testing-MCQ’s – NeedBook

Breathing and Respiration

The process of exchange of O₂ from the atmosphere with which gas produced by the cells is called respiration.
1. Hydrogen
2. Carbondioxide
3. Carbonmonoxide
4. Nitrogen
Which of the following are Lower invertebrates?
1. Coelenterates
2. Sponges
3. Flatworms
4. All of these
Lower invertebrates exchange O₂ with CO₂ by?
1. Active diffusion
2. Passive diffusion
3. Facilitated diffusion
4. None of these
Earthworms transport atmospheric air within the body by using their
1. Setae
2. Nephridium
3. Cuticle
4. None of these
Which transport atmospheric air within the body by using their tracheal tubes?
1. Insects
2. Flatworms
3. Sponges
4. All of these
Which of the following are used by aquatic arthropods and molluscus to respire?
1. Skin
2. Lungs
3. Gills
4. None of these
Which of the following are vertebrates?
1. Fishes
2. Frogs
3. Mammals
4. All of these
Among vertebrates, which of the following use gills to respire?
1. Reptiles
2. Fishes
3. Birds
4. All of these
Which of the following respire through lungs?
1. Birds
2. Reptiles
3. Mammals
4. All of these
Which of the following is a cartilaginous box that helps in sound production and hence called the sound box
1. Pharynx
2. Larynx
3. Trachea
4. None of these
During swallowing glottis can be covered by a thin elastic cartilaginous flap called
1. Trachea
2. Epiglottis
3. Bronchi
4. None of these
At which level trachea divides into right and left primary bronchi
1. 7th thoracic vertebra
2. 5th thoracic vertebra
3. 5th cervical vertebra
4. 7th cervical vertebra
Each bronchi undergoes repeated divisions to form the secondary and tertiary bronchi and bronchioles ending up in very thin terminal bronchioles. Wwhether this statement is true or false?
1. True
2. False
Each terminal bronchiole gives rise to a number of very thin, irregular walled and vascularised bag-like structures called
1. Lungs
2. Pleura
3. Alveoli
4. Bronchi
The part starting with the external nostrils up to the terminal bronchioles constitute the
1. Conducting part
2. Exchange part
The thoracic chamber is formed laterally by
1. Vertebral column
2. Sternum
3. Ribs
4. Diaphragm
The thoracic chamber is formed ventrally by
1. Vertebral column
2. Sternum
3. Ribs
4. Diaphragm
The thoracic chamber is formed dorsally by
1. Vertebral column
2. Sternum
3. Ribs
4. Diaphragm
The thoracic chamber is formed on the lower side by
1. Vertebral column
2. Sternum
3. Ribs
4. Diaphragm
What is the shape of the diaphram?
1. Triangle
2. Spherical
3. Dome
4. None of these
The anatomical setup of lungs in thorax is such that any change in the volume of the thoracic cavity will be reflected in the lung (pulmonary) cavity. Such an arrangement is essential for breathing, as we cannot directly alter the pulmonary volume. Whether this statement is true or false?
1. False
2. True
The movement of air into and out of the lungs is carried out between the lungs and the atmosphere by creating
1. Pressure gradient
2. Volume gradient
3. Time gradient
4. All of these
Inspiration can occur if the pressure within the lungs (intra-pulmonary pressure) is slightly above than the atmospheric pressure.
1. True
2. False
What happens to diaphram during inspiration?
1. Contracts
2. Relaxes
Contraction of diaphragm increases the volume of thoracic chamber in which axis?
1. Antero-posterior axis
2. Dorso-ventral axis
3. Antero-lateral axis
4. None of these
The contraction of ________ muscles lifts up the ribs and the sternum
1. External inter-costal
2. Internal inter-costal
3. Diaphram
4. All of these
We have the ability to increase the strength of inspiration and expiration with the help of additional muscles in the abdomen. Whether the statement is true or false?
