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Read the following statement about human...

Read the following statement about human respiration ltbgt (i) trachea divides at the level of 6th thoracic vertebra
(ii) terminal bronchioles alveoli and their ducts form the respiratory part of this system
(iii) contractionof diaphragm increases volume of thoracic chamber doosoven trally
(iv) the internal intercostals help in inspiration

A

all except (iv) are true

B

only (iii) and (iv) are false

C

only (i) is true

D

none is true

Text Solution

Verified by Experts

The correct Answer is:
D
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Fill up the blanks in the following paragraph by selecting the correct option. The movement of air into and out of the lungs is carried out by creating a (i).____ between the lungs and the atmosphere. Inspiration can occur if intra-pulmonary pressure is (ii).____ Expiration takes place when the intra-pulmonary pressure is (iii).____ than the atmospheric pressure. Expiration takes place when the intra-inspiration is initiated by the (iv).____ of diaphragm which (v).____the volume of thoracic chamber in the antero-posterior axis.

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Read the following statements about the internal structure of the human heart. I. Humans have a an auto - excitable , chambered , muscular and myogenic heat. II. The heart is mesodermal in origin and is present symmetrically between two lungs in the thoracic cavity. III. The opening between the right atrium and left ventricle is guarded by a tricuspid valve. IV. Only th sino - atrial node of the heart has hte ability to generate action potentials without any external stimuli. How many statement/s is/ are incorrect from the above ?

Read the following statements about the human nervous system : (i) A multipolar neuron is with one axon and two or more dendrites , found in the cerebral cortex. (ii) in resting condition, the sodium-potassium pump transports 3 Na^(+) inwards and 2K^(+) outwards the cell. (iii) Midbrain and hindbrain form the brain stem including the cerebellum. (iv) the pons of the hindbrain is directly connected to the spinal cord to control respiration. How many statement/s from above is/are incorrect ?

TRUEMAN BIOLOGY-BREATHING AND EXCHANGE OF GASES -MULTIPLE CHOICE QUESTIONS
  1. Go through th following statements

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  2. Which match is incorrect

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  3. Read the following statement about human respiration ltbgt (i) trache...

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  4. When CO(2) is exhaled out of the lungs which layters does it pass thr...

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  5. Four possibilites for the transport of carbon dioxide from the body ce...

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  6. A yoga teacher is demonstrating the technique of breathing exericse du...

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  7. Arrange the following in an ascending order of volume 1 expiratory ...

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  8. Increase in concentration of bicarbonated in blood plasam would result...

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  9. The correct statement about respiration are (i) In cockroach gaseou...

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  10. Read the following statements (i) the point of bifurcation of trach...

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  11. Go through the following matches (i) functional residual capacity =...

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  12. Go thruogh the following values (i) residual volume -1200 ml (ii) ...

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  13. Go through the following statements (i) the peripheral chemoreceptors ...

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  14. Go through the following statements (i) haemoglobin is 50% satruate...

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  15. O(2) dissociation curve is shifted to right in all except

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  16. It is dangerous to hold breath after porlonged hyperventialtion becaus...

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  17. External respiration allows the exchangeof carbon dioxide for oxygen a...

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  18. Which of the following would be expected to have the greatest effect o...

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  19. Which of the following statement correctly describes the respiratory t...

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  20. A person suffers punctures in his chest cavity in an accident, without...

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