensation?

Q. Vital capacity of lungs is

1. $IRV+ERV+TV-RV$
2. $IRV+ERV+TV$
3. $IRV+ERV+TV+RV$
4. $IRV+ERV$

Q. How many lobes are present in the left lung?

1. $3$
2. $4$
3. $2$
4. $1$

Q.

Aerobic respiratory pathway is also termed as ___ pathway.

1. anabolic

2. catabolic

3. creatine phosphate

4. amphibolic

Q. Lining of brain ventricle and central canal of spinal cord is called as

1. Ependyma
2. Endothelium
3. Neurosensory
4. Mesothelium

Q.

The serous membrane which covers the lungs is called:

1. Pericardium

2. Peritoneum

3. Perichondrium

4. Pleura