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Carnivore Mammary Gland - Anatomy & Physiology (view source)
Revision as of 14:13, 3 September 2008
, 14:13, 3 September 2008no edit summary
{{toplink
|backcolour =EED2EE
|linkpage =Reproductive System - Anatomy & Physiology
|linktext =Reproductive System
|maplink = Reproductive System (Content Map) - Anatomy & Physiology
|pagetype =Anatomy
|sublink1=Lactation - The Mammary Gland - Anatomy & Physiology
|subtext1=MAMMARY GLAND
= General Structure =
}}
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== General Structure ==
* Each mammary complex consists of '''5-20 mammary units''' and their corresponding ducts.
* Each mammary complex consists of '''5-20 mammary units''' and their corresponding ducts.
* Ducts open separately on the tip of the teat.
* Ducts open separately on the tip of the teat.
== Bitch ==
=== Bitch ===
* Usually '''10 mammary complexes'''.
* Usually '''10 mammary complexes'''.
== Cat ==
=== Cat ===
* Usually '''8 mammary complexes'''.
* Usually '''8 mammary complexes'''.
* Extend from the ventral '''thoracic to abdominal''' region.
* Extend from the ventral '''thoracic to abdominal''' region.
== Appearance ==
= Appearance =
* Juvenile/non-lactating: inconspicuous mammary complexes with short teats.
* Juvenile/non-lactating: inconspicuous mammary complexes with short teats.
* Varies among breeds and individuals.
* Varies among breeds and individuals.
= Blood Supply =
== Blood Supply ==
* Additional supply from mammary branches of the '''lateral thoracic artery'''.
* Additional supply from mammary branches of the '''lateral thoracic artery'''.
== Lymphatics ==
= Lymphatics =
* Lymph from the cranial thoracic mammary complex drains into both the '''axillary''' and '''superficial cervical''' lymph node.
* Lymph from the cranial thoracic mammary complex drains into both the '''axillary''' and '''superficial cervical''' lymph node.
* '''Interconnection''' between left and right superficial inguinal lymph nodes.
* '''Interconnection''' between left and right superficial inguinal lymph nodes.
== Complications ==
= Complications =
* Changes characteristic of the cycle of the bitch include growth and proliferation of the mammary gland with each cycle even if the bitch does not conceive.
* Changes characteristic of the cycle of the bitch include growth and proliferation of the mammary gland with each cycle even if the bitch does not conceive.
* Frequent proliferation and subsequent [[Lactation_-_Involution_-_Anatomy_%26_Physiology|involution]] predisposes the bitch to [[General_Pathology_-_Neoplasia#Examples_of_Tumour_Types|mammary tumours]].
* Frequent proliferation and subsequent [[Lactation_-_Involution_-_Anatomy_%26_Physiology|involution]] predisposes the bitch to [[General_Pathology_-_Neoplasia#Examples_of_Tumour_Types|mammary tumours]].