Reproductive Systems

After reviewing and studying this module’s content, answer the following questions. Be sure to complete all lab activities and attend/watch all live lectures before completing this assignment. All of your answers should be written in your own words, using full sentences, correct terminology, and proper spelling and grammar.

  1. Explain the anatomical concepts associated with the reproductive system. Summarize this module’s key points in 5-6 sentences.
  2. Explain the physiological concepts associated with the reproductive system. Summarize this module’s key points in 5-6 sentences.
  3. How will you apply the concepts you have learned about the reproductiveMales and females both have primary reproductive organs called gonads, and secondary reproductive organs (ducts, glands, and external genitalia). Yet, particularly after puberty, male and female differences emerge. In this section, we will examine the anatomical elements of both the male and reproductive systems.

    Male Reproductive Organs

    The male reproductive organs include primary sex organs (gonads) called testes, as well as secondary organs. Secondary organs include the scrotum, male duct system, penis, and glands. The three major male reproductive accessory glands are the prostate, seminal vesicles, and bulbourethral glands.

     

    Encyclopedia Britannica. (2016). Male reproductive system [Illustration]. Britannica ImageQuest. https://go.openathens.net/redirector/rasmussen.edu?url=https%3A%2F%2Fquest-eb-com.eu1.proxy.openathens.net%2Fsearch%2Fmale-reproductive-system%2F1%2F309_365517%2FMale-reproductive-system%2Fmore

    Testicles

    The primary sex organs, testicles, come in a pair; they are made up of hundreds of seminiferous tubules which produce sperm. The seminiferous tubules transport sperm to the epididymis. The two types of cells within the seminiferous tubules are the germ cells, which mature into sperm, and the Sertoli cells, which support sperm development. Additional endocrine cells, Leydig cells, lie outside the seminiferous tubules. The Leydig cells produce testosterone.

    image1

    Openstax. (2013). Testicle anatomy [Illustration]. Wikimedia Commons. https://en.wikipedia.org/wiki/Testicle#/media/File:Figure_28_01_03.JPG

    The testicles’ surface is covered by a tunica albuginea, and then the scrotum. The scrotum’s location outside the abdominal cavity is critical for temperature regulation, as sperm require a temperature slightly lower than body temperature. The scrotum contains muscles and blood vessels to fine-tune temperature regulation.

    · The dartos muscle can wrinkle the scrotum’s surface, therefore decreasing its surface area to promote heat retention.

    · The cremaster muscle elevates the testes, and can serve to promote heat retention in cold conditions.

    · The pampiniform venous plexus can, conversely, cool incoming blood due to its location surrounding the testicular artery.

    image2

    Openstax. (2013). Musculature and inner workers of the scrotum [Illustration]. Wikimedia Commons. https://upload.wikimedia.org/wikipedia/commons/5/53/Figure_28_01_02.JPG

    Each testicle’s posterior side contains a 20-foot coiled cord-like structure called the epididymis. The epididymis is where sperm cells mature. They take 20 days to pass through the epididymis. To exit the body, the sperm pass through additional ducts: ductus deferens (also called the vas deferens), the ejaculatory duct, and the urethra (which is shared with urine). The penis encases the ducts.

    Sperm

    Sperm make up only 10% of ejaculation, as male accessory glands create additional fluids to comprise seaman. Seminal vesicles secrete yellowish fructose-based alkaline liquids that comprise 60% of the semen volume. This fluid enhances sperm mobility within the female’s reproductive tract. The prostate secretion is a milky white substance that comprises 30% of the semen volume; it is nutrient-rich to support the sperm. The bulbourethral glands produce a small amount of additional clear fluid for lubrication.

    image3

    Male anatomy [Illustration]. (2003). Wikimedia Commons. https://commons.wikimedia.org/wiki/File:Male_anatomy.png

    Female Reproductive Anatomy

    Like males, females have both internal and external reproductive anatomy. Internal female anatomical instructions include ovaries, ovarian tubes (also called fallopian tubes), the uterus, and the vagina. Externally, females have a clitoris and labia.

    image4

    Typical sites for pelvic inflammatory disease [Illustration]. (2014). Wikimedia Commons. https://commons.wikimedia.org/wiki/File:Male_anatomy.png

    Ovaries

    The female primary sex organs (gonads) are called ovaries. They produce both eggs and sex hormones (progesterone and estrogen). The two ovaries are quite small, each being roughly the size of two almonds. They are not free-floating, as many ligaments support them. These ligaments include the ovarian ligament, suspensory ligament, broad ligament, and mesovarium.

    Ovaries contain immature eggs (oocytes), each of which is surrounded by supporting granulosa cells and a follicle. Each month, one of these follicles is ovulated into a fallopian tube connected to the uterus.

    The Uterus

    The uterus is largely made of smooth muscle located between the bladder and rectum. Like kidneys, the uterus has three regions and three layers. The three regions are the fundus, body, and cervix. The three layers, from superficial to deep are the perimetrium, myometrium, and endometrium.

    image5

    Encyclopedia Britannica. (2016). Female reproductive system [Illustration]. Britannica ImageQuest. https://go.openathens.net/redirector/rasmussen.edu?url=https%3A%2F%2Fquest-eb-com.eu1.proxy.openathens.net%2Fsearch%2Ffemale-reproductive-system%2F1%2F309_1156355%2FFemale-reproductive-system

    The Vagina

    The uterus leads to the vagina. The vagina is located between the rectum and bladder. It serves as a pathway for intercourse, menstruation, and the birthing process. In the next section, we will examine the menstrual process in further detail.

    system in real life and in your future career?

  4. Which topic within this module has been the most valuable to your learning experience and why?
  5. Which topic(s) within this module did you struggle to understand and why?
  6. (Optional) Do you have any suggestions for your instructor on how they could help you connect with the difficult topics you’ve noted?

 

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