Neural system -
Several aspects of the neural system of the mammary gland ar important to mammary function:
- Innervation inside of the udder is sparse compared with other tissues.
- Sympathetic nerves are present in the tissue. These are the nerves
that associate with the arteries. They donot innervate the alveoli.
- Sensory nerves are found in the teats and skin. These are critical
for initiating the afferent pathway (neural pathway) of the milk ejection
- There is no parasympathetic innervation to the gland. This is similar
to other skin glands.
- There is no innervation of the secretory system. Mypepithelial
cells are not innervated. Myoepithelial cells do not contract in response to direct
innervation, but rather contract in response to the blood-borne hormone,
- Few nerves go to the interior of the udder. That means that performing
a biopsy of the gland to collect tissue can be done with only local
anesthetic administered to the skin.