1. True
2. False
Healthy human breathes how many times per minute?
1. 8-10 times
2. 15-18 times
3. 12-16 times
4. 21-23 times
The volume of air involved in breathing movements can be estimated by using a
1. Stethescope
2. Spirometer
3. Thermometer
4. ECG
Tidal Volume =
1. 1200 ml
2. 3000 ml
3. 500 ml
4. 2500 ml
Healthy man can inspire or expire approximately how much of air per minute ?
1. 2000 to 3000 ml
2. 4000 to 5000 ml
3. 6000 to 8000 ml
4. 1200 to 1800 ml
Additional volume of air, a person can inspire by a forcible inspiration is called
1. Tidal Volume
2. Inspiratory Reserve Volume
3. Expiratory Reserve Volume
4. Residual Volume
Volume of air remaining in the lungs even after a forcible expiration is called
1. Tidal Volume
2. Inspiratory Reserve Volume
3. Expiratory Reserve Volume
4. Residual Volume
Expiratory Reserve Volume =
1. 500 ml
2. 2500 to 3000 ml
3. 1100 to 1200 ml
4. 1000 to 1100 ml
Volume of air that will remain in the lungs after a normal expiration is called
1. Inspiratory Capacity
2. Functional Residual Capacity
3. Expiratory Capacity
4. Vital Capacity
The maximum volume of air a person can breathe in after a forced expiration is called
1. Inspiratory Capacity
2. Expiratory Capacity
3. Functional Residual Capacity
4. Vital Capacity
Which are the primary sites of exchange of gases?
1. Larynx
2. Pharynx
3. Trachea
4. Alveoli
Pressure contributed by an individual gas in a mixture of gases is called
1. Partial pressure
2. Positive pressure
3. Negative pressure
4. None of these
What is the partial pressure of oxygen in alveoli?
1. 40 mmHg
2. 90 mmHg
3. 104 mmHg
4. 35 mmHg
How many percent of O₂ is transported by RBCs in the blood?
1. 60%
2. 75%
3. 50%
4. 97%
Each haemoglobin molecule can carry a maximum of how many molecules of O₂?
1. Two
2. Four
3. Ten
4. Six
What is the shape of oxygen dissociation curve?
1. U curve
2. Inverted U curve
3. Sigmoid curve
4. J curve
In the alveoli, where there is high pO₂, low pCO₂, lesser H⁺ concentration and lower temperature.
The above factors are all favorable for the formation of
1. Oxyhaemoglobin
2. Carbaminohaemoglobin
3. Methylhaemoglobin
4. None of these
100 ml of oxygenated blood can deliver how much of O₂ to the tissues under normal physiological conditions?
1. 15 ml
2. 25 ml
3. 5 ml
4. 30 ml
When the pCO₂ is low and pO₂ is high as in the alveoli, What happens to carbamino-haemoglobin ?
1. Association
2. Dissociation
At the tissue site where partial pressure of CO₂ is high due to catabolism, CO₂ diffuses into blood (RBCs and plasma) and forms HCO₃¯ and H+.At the alveolar site where pCO₂ is low, the reaction proceeds in the opposite direction leading to the formation of CO₂ and H₂O. Whether this statement is true or false?
1. True
2. False
100 ml of deoxygenated blood delivers approximately how much of CO₂ to the alveoli?
1. 10 ml
2. 4 ml
3. 5 ml
4. 2 ml
Which of the following is called Respiratory rhythm center?
1. Medulla
2. Pons
3. Cerebellum
4. All of these
Which of the following is called Pneumotaxic center?
1. Medulla
2. Pons
3. Hypothalamus
4. None of these
Neural signal from this centre can reduce the duration of
1. Expiration
2. Inspiration
A chemosensitive area is situated adjacent to the rhythm centre which is highly sensitive to
1. CO₂
2. O₂ and hydrogen ions
3. CO₂ and hydrogen ions
4. None of these
In which condition difficulty in breathing causing wheezing due to inflammation of bronchi and bronchioles
1. Emphysema
2. Asthma
3. Lung cancer
4. None of these
Which of the following condition is a chronic disorder in which alveolar walls are damaged due to which respiratory surface is decreased
1. Asthma
2. Emphysema
3. Lung cancer
4. None of these

MCq

Breathing and Respiration