Animal Science 434 - Male Anatomy

Objectives:

  1. Examine and learn the anatomical parts of the male reproductive tract. You will dissect either the bull or boar tract.
  2. Connect structure with function for the different parts of the male reproductive tract.
  3. Learn how the bull is similiar yet different from other species.
  4. Identify sperm from teh epididymis.
  5. Learn about Brucellosis, its diagnosis and prevention.
  6. Utilize statistics.
  7. Be sure you know your cow for the cow project and lab sections protocols and dates to implement outside of class.
  8. Select your mexico project and learn how to use electronic translation software.

Terminology:

  1. excurrent duct system - the vas efferentia, epididymis and vas deferens
  2. castration - removal of the testes in the male or ovaries in female
  3. cryptorchidism - when the testis fail to descend into the scrotum
  4. scrotum - a sac consiting of skin, sweat glands, a layer of smooth muscle (tunica dartos) and connective tissue that houses the testis
  5. inguinal hernia - when the adominal contents pass through the inguinal canal and enter the vaginal cavity (space between tunica vaginalis parital and visceral)
  6. gubernaculum - connective tissue that connects the testis and scrotum (specifically the tunica vaginalis parietal to epididymis/testis)

Laboratory Activities:

  1. Get ready for lab: You will review male anatomy in several species and view videos of the bull reproductive tract anatomy.
  2. Anatomy - First do the bull or boar dissection and then you can do the stallion. View any tracts you do not dissect either in class or via the on-line material below.
    • Bull anatomy: You wll dissect a bull reproductive tract and identify the different anatomical parts.
    • Boar Anatomy: You will dissect a boar reproductive tract and identify the different anatomical parts.
    • Stallion: You will dissect a stallion reproductive tract and identify the different anatomical parts. Includes quizes on the stallion anatomy.
  3. Diagrams: To enhance your ability to remember what you have just observed in the dissection, you will draw a diagram of the bull reproductive tract.
  4. Species differences: Examine how male anatomy varies among species.
  5. Structure and Function: Connect the structure with the function and how this affects physiological differences among species.
  6. Epididymal Sperm: Prove sperm are present in the tail of the epidymis.
  7. Brucellosis: Examine the consequences and prevention of this disease.
  8. Statistics: Examine the results of lab 1 statistical excersice. What can we learn?
  9. Mexico Project: You will select your project topic.