Male Reproductive System Chapter 7 Male Reproductive System Copyright © 2014, 2012, 2009, 2005, 2002, 1998, 1994, 1989, 1985 by Mosby, Inc., an affiliate of Elsevier Inc. All rights reserved.

Chapter 7 Objective 1: Identify organs and structures of the male reproductive system. Copyright © 2014, 2012, 2009, 2005, 2002, 1998, 1994, 1989, 1985 by Mosby, Inc., an affiliate of Elsevier Inc. All rights reserved.

Male Reproductive System Function The functions of the male reproductive system are: to produce, sustain, and transport sperm to secrete the hormone testosterone Sperm are the male reproductive germ cells What is the purpose of testosterone? Answer: Testosterone stimulates the development of the male reproductive organs and secondary sex characteristics, such as facial hair. Copyright © 2014, 2012, 2009, 2005, 2002, 1998, 1994, 1989, 1985 by Mosby, Inc., an affiliate of Elsevier Inc. All rights reserved.

Organs The organs of the male reproductive system include the external genitalia: the penis scrotum, within which are contained the testes and an initial section of the vas deferens The penis and urethra are shared with the urinary system. Copyright © 2014, 2012, 2009, 2005, 2002, 1998, 1994, 1989, 1985 by Mosby, Inc., an affiliate of Elsevier Inc. All rights reserved.

Organs (cont’d) Internally, the male pelvis includes: a major portion of the vas deferens the seminal vesicles the prostate gland. The penis and urethra are shared with the urinary system. Copyright © 2014, 2012, 2009, 2005, 2002, 1998, 1994, 1989, 1985 by Mosby, Inc., an affiliate of Elsevier Inc. All rights reserved.

Male Reproductive Organs What are the principal male reproductive organs? The urethra and penis are shared with the urinary system. Copyright © 2014, 2012, 2009, 2005, 2002, 1998, 1994, 1989, 1985 by Mosby, Inc., an affiliate of Elsevier Inc. All rights reserved.

Male Reproductive System testis, or testicle: primary male sex organs, paired, oval-shaped, and enclosed in a sac called the scrotum; produce sperm cells and the hormone testosterone. sperm (spermatozoon): the microscopic male germ cell, which, when united with the ovum, produces a zygote (fertilized egg) that with subsequent development becomes an embryo. testosterone: the principal male sex hormone When united with the ovum, a single sperm cell produces a zygote (fertilized egg) that develops to become an embryo. What is the principal male sex hormone? Testosterone stimulates the development of the male reproductive organs and secondary sex characteristics, such as facial hair. Copyright © 2014, 2012, 2009, 2005, 2002, 1998, 1994, 1989, 1985 by Mosby, Inc., an affiliate of Elsevier Inc. All rights reserved.

Male Reproductive System (cont’d) seminiferous tubules: up to 900 coiled tubes within the testes in which spermatogenesis occurs. epididymis: a coiled tube atop each of the testes that provides for storage, transit, and maturation of sperm; continues with the vas deferens. vas deferens, ductus deferens, or seminal duct: duct carrying the sperm from the epididymis to the urethra. (The urethra also connects with the urinary bladder and carries urine outside the body. A circular muscle constricts during intercourse to prevent urination.) Partial excision of the vas deferens (vasectomy) results in male sterilization. Copyright © 2014, 2012, 2009, 2005, 2002, 1998, 1994, 1989, 1985 by Mosby, Inc., an affiliate of Elsevier Inc. All rights reserved.

Male Reproductive System (cont’d) seminal vesicles: two main glands located posterior to the base of the bladder that open into the vas deferens. The glands secrete a thick fluid that forms part of the semen. prostate gland: encircles the upper end of the urethra. The prostate gland secretes a fluid that aids in the movement of the sperm and ejaculation. scrotum: sac containing the testes and epididymis; suspended on both sides of and posterior to the penis The urethra also connects with the urinary bladder and carries urine outside the body. A circular muscle constricts during intercourse to prevent urination. Copyright © 2014, 2012, 2009, 2005, 2002, 1998, 1994, 1989, 1985 by Mosby, Inc., an affiliate of Elsevier Inc. All rights reserved.

