X hits on this document

109 views

0 shares

0 downloads

0 comments

12 / 34

CHAPTER 22: THE REPRODUCTIVE SYSTEMS

IV.Male Reproductive Organs (continued): See Fig 22.1, page 882.

B.Epididymis: Also see Fig 22.12, page 890.

1.tightly coiled tube leading to vas deferens;

2.site of storage of sperm cells.

C.Vas (Ductus) Deferens: Also see Fig 22.13, page 890.

1.muscular tube which passes upward from testis, passes through parietal peritoneum (inguinal canal) and into abdominal cavity;

*The vas deferens, along with a testicular artery, autonomic nerves, testicular veins, lymphatic vessels, and the cremaster muscle pass upward within the inguinal canal and compose the spermatic cord; See Fig 22.2c, page 883.

2.fuses with duct from seminal vesicle to form ejaculatory duct (within prostate gland).

3.site of Vasectomy.

D.Seminal Vesicle:  

1.sac-like structure attached to vas deferens;

2.secretes an alkaline fluid that is rich in nutrients (fructose for sperm energy).

E.Prostate Gland: Also see Fig 22.14, page 891.

1.surrounds urethra below bladder;

2.secretes a milky, alkaline fluid which enhances sperm motility.

F.Bulbourethral Glands:  

1.two small structures beneath prostate;

2.secrete lubricant for penis.

* Semen  =sperm cells (from testes), alkaline fluids (from prostate), fructose (from seminal vesicle) and lubricant (from bulbourethral).

G.Scrotum:

1.pouch of skin and subcutaneous tissue that encloses the testes;

2.The cremaster muscle is an extension of the internal oblique muscle that elevates the scrotum during sexual arousal and on exposure to cold.

Document info
Document views109
Page views109
Page last viewedSun Dec 11 06:16:22 UTC 2016
Pages34
Paragraphs725
Words5435

Comments