University:
Sam Houston State University
Course:
BIOL 2413 | General Zoology
Academic year:

2020
Views:

403

Pages:

11
Author:

K Moody

Beware of Obstacles • Blind Pouch – Front End of Vagina – 1/2 to 1 Inch Deep, Surrounds Entire Back of Cervix • Fingerlike Projections – Arranged in 3 or 4 Circular Rings – Cause Passageway to be Crooked, Contain Blind Pockets, or Dead Ends Natural Obstructions The Target • Semen Should be Deposited Into the Uterine Body The Target Uterus • Womb Where Calf Develops • Single Short Body and Two Horns • Horns Vary in Length From 8 to 15 Inches, and 5/8 to 2 Inches in Diameter • Walls of Uterus are Soft and Spongy – Avoid Passing Syringe Past the Front End of Cervix • It is Easy to Poke Into or Through the Uterine Wall • Can Cause Infection or Even Fatal Peritonitis Uterus Uterus Uterus Oviducts • Also Known as Fallopian Tube – 8 to 10 Inches Long – Outside Diameter is Size of a Pencil Lead – Inside Diameter is Microscopic • Tube That Provides Route Between Ovary and Uterine Horn – Sperm and Eggs Move Through These Tubes – Fertilization Occurs Halfway Down Oviduct • Site Called Ampullary-Isthmic Junction Oviducts Oviducts Ovaries • Oval-Shaped – 1 to 2 Inches Long • Two Per Cow – Left and Right • Produce Tiny Eggs (ovulate) – Right Ovary Releases Slightly More Than 1/2 of the Eggs – Chance Determines Which Ovary Will Produce Egg at Ovulation Structures in the Ovary • Graafian Follicle – Fluid Filled Sac Where Egg Develops – Fluid is Rich in Hormones • Bring About Temporary Physical and Psychological Changes – At a Certain Time the Follicle Ruptures • Corpus Luteum (CL) – – – – Also known as the Yellow Body Develops at Site of Collapsed Follicle Rapid Growing, Solid, Meaty Structure Remains Throughout Pregnancy