WorksheetsBE-II BREATHING AND EXCHANGE OF GASES
Total questions: 15
Worksheet time: 8mins
hemoglobin that is bonded to carbon monoxide and therefore cannot transport oxygen, is called......?
carboxyhemoglobin
metemoglobin
reduced hemoglobin
carbamino hemoglobin
which of the following is entirely made of cartilage ........?
nasal septum
larynx
glottis
trachea
Treachea divides into two right and left primary bronchi at the level of.....?
7th cervial vartebrae
3rd thoracic vertebrae
5th thoracic vertebrae
7th thoracic vertebrae
Contraction of diaphragm ........?
increase the vol of the thoracic chamber in the anterio posterior axis
increase the vol of the thoracic in the darso ventral axis
decrease the vol of the thoracic chamber in the anterio posterior axis
decrease he vol of the thoracic chamber in the dorso ventral axis
vol of the air that will remain in the lungs after normal expiration.........?
1200 ml
2300ml
4600ml
5800ml
The solubility of carbon dioxide is about......... times higher than that of oxygen across the respiratory membrane
20-25
25-50
125-150
200-250
what amount of carbon dioxide is delivered by every 100 ml of deoxygenated blood t the alveoli.....?
4 ml
5ml
15 ml
20 ml
A center that moderates the functions of the respiratory rhythm center is located in...........?
dorsal medulla oblongata
ventral medulla oblongata
pons varolli
pre central gyrus of the cerebrum
During normal respiration the ventral respiratory group located in the medulla oblongata ............?
establish the basic respiratory rhythm
controls the switch off point of inspirato n
remains inactive
excites chemosensitive zone nuerons
pnuemotaxic centre which can moderate the functions of the respiratory rhythm center is present at....?
pons region of brain
thalamus
spinal cord
right cerebral hemisphere
The C-shaped cartilaginous rings around the trachea are open posteriorlyto...?
allow for expansion of the esophagus during swallowing
allow the vocal cords to relax
prevent food from entering the nasal cavity during swallowing
prevent food from enterng the trachea
The trachea is lined with....?
ciliated simple sqamous epithelium
stratified squamous epithelium
pseudostratified ciliated columnar epithelium
pseudostratified squamous epithelium
lungs are madeup of air filled sacs, the alveoli. they donot collapse even after foreful expiration , because of......?
RV
IRV
TV
ERV
The partial pressure of oxygen in the alveoli of the lungs....?
equal to that in the blood
more than that in the blood
less thsan that in the blood
less than that of crbon dioxide
Reduction in PH of blood wil........?
reduce the blood supply to the brain
decrease the affinity of hemoglobin with oxygen
release bicarbonate ions by the liver
reduce the rate of heart beat
