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A&P II Chapter28M SG
Reproductive Study Guide (Male)
Question | Answer |
---|---|
What are the primary reproductive organs in the male? | Testes |
What are the secondary reproductive organs in the male? | Ducts and tubules, accessory glands, penis, scrotum |
What is the function of the scrotum? | Lower the temperature of the testes |
What is the smooth muscle layer that causes the scrotum to expand and contract? | Dartos muscle |
What is the spermatic cord? | Encloses the structures that extend to the testes |
List the four structures contained in the spermatic cord: | Testicular artery, pampiniform plexus, vas deferens, autonomic nerves to the testes |
What is the purpose of the pampiniform plexus? | Cool arterial blood coming in |
What is spermatogenesis? | Sperm production |
What is the primary androgen produced by the testes? | Testosterone |
What forms the covering of the testes? | Tunica vaginalis |
What is the tunica vaginalis derived from? | The peritoneum |
How many layers compose the tunica vaginalis? | Two |
What is the white connective tissue capsule that forms the septa to divide the testes into lobules? | Tunica albuginea |
How many lobules are in each test? | About 250 |
What do the lobules contain? | Seminiferous tubules |
What are the two types of cells in the seminiferous tubules? | Sustentacular cells and germ cells |
What do the germ cells produce? | Sperm |
What is the function of the sustentacular cells (Sertoli cells)? | Provide a protective environment for developing sperm cells |
Which cell is found between the seminiferous tubules? | Interstitial cells |
What do interstitial cells produce? | Testosterone |
Which organ releases FSH and LH? | Anterior pituitary |
What are the target cells of FSH and LH? | Interstitial (LH) and sustentacular (FSH) cells |
What is the action of LH? | Stimulates interstitial cells to secrete testosterone |
What are two effects of testosterone secretion? | Spermatogenesis, stimulates libido |
When does spermatogenesis begin? | Puberty |
Where does spermatogenesis occur? | Seminiferous tubules |
What is a mature sperm cell called? | Spermatozoa |
What is the acrosome? | Forms over the nucleus and contains enzymes to digest the exterior of the ova |
What does the mid piece of the sperm contain? | Mitochondria |
What type of epithelium lines the epididymis? | Pseudostratisfied columnar epithelium with stereocilia |
What is the shape of the epididymis? | Comma-shaped |
What are the three parts of the epididymis? | Head, body, tail |
What are stereo cilia? | Long microvilli on epididymis |
What is the function of stereo cilia? | Propel sperm |
How long does it take for sperm to mature? | 2-3 weeks |
How How long are sperm alive? | Around 74 days |
Where does the vas deferens terminate? | Near the site where the bladder and prostate meet? |
List the three glands that produce seminal fluid: | Seminal vesicles, prostate gland, bulbourethral gland |
Why do the seminal vesicles produce fructose? | To nourish the sperm |
Why do the seminal vesicles produce prostaglandins? | Dilate the external os of the cervix |
Why does the prostate gland produce citric acid? | Nutrient for sperm |
What is PSA? | Prostate specific antigen |
Why does the prostate produce PSA? | Liquifies semen |
Why do the bulbourethral glands produce mucin? | Lubricate the urethra for passage of sperm |
How many sperm are in one ejaculate? | 200-500 million |
How many bodies of erectile tissue are found in the penis? | 3 |
What is fertilization? | The union of sperm and egg |