Question

13. Which is the correct sequence of air passage duringinhalati
(a) Nostrils larynx → pharynx trachea -lungs
trachea
(b) Nasal passage
pharynx larynx alveoli
(c) larynx + nostrils → pharynx
(d) Nostrils → pharynx larynx
lungs
trachea
alveoli
14. During respiration exchange of gases take placein
(a) trachea andlarynx
(b) alveoli oflungs
(c) alveoli andthroat
(d) throat andlarynx
15. Which of the following statement (s) is (are) true aboutheart?
© Left atrium receives oxygenated blood from different
parts of body while right atrium receives deoxygenated
blood fromlungs
i Left ventricle pumps oxygenated blood to different
body parts while right ventricle pumps deoxygenated
blood tolungs
(m) Left atrium transfers oxygenated blood to right
ventricle which sends it to different bodyparts
(iv) Right atrium receives deoxygenated blood from different
parts of the body while left ventricle pumps oxygenated
blood to different parts of thebody
(a) (i) (b) (ii)
(c) (ii) and (iv) (d) (i) and (iii)
16. What prevents backflow of blood inside the heart duringcontractie
(a) Valves inheart
(b) Thick muscular walls ofventricles
(c) Thin walls ofatria
(d) All of theabove

pls answer fast​

Answer 1

13 answer is b

Nostril pharynx larynx trachea lungs

14 c alveoli