Select the correct options to fill up the blanks.
(i) With repeated use of drugs, the tolerance level of receptors present in our body _______.
(ii) Smoking increases ______ content and reduces the concentration of ___ in blood.
(iii) Cannabinoid receptors are present in the ______.
(iv) Morphine is a very effective ____ and ____.
(v) Opioids are extracted from the _____ of poppy plant, Papaver somniferum.

Options

A. (i) decreases, (ii) CO, `CO_(2)`, (iii) brain, (iv) hallucinogen, depressant, (v) latex
B. (i) increases, (ii) CO, haembound oxygen, (iii) brain, (iv) sedative, painkiller, (v) latex
C. (i) decreases, (ii) C), haembound oxygen, (iii) brain, (iv) sedative, painkiller, (v) latex
D. (i) increases, (ii) CO, haembound oxygen, (iii) heart, (iv) sedative, painkiller, (v) resin

Answer

B