Male Reproductive System (cont’d) penis: male organ of urination and coitus (sexual intercourse) glans penis: enlarged tip on the end of the penis prepuce: fold of skin covering the glans penis in uncircumcised males (foreskin of the penis) semen: composed of sperm, seminal fluids, and other secretions genitalia (genitals): reproductive organs (male or female); may also be called gonads The prepuce is also called the foreskin. Copyright © 2014, 2012, 2009, 2005, 2002, 1998, 1994, 1989, 1985 by Mosby, Inc., an affiliate of Elsevier Inc. All rights reserved.

Chapter 7 Objective 2: Define and spell word parts related to the male reproductive system. Copyright © 2014, 2012, 2009, 2005, 2002, 1998, 1994, 1989, 1985 by Mosby, Inc., an affiliate of Elsevier Inc. All rights reserved.

Combining Forms for the Male Reproductive System balan/o epididym/o orchid/o, orchi/o, orch/o, test/o prostat/o vas/o vesicul/o Which of these forms means glans penis? Which of these forms refers to the testes? Which of these forms refers to a vessel or duct? Test/o is only used to build the term testitis (orchitis and orchiditis are synonyms). In all other instances, when embedded within a term and for surgical procedures, a form of orch/o (orch/o, orchid/o, or orchi/o) is used. Copyright © 2014, 2012, 2009, 2005, 2002, 1998, 1994, 1989, 1985 by Mosby, Inc., an affiliate of Elsevier Inc. All rights reserved.

Review Question Ask students to provide the combining forms. Answers: seminal vesicle: vesicul/o 2. prostate gland: prostat/o epididymis: epididym/o vas deferens or ductus deferens: vas/o glans penis: balan/o testis: orchid/o, orchi/o, orch/o, test/o Copyright © 2014, 2012, 2009, 2005, 2002, 1998, 1994, 1989, 1985 by Mosby, Inc., an affiliate of Elsevier Inc. All rights reserved.

Commonly Used with Male Reproductive System Terms Combining Forms andr/o sperm/o, spermat/o Suffix -ism What are some common words that use the combining form andr/o? Copyright © 2014, 2012, 2009, 2005, 2002, 1998, 1994, 1989, 1985 by Mosby, Inc., an affiliate of Elsevier Inc. All rights reserved.

Review Question Orchid/o, orchi/o, orch/o and test/o are all combining forms for testis, testicle. True False Answer: a) True Copyright © 2014, 2012, 2009, 2005, 2002, 1998, 1994, 1989, 1985 by Mosby, Inc., an affiliate of Elsevier Inc. All rights reserved.

Chapter 7 Objective 8: Interpret, read, and comprehend medical language in simulated medical statements, documents, and electronic health records. Copyright © 2014, 2012, 2009, 2005, 2002, 1998, 1994, 1989, 1985 by Mosby, Inc., an affiliate of Elsevier Inc. All rights reserved.

Interact with Medical Records CHIEF COMPLAINT: Severe lower abdominal pain and the inability to void for the past 12 hours. PRESENT ILLNESS: Andrew Nguyen is a 75-year-old male who presented to the emergency department at 0300 stating that he was in great pain and could not urinate. He had not been seen by a physician for several years but claimed to be in good health except for “a little high blood pressure.” The patient reports urinary frequency, nocturia x2, hesitancy, intermittency, and diminished force and caliber of the urinary stream. He also has postvoid dribbling and the sensation of not having completely emptied the bladder. Earlier today, he had hematuria at the end of urination. MEDICATION ALLERGIES: None CURRENT MEDICATIONS: Benadryl 25 mg at bedtime. PHYSICAL EXAM: Temperature 98.6ºF. Blood pressure 140/90. Pulse 98. Respirations 24. Palpation of the abdomen reveals a suprapubic mass approximately three fingerbreadths below the umbilicus, dull to percussion, and slightly tender. DRE reveals an enlarged prostate without hard nodules. IMPRESSION: Urinary bladder distention caused by urinary outlet obstruction. Benign prostatic hyperplasia is the probable diagnosis. PLAN: Indwelling Foley catheter for relief of urinary obstruction. Urology consult. Have students open their books and complete the corresponding exercise. Review correct answers. Ask students to pronounce and define the underlined terms. Copyright © 2014, 2012, 2009, 2005, 2002, 1998, 1994, 1989, 1985 by Mosby, Inc., an affiliate of Elsevier Inc. All rights reserved.