Chapter 27 - Reproductive System Flashcards
What are the functions of the reproductive system?
Produce some reproductive hormones, produce gametes, facilitate fertilaztion, proivde nutrients and gestate fetus, provide nutrients for newborn.
Functions of the male reproductive system?
Produce & maintain gametes, transport gametes into female for fertilization, and secrete sex hormones.
What are suspended by a spermatic cord within scrotum?
Testes.
What do testes do?
Produce sperm and male sex hormones.
What hormones to testes produce?
Androgens such as testosterone.
What does testosterone do in fetal development?
Stimulate formation of reproductive organs and stimulate descent of testes.
What does testosterone do during puberty?
Stimulate development of secondary sex characteristics, increase cellular metabolism, increase production of RBCs, and stimulate sexual activity.
What is the scrotum?
Pouch of skin inferior to perineum and each testis occupies a scrotal cavity.
What are the 3 structures of the scrotum?
Tunica vaginalis, dartos muscle, and cremaster muscle.
What is the tunica vaginalis?
Serous membrane surrounding each testis.
What does the dartos muscle do?
Wrinkling of scrotum.
What does the cremaster muscle do?
Elevates testes closer to body to keep them at the proper temperature.
Where does the spermatic cord extend?
Through the inguinal cavity.
What comprises the spermatic cord?
Vas deferens, gentiofemoral nerve, differential artery, testicular artery, and pampiniform.
What do lobules in the testes house?
Seminiferous tubules.
How are lobules separeted from one another?
Tunica albuginea.
How many coiled tubes per tubule?
About 800.
What does each tubule straighten into?
Straight tubule.
What is the maze called that straight tubules meet?
Rete testis.
Where are intestitial cells located and what do the produce?
Found in between the tubules and produce testosterone.
What is spermatogenesis?
The process where sperm cells are made.
Where does spermatogenesis occur?
In the seminiferous tubules.
When does meiosis occur during spermatogenesis?
Midway through and results in haploid sperm.
What are nurse cells stimulated by during spermatogenesis?
Stimulated by FSH and testosterone.