4(b)
Mention the exact location of the following:
(i) Prostate gland
(ii) Myelin sheath
(iii) Islets of Langerhans
(iv) Semi-circular canals
(v) Eustachian tube
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(i) Surrounds urethra close to its origin from urinary bladder.
(ii) Surrounds the axon of neuron.
(iii) In Pancreas.
(iv) Inner ear / Part of the membranous labyrinth.
(v) Between middle ear and pharynx.