BE-II BREATHING AND EXCHANGE OF GASES

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