. Veterinary studies for agricultural students. Veterinary medicine. LECTURE XIV. MAMMARY GLANDS The cow's udder is taken as a type of mammary gland. It is located under the inguinal region and supported by skin, loose connective tissue, and bands of white fibrous tissue which attach to the fibrous tunic of the abdomen and act as ligaments to help support the organ. The udder is covered by thin soft skin and fine hair. Anatomy.âThe udder is divided into two lateral halves, each of which has two glands, the front and the back. Each half is incased in a fibrous sac of yellow elas- tic tissue, th
. Veterinary studies for agricultural students. Veterinary medicine. LECTURE XIV. MAMMARY GLANDS The cow's udder is taken as a type of mammary gland. It is located under the inguinal region and supported by skin, loose connective tissue, and bands of white fibrous tissue which attach to the fibrous tunic of the abdomen and act as ligaments to help support the organ. The udder is covered by thin soft skin and fine hair. Anatomy.âThe udder is divided into two lateral halves, each of which has two glands, the front and the back. Each half is incased in a fibrous sac of yellow elas- tic tissue, thus the two lateral halves are well separated by the double, con- nective tissue membrane. The two quarters in each half are not so sepa- rated. The stxbstance of each gland is made up of yellow glandular tissue, connective tissue, nerves, blood ves- sels, etc. Each gland is divided into lobes, which are subdivided into lobules. Each quarter of a cow's udder is merely a compound gland, with its connective â tissue framework, nerves, blood and lymph vessels, etc. The gland tissue proper consists of a mass of branching tubes. The terminal branches end in little sac-like cavities called alveoli. These and the milk ducts (tubes) are lined with epithelial cells like all other similar structures. These lining cells are the factories in which the casein, sugar, fat, etc., are produced, from materials brought to them by the blood and lymph. There is one milk duct for each lobule. These small ducts unite to form larger and larger ducts, and thus the milk is con- veyed into the milk cistern which is located at the base of each 72 Fig. 33.âOne Quarter and Teat of Cow 's Udder. (0. K. C.) C, milk cistern. Note con- striction at end of teat. Holes, shown in the gland above, are milk ducts cut Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectl
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectveterin, bookyear1922
