2. Complete the following table. Function b. a. d. Erectile tissue C. Cremaster

Question

2. Complete the following table. Function b. a. d. Erectile tissue C. Cremaster muscle e. h. Ejaculatory duct 9 3. If one or both testes do not complete the migration into the scrotum and remain in the abdominal cavity, they must be surgically moved into the scrotum. If the testes remain in the abdominal cavity, the individual will become sterile. Explain why. QUESTIONS 4-11: Match the structure in column A with the appropriate description in column B. a. In addition to the urethra, this muscular duct travels through the 4. Testis 5. Ductus deferens 6. Scrotum 7. Urethra 8. Ejaculatory duct 9. Penis prostate gland. b. Spermatozoa become functionally mature while in this structure. c. This structure has a urinary and reproductive function. d. The corpus spongiosum is found in this structure. e. Interstitial (Leydig) cells, found in this structure, produce testosterone. 10. Epididymis 11. Seminal gland_ f. This structure transports sperm cells from the epididymis to the ejaculatory duct g. This two-chambered structure contains the testes. h. Secretions from this structure are a component of semern EXERCISE 31 The Male Reproductive System 563

Explanation / Answer

seminiferous tubule:located within testis.it produces sperm,maintain sperm and store sperm

erectile tissue:located inside penis.for reproduction

cremaster muscle:it covers testis,moves testis,promote healthy,motile sperm.

ejaculatory duct:when seminal vessicles merges with vas deferens.opens urethra in seminus colliculus

question 3

if testis remains in abdominal cavity,individual will become sterile beacuse internal body temperature(10-30 degree celcius) is too high for development of sperm

question 4

4.testis :interstitial cells found here,produces testosterone

5.ductus defernce:carries sperm from epididymis to ejaculatory duct

6.scrotum:This two chamber structure contains testis

7.urethra:structure has urinary and reproductive function

8.ejaculatory duct:in addition to urethra muscukar duct travels through prostate gland

9.penis:corpus spongiosum found instructure

10.epidydymis:sperm gets mature here

11.seminal gland:secretion from this are component of semen

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