has part has part has_part characteristic of has modifier abnormal adrenal gland morphology small adrenal glands MPheno.ontology decreased adrenal gland size reduced adrenal gland size MP:0002768 reduced size of the pair of endocrine glands located above the kidney that are responsible for steroid hormone secretion from the cortex and neurotransmitter (such as epinephrine and norepinephrine) secretion from the medulla abnormal decreased size adrenal gland