Eccrine
Exocrine Secretion：
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Merocrine or Eccrine – by Exocytosis
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Apocrine – by Membrane budding（Decapitation secretion）
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Holocrine – by Membrane rupture
Eccrine glands（ekkrinein：secrete）, sometimes called Merocrine glands, are the major sweat glands of the human body, found in virtually all skin.
They produce a clear, odorless substance, consisting primarily of Water and NaCl. NaCl is reabsorbed in the duct to reduce salt loss.
They are active in Thermoregulation and Emotional sweating induced by anxiety, fear, stress, and pain.
The odor from sweat is due to Bacterial activity on the secretions of the Apocrine sweat glands.
Eccrine glands are composed of an intreaepidermal spiral duct, the "acrosyringium"; a dermal duct, comprising a straight and coiled portion; and a secretory tubule, coiled deep in the dermis or hypodermis.
Eccrine glands are innervated by the Sympathetic nervous system, primarily by Cholinergic fibers, but by Adrenergic fibers as well.
Dermcidin is a newly isolated antimicrobial peptide produced by the eccrine sweat glands.
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