Gaseous Exchange

Question 1

Conducting Zone continues from Nose till

Answer 1

Terminal Bronchioles

Question 2

Bones present in the Nose

Answer 2

Nasal Bone
Ethmoid Bone

Question 3

The Nasal Air Channel is called

Answer 3

Nasal Vestibule

Question 4

Partition between the 2 Nasal Cavities

Answer 4

Nasal Septum

Question 5

Three Cartilagenous Partitions in the Nasal Cavity

Answer 5

Superior, Median and Inferior Turbinate

Question 6

Position of Laryngeo-Pharynx with respect to Vertebral Column

Answer 6

6th Cervical Vertebrae

Question 7

Another name for Adam’s Apple

Answer 7

Thyroid Cartilage

Question 8

Moistening and Warming of air in nose is performed by…

Answer 8

Ciliated Epithelium

Question 9

False Vocal Cords are also called…

Answer 9

Vestibular Fold

Question 10

Position of Trachea with respect to Sternum.

Answer 10

Ventral to Sternum

Question 11

Last Cartilagenous Ridge of Trachea is named as?

Answer 11

Crina

Question 12

Length and Diameter of Trachea

Answer 12

10-12 cm long
2-2.5 cm wide

Question 13

Trachea extends from __ vertebra till __ vertebra.

Answer 13

C6 to T5

Question 14

First Respiratory structure lacking Cartilage.

Answer 14

Bronchioles

Question 15

Diameter of Bronchioles

Answer 15

Less than 1mm

Question 16

Structural and Functional Unit of Lungs

Answer 16

Structural Unit—- Alveoli
Functional Unit—-Alveolar Sac

Question 17

Total Number of Alveoli in both Lungs.

Answer 17

700 million

Question 18

Which cells are responsible for the production of Surfactant in Lungs?

Answer 18

Pneumocyte II (10%)
Surfactant (Lipoprotein)

Question 19

Movement of External and Internal Intercostal Muscles during Inspiration.

Answer 19

External— Contract
Internal— Relax

Question 20

Movement and Shape of Diaphragm during expiration.

Answer 20

Relaxed
More Dome like

Question 21

Rate of breathing at Rest and during Exercise.

Answer 21

Rest— 15 to 20 X per min
Exercise— 25 to 30 X per min

Question 22

Voluntary Breathing, Involuntary Breathing and Pattern of Breathing are controlled by which parts of Brain respectively.

Answer 22

Voluntary
Cerebral Cortex
Involuntary
Medulla Oblongata
Pattern
Pons

Question 23

Which part of Medulla Oblongata inhibits Inspiration

Answer 23

Dorsal / Lateral

Question 24

Which part of Medulla Oblongata is responsible for regulating the Depth of Inspiration

Answer 24

Ventral

Question 25

Movement of the Diaphragm is stimulated by which Nerve.

Answer 25

Phrenic Nerve

Question 26

Volume occupied by Left and Right lungs respectively.

Answer 26

Left 44% Right 56%

Question 27

Space between the lungs is called.

Answer 27

Mediastinal Space

Question 28

Inner and outer membranes of Pleura are respectively called.

Answer 28

Inner *Visceral Membrane* Outer *Parietal Membrane*

Question 29

Epiglottis is made of...

Answer 29

Elastic Cartilage

Question 30

The Bronchial Tree divides ___ times.

Answer 30

23 Times

Question 31

Part of brain that regulates Rhythmic Breathing Pattern

Answer 31

Medulla Oblongata (Involuntary)

Question 32

Muscles Primarily Involved in Forced Expiration

Answer 32

Internal Intercostal Muscles

Question 33

Bronchioles are made of which kind of Epithelium.

Answer 33

Cuboidal Epithelium

Question 34

Heamoglobin has ___X more affinity for CO than O²

Answer 34

249X

Question 35

What percentage of Heamoglobin consists of enzymes?

Answer 35

5%

Question 36

Where do CO², CO, O² and H+ bind to Heamoglobin respectively?

Answer 36

CO² - Amino Group of Globin Chain CO - Heam Group (Head) O² - Heam Group (Head) H+ - Globin Chain

Question 37

Percentage of Oxygen transported via Heamoglobin and Blood Plasma respectively.

Answer 37

Oxy-Heamoglobin - 97-98 % Dissolved Form - 2-3 %

Question 38

1g Hb can carry how much Oxygen?

Answer 38

1.34 ml

Question 39

Amount of Heamoglobin in 100ml blood.

Answer 39

15 g

Question 40

Oxygen shows 98 % saturation in blood at what pressure?

Answer 40

115 mmHg

Question 41

Amount of O² and CO² per 100ml Arterial and Venous Blood respectively.

Answer 41

Arterial Blood Venous Blood 19.6 ml O². 14.4 ml 50 ml. CO². 54 ml

Question 42

Number of Amino Acids in Heamoglobin and Myoglobin respectively.

Answer 42

Heamoglobin - 574 Myoglobin. - 153

Question 43

Three (extras) respiratory pigments, their colour and their occurrence.

Answer 43

Heamocyanin - Blue - Mollusca Heamoerythrin - VioletPink - Marine Chlorocroin - Green - Annelida

Question 44

Percentage of CO² carried in the form of Carbamino Hb, Blood Plasma and Bicarbonate Ions respectively.

Answer 44

Blood Plasma - 7% Hb - 23% Bicarbonate Ions - 70%

Question 45

Blood Plasma Protein is which kind of protein?

Answer 45

Albumin

Question 46

Bicarbonate Ion after leaving Hb, combines with which salts?

Answer 46

Na+ K+

Question 47

Percentage of O² and CO² in exhaled air.

Answer 47

O² - 16% (-5%) CO² - 4% (+100%)

Question 48

Vital Capacity is made up of...

Answer 48

IRV + ERV + TV 2000ml 1500ml 500ml 1200ml

Question 49

Residual Volume of lungs is...

Answer 49

1000 to 1500ml

Question 50

Total Lung Capacity is...

Answer 50

5 to 6 L

Question 51

ERV + Residual Volume is called...

Answer 51

Function Residual Capacity

Question 52

Which part of pharynx plays a role in respiratory as well as digestive system?

Answer 52

Oro-Pharynx