different between holocrine vs apocrine

English

Etymology

From Ancient Greek ???? (hólos, “whole, entire”) and ?????? (kr??n?, “to separate”).

Adjective

holocrine (not comparable)

1. (anatomy, biology, histology) Of or relating to a mode of secretion in some exocrine glands in which the plasma membrane ruptures, releasing the cell's cytoplasm into the lumen of the gland.
   • 2004, B. G. Kapoor, Bhavna Khanna, Ichthyology Handbook, page 80,

     The venom glands of teleosts consist of an aggregation of holocrine cells derived from the epidermis but often sunken into the dermis, on either side of a spine, usually of dorsal or pectoral fin.

   • 2007, Galina N. Solntseva, N. N. Dergunova (translator), Teresa Ott (linguistic editor), Morphology of the Auditory and Vestibular Organs in Mammals, with Emphasis on Marine Species, page 42,

     In Chiroptera and Insectivora, the holocrine glands can form glandular complexes.

   • 2013, Rowen D. Frandson, W. Lee Wilke, Anna Dee Fails, Anatomy and Physiology of Farm Animals, page 11,

     The holocrine gland is the least common type. After the cell fills with secretory material, the entire holocrine gland cell discharges to the lumen of the gland to constitute the secretion. Sebaceous glands associated with hair follicles of the skin are the most common holocrine glands.

Coordinate terms

• apocrine
• merocrine

English

Etymology

From apo- (“away from”) +? Ancient Greek ?????? (kr??n?, “to separate”).

Adjective

apocrine (not comparable)

1. (anatomy, biology, histology) Of or pertaining to an apocrine gland or to its mode of secretion, which involves the budding of portions of the secreting cells.
   • 2001, Paul Peter Rosen, Rosen's Breast Pathology, page 97,

     They observed that apocrine metaplasia often was present in breasts with other "noncancerous proliferative lesions," but they found no significant difference in the frequency of apocrine metaplasia between "cancerous and noncancerous breasts."

   • 2003, Marton Lanyi, Mammography: Diagnosis and Morphological Analysis, page 64,

     Lobular cysts as well as micro- and macrocysts are very often lined to a variable extent by apocrine epithelium. Pathologists call this condition apocrine metaplasia, meaning a transformation of the normal epithelial cells into sweat-gland-like cells similar to those found in the apocrine glands of the vulva, eyelid, and external auditory canal.

   • 2011, Jivko A. Kamarashev, 3.2.1: Tumours with Apocrine and Eccrine Differentiation, Reinhard Dummer, Mark R. Pittelkow, Keiji Iwatsuki, Adèle Green, Nagwa M. Elwan (editors), Skin Cancer - A World-Wide Perspective, page 128,

     Apocrine glands are distributed throughout the body but are present in greatest abundance in the axilla, followed by the anogenital region.

Coordinate terms

• holocrine
• merocrine, eccrine

Translations

See also

• decapitation secretion

Anagrams

• caponier, procaine

Italian

Adjective

apocrine

1. feminine plural of apocrino

Anagrams

• carpione, copiarne, erpicano, pecorina