Male Reproductive System
Session 20
Supplemental Instruction
Iowa State University / Leader: / Ivy
Course: / AnS 214
Instructor: / Keating
Date: / 3/20/11

TESTICULAR ANATOMY:

1)  What is the male reproductive organ?

2)  The sac of skin that contains the paired testes is called the ______.

3)  How much lower is testicular temperature than that of the body core? Why?

4)  Name the two muscles that serve to maintain testicular temperature and note their fiber type:

5)  Blood exchange and cooling in the testes is accomplished via a ______flow of blood that transfers heat between the ______artery and the veins of the ______. Thus arterial blood is ______, while venous blood is ______.

6)  Label the picture to the right with the corresponding parts of the testes.

7)  List the order of the structures in which sperm is conveyed within the testes:

______à______à ______à ______à______

8)  Starting with the efferent ductules (the first duct) name the order of the ducts traversed by sperm from their formation to their expulsion; also include their major function:

_efferent ductules_ :

______:

______:

______:

ACCESSORY GLANDS:

1)  Fill in the table below with info relating to the male reproductive accessory glands:

Gland / Products / % of Semen Volume

2) Define the primary function of each seminal component/property below:

Fructose: Antibiotics:

Relaxin: Stickiness:

Prostaglandins: Fibrinolysin:

Alkalinity:

PENILE ANATOMY:

1)  The penis consists of a ______and a ______that ends in the ______. The area of loose skin normally removed during circumcision is the ______.

2)  What is the function of the crura?

3)  Name the sections of erectile tissue found in the penile shaft:

SPERMATOGENESIS:

1)  Trace the process of spermatogenesis, beginning with the diploid spermatogonium:

2n (Spermatogonium) ______

______

______

______

______

______

______

2)  List some major functions of the sertoli/sustenacular cells that support spermatogenesis:

3)  List some major functions of the leydig/interstitial cells that support spermatogenesis: