Lecture 15

Lecture 15 - Unit #7 Unit #7 Pelvic Cavity Pelvic Cavity...

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Unformatted text preview: Unit #7 Unit #7 Pelvic Cavity Pelvic Cavity The Reproductive System The Reproductive System Introduction Introduction The reproductive system is responsible for the production of offspring Reproductive organs = genitalia (which has internal & external components) Made up of: Primary sex organs Gonads Testes (males) and ovaries (females) Produce sex cells/gametes (sperm and ova) and sex hormones (endocrine glands) Accessory sex organs Various glands/ducts and external genitalia The Scrotum The Scrotum The scrotum is an outpocketing of the abdominopelvic wall An external location is required to reduce temperature for sperm production Two muscles allow for temperature control Dartos muscle (smooth muscle) wrinkles scrotal skin Cremaster musle (skeletal muscle) elevates testes Spermatic cord passes through the inguinal canal in abdominal wall Spermatic cord Cremaster muscle Superficial fascia containing dartos muscle Skin Scrotum Inguinal ligament Deep inguinal ring Spermatic cord in inguinal canal Superficial inguinal ring Spermatic cord in scrotum Fig. 25.2 Fig. 25.5 Testes Testes The testes (sing. = testis) are paired oval glands located in the scrotum Produce sperm & hormones Partially enclosed by the tunica vaginalis The testes are covered by the tunica albuginea a dense fibrous connective tissue Divides the testes into lobules each containing 1-4 tightly coiled seminiferous tubules Internal spermatic fascia Tunica vaginalis (from peritoneum) Tunica albuginea of testis Lobule Testis Septum Tunica albuginea Tunica vaginalis Cavity of tunica vaginalis Seminiferous tubule Fig. 25.2 Fig. 25.3 Duct System Duct System The sperm leaving the seminiferous tubules of the testes travel through the male reproductive ducts...
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Lecture 15 - Unit #7 Unit #7 Pelvic Cavity Pelvic Cavity...

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