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Chapter 16 Male Reproductive System. How Male Reproduction Works . The male reproductive system includes both and organs that, with the help of hormones, allow physically mature males to produce children. How Male Reproduction Works.
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How Male Reproduction Works The male reproductive system includes bothand organs that, with the help of hormones, allow physically mature males to produce children.
How Male Reproduction Works The two main functions of the male reproductive system are to: 1) 2) transfer them to the female’s body during sexual intercourse. Sperm
How Male Reproduction Works Hormones produced in the pituitary gland stimulate the production of, which initiatesthat signal maturity. Testosterone
How Male Reproduction Works Testosterone may spur the development ofin adolescence.
External Reproductive Organs A male’s external reproductive organs include the testes, the penis, and the scrotum. Testes
External Reproductive Organs The testes are located in the scrotum. Scrotum
External Reproductive Organs • Scrotum Sac • Protects sperm by keeping testes slightly below the normal body temp • When body temp rises,attached to the scrotum sac relax – causing the testes to lower • When body temp, muscles tighten – moving testes to move closer to the body
External Reproductive Organs Theis composed of spongythat contains many . Penis A tube-shaped organ that extends from the trunk of the body just above the testes
External Reproductive Organs • Foreskin • Surgical removal of the foreskin of the penis at birth
External Reproductive Organs • When blood flow to the penis increases, it become enlarged and erect – causing an erection • Erections are • Occur more easily & more frequently during puberty • Nocturnal emissions – an ejaculation that occurs when sperm are released during sleep • Normal occurrence • Relieves the build-up of pressure as sperm begin to produce during puberty
External Reproductive Organs When the penis becomes erect, semen can be ejected from the body. Semen
What makes up semen • Sperm must travel through the: vas deferens seminal vesicles Cowper’s glands before they are released from the body.
External Reproductive Organs • E • A series of muscular contractions after a sexual arousal • F • the joining of a male sperm cell and female egg
Maintaining Reproductive Health Male reproductive health involves care and monitoring throughout a male’s lifetime. As with any other body system, the male reproductive system needs care.
Maintaining Reproductive Health Tips for Maintaining Your Reproductive Health Wear protective equipment. Perform regular self-examinations.
Male Reproductive System Problems The organs of the male reproductive system can be affected by both functional and structural problems. Males should watch for the signs of reproductive system problems, as well as signs of infections from STDs.
Male Reproductive System Problems Anoccurs when part of the intestines push through a tear in the abdominal wall. Surgery canan inguinal hernia.
Male Reproductive System Problems Sterility occursas a result of too few sperm or sperm of poor quality. Sterility
Male Reproductive System Problems • What causes sterility • Exposure to: • Toxic chemicals • Lead • Other causes: • Hormonal imbalances • Mumps contracted during adulthood
Male Reproductive System Problems With early detection, most testicular cancer isthrough surgery, radiation, or chemotherapy. Figure skater and Olympic gold medalist Scott Hamilton is a testicular cancer survivor.
How to Do a Testicular Self-Exam (TSE) The American Cancer Society recommends that males perform afor testicular cancera month.