EQ II – 3.01 Understand body surfaces, systems, and how they function.

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Presentation transcript:

EQ II – 3.01 Understand body surfaces, systems, and how they function. Reproductive System

Stallion’s Reproductive System Testicles: Primary sex organ used to produce sperm and the male hormone testosterone Seminal Vesicles, Prostrate Gland, and Bulbo Urethral Gland: Accessory sex glands that furnish fluid secretions for the semen Epididymis: Carries sperm from the testes to the Vas Deferens and provides a place for storage and maturation of sperm

Stallion Reproductive System Vas Deferens: Transports mature sperm from the epididymis to the urethra Urethra: Takes sperm from the Vas Deferens to the end of the male genitalia, the glans penis Penis: Deposits the sperm Into the female reproductive tract Stallions can ejaculate from 60 to 300 milliliters of sperm with up to about 10 billion live spermatozoa per ejaculate. A sperm cell may live in a mare’s reproductive tract for 24 to 48 hours Sperm travel to the mare’s Fallopian tubes in as short as a time of 15-18 minutes, but normally require 2-6 hours

Stallion Reproductive System

Mare’s Reproductive System Ovaries: Produce eggs and secrete the hormone estrogen that causes heat (estrus) and stimulates the production of other hormones to condition the reproductive tract. Fallopian Tubes: Connect the ovaries to the uterus and are the normal site of fertilization of the egg by the sperm

Mare’s Reproductive System Uterus: Consists of the body, cervix, and two horns. It is one of the two horns that the egg normally develops after fertilization. Prone to infections due to its elongated shape. Vagina: Receives the sperm during mating and serves as the birth canal The mare’s reproductive system has an unusual placenta arrangement and inefficient cervical closure that may hinder full- term pregnancy.

Mare’s Reproductive System

Assignment Draw the reproductive tracts of both the mare and stallion on a sheet of paper – keep these for your notes! Use the modeling clay on the back table to create models of both reproductive systems. If you have questions, let me know!