BIO202 Lab 18 Complete

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Lab 18 The Reproductive System BIO202L Student Name: Narek Hakobyan Access Code (located on the lid of your lab kit): AC-NFDQUK Lab Report Format Expectations Utilize college level grammar and professional formatting when completing this worksheet. Submissions without proper formatting, all required photos or sufficient responses will be rejected. Pre- lab Questions 1. Oogenesis and spermatogenesis are related in that they both ultimately produce haploid cells and share similar meiotic and mitotic cell division, but there are significant differences between the two. Discuss these similarities and differences below in your own words. Focus on the timing, steps and phases of these processes in order to compare and contrast them. (Hint: Your response should be 6-10 sentences in length.) Sometimes, a diploid gamete cell can make haploid and egg cells. This process is called gametogenesis, which is also called spermatogenesis and oogenesis. I'll tell the difference between the two kinds of Gametogenesis. To put it more simply, gametogenesis is the process of making sperm and eggs through meiosis. There is oogenesis in the ovaries. During the early stages of oogonium, it will go through mitosis and then make up to two million eggs in the baby. Spermatogonia go through mitosis and make sperm during the Spermatogenesis process.

Lab 18 The Reproductive System BIO202L EXPERIMENT 1: MICROSCOPIC ANATOMY OF THE REPRODUCTIVE SYSTEM Data and Observations 1. Label the arrows in the following two slides. A. Corpus Spongiosum B. Septa C. Seminiferous tubules D. Flagella E. Midpiece F. Head G. Myometrium H. Endometrium I. Perimetrium

Lab 18 The Reproductive System BIO202L

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Lab 18 The Reproductive System BIO202L

Lab 18 The Reproductive System BIO202L Results and Discussion 1. What type of epithelium did you observe in the prepared slide of the penis? The penis slide showed a squamous epithelium that was layered and keratinized. 2. Which layer of the uterus forms a new functional layer each month? The deepest layer of the uterus is called the endometrium. It changes because of changes in hormones, such as the cycle. For the average woman, this happens once a month. The endometrium is the layer that regularly grows a new layer that works at least once a month. During your period, a layer like the uterus will shed and be replaced by a new one. This is done so that the body is ready for an egg to grow. It is important for a woman's reproductive health that the endometrium is healthy because this tissue is very important and is controlled by hormones throughout the month.

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Lab 18 The Reproductive System BIO202L EXPERIMENT 2: VIRTUAL MODEL - THE REPRODUCTIVE SYSTEM Introduction Questions 1. How is the reproductive system unlike the other systems of the body? Focus on the purpose of this system as compared to the others in your response. ( Hint : This difference is discussed in the lab materials.) The main thing that sets the reproductive system apart from the rest of the body is what it does. The main job of the reproductive system is to make babies so that the human species can survive. That is to pass on a gene from one generation to the next. Other body systems, like the integumentary system, gut system, circulatory system, and others, work to keep the body in balance so that the person can stay alive. In addition to having different jobs, the reproductive system makes haploid cells with 23 chromosomes, while the other body systems make diploid cells with 46 chromosomes.

Lab 18 The Reproductive System BIO202L Data and Observations Insert screenshot of the seminal vesicle below.

Lab 18 The Reproductive System BIO202L Insert screenshot of the epididymis below.

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Lab 18 The Reproductive System BIO202L Insert screenshot of the corpus luteum:

Lab 18 The Reproductive System BIO202L Insert screenshot of the endometrium below.

Lab 18 The Reproductive System BIO202L Results and Discussion 1. What is the most superior part of the male reproductive system? What is the most superior part of the female reproductive system? The ductus deferens for males and The fundus for females. 2. Which component of the female reproductive tract is more medial: the corpus luteum or the myometrium? The myometrium is further to the middle of the uterus than the corpus luteum. 3. How many seminal vesicle(s) are there in the male reproductive system? In a man's reproductive system, there are two seminal grooves. 4. Relate the location of the myometrium to the endometrium. In women, the uterus is the small, muscle part that helps them have babies. It is located in the groin. Initiation of an egg and provision of room for the baby's growth are both its jobs. 5. Relate the location of the prostate to the deferent duct. The ejaculatory duct is made up of the deferent duct, which links the seminal vesicle's excretory tubes to the testis. It gets wider between the ureters and the prostate in a place called the ampulla.

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Lab 18 The Reproductive System BIO202L EXPERIMENT 3: FETAL PIG DISSECTION - THE REPRODUCTIVE SYSTEM Introduction Questions 1. As stated in Step 4 of the experimental procedure, you should have already determined the sex of your pig. If you have not, do this before beginning the experiment as this will determine which set of procedures you execute. State the sex of your pig, below, and discuss how you determined this. Male, because I noticed the reproductive organ the penis 2. What is meant by urogenital opening? You will need to identify this in order to begin your experiment. The urogenital opening is a part of the anatomy in some animals that serves a dual purpose for the excretion of both urine from the urinary system and gametes (either sperm or eggs) from the reproductive system.

Lab 18 The Reproductive System BIO202L Data and Observations Insert a high resolution photo of the fetal pig you observed at the end of the experimental procedure, before you prepare it for storage . Your photo must include: ● Your handwritten name and access code must be clearly visible in the background. ● The required anatomical features as stated in either Step 8 for a male pig, or step 5 for female pig. You must have the correct anatomical features shown for credit. Photos not meeting these requirements, or that are of too low a resolution to clearly make out these features, will result in this lab submission being rejected.

Lab 18 The Reproductive System BIO202L Results and Discussion 1. Describe any observations you made while dissecting the reproductive system of your pig. Inside the body, the scrotum was long, and the testicles were lined up instead of hanging down. They had a lot of tissue inside the body to protect the penis. 2. Why do most male mammals have testes in an external sac? Most male animals, including humans, have their testes in the scrotum, which is an external sac. There are several reasons for this. Controlling temperature: Spermatogenesis, the process of making sperm, needs a temperature that is slightly lower than the body's core temperature. By hanging the testes outside the body in the scrotum, they are exposed to a cooler environment that helps them make the most sperm. The scrotum protects the testicles by adding an extra layer of skin, making them less likely to get hurt or damaged. The testes would be more likely to get hurt if they were kept inside the body. 3. What are two functions of the vagina? The vagina plays two important roles in a woman's reproductive system. During sexual activity, the penis is put into the vagina, which is the female reproductive system. In order for ovulation to happen, it lets sperm move from the male's reproductive system to the female's reproductive tract. When a woman gives birth, her vagina opens up to make room for the baby to move from the uterus to the outside world. This allows for a vaginal birth because it can stretch and shrink to fit the baby's head and body.

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BIO202 Lab 18 Complete

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