Feedback Loop Case Study

1737 Words4 Pages
bulb-icon

Recommended: human reproductive system

Case Study 1: Feedback Loops

What is a feedback loop?

A feedback loop maintains homeostasis by keeping variables within particular limits. They consist of a stimulus that produces a change in a variable where the change is then detected by a receptor. The receptor sends the information along an afferent pathway to a control centre where it decides how to react. The information is then output from the control center and sent along an efferent pathway to an effector. The effector creates a response to the stimulus and returns variable to homeostasis. (Homeostasis: positive/negative feedback mechanisms 2013)
What are the two sorts of feedback loops and how are they different?

The two sorts of feedback loops are negative feedback loops and positive feedback loops. Positive feedback loops are an amplification and are instant, but not sustained. They are about moving away from a target set point and occur when your body needs something done instantly. Usually, only one stimulus is needed to trigger. An example of a positive feedback loop would be contractions during childbirth. The …show more content…

FSH and LH start development of the follicle. After around 12 days the level of estrogen peaks. The high estrogen level has a positive feedback loop, which fuels the release of FSH and LH. The increase in LH causes the follicle to rupture, and the follicle cells that remain grow into