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Male Reproductive System
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Introduction The male sex cell is called a spermatozoon, or sperm cell. The sperm cell carries its nuclear hereditary material, or chromosomes, in its head region. The tail consists of a flagellum, which makes the sperm cell mobile. Only one spermatozoon out of 300 million sperm cells released during ejaculation can fertilize a single female ovum. If more than one egg is present in the fallopian tubes during ejaculation, multiple fertilizations are possible. What are the parts of a sperm cell? What is the sperm cell’s purpose? How does the sperm navigate?
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Introduction Twins resulting from the fertilization of separate ova by separate sperm cells are called fraternal twins (2 separate amniotic sacs). Twins resulting from the fertilization of a single egg by a single sperm are called identical twins. The organs of the male reproductive system are designed to produce and release billions of sperm cells throughout the man’s lifetime. The hormone called testosterone is responsible for the bodily characteristics of the male (such as beard, pubic hair, and deeper voice). Describe the role of testosterone. What is the difference between the number of eggs vs. sperm cells?
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Anatomy Internal structure of the testis and the epididymis
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What Makes Up Semen? Fluid From:
Cowper’s Gland (aka bulbourethral gland) - Seminal Vesicle- Prostate Gland- SPERM (if no vasectomy)
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Anatomy The passage of sperm from the seminiferous tubules to the outside of the body
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Pathologic Conditions
How are carcinomas of the prostate and prostatic hyperplasia diagnosed? How are they treated?
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Pathologic Conditions
Circumcision: *Removal of the prepuce Hypospadias: *Surgical repair involves exciding a portion of the prepuce, wrapping it around a catheter, suturing it to the distal part of the urethra, bringing it to the end of the penis What are the odds of a male having hypospadias? How is hypospadias treated? How is phimosis treated?
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Laboratory Tests and Clinical Procedures
PSA test- Produced by cells within prostate gland. High levels associated w/ enlargement & may be sign of cancer. Semen analysis- sperm are counted for motility & shape, vasectomy effectiveness, sperm count less than 20 million/ml =sterile. What are the symptoms of a chlamydial infection? Gonorrhea? Herpes genitalis? Syphilis? What types of drugs are given to treat these infections? Which infections can occur without symptoms?
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Laboratory Tests and Clinical Procedures
Transurethral resection of the prostate—TURP; resectoscope contains light, valves to control fluid, and electrical loop to remove tissue. Clinical procedures Vasectomy What procedure treats prostatic hyperplasia (BPH)? How is it performed? What is the purpose of a digital rectal exam?
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