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submitted by niboonsh(89),

external carotid branch supplies the superior parathyroid glands as well........?

yng  Yes the superior part supplied by superior thyroid gland which is a branch of external carotid branch. +  

submitted by krewfoo99(10),

Anyone know why heart sounds would be distant in COPD exacerbation?

yng  Patient is usually obese (blue bloater) --> diaphragm movement is limited --> can't take deep breaths, and in extreme cases, the chest size increased and causing distant heart sound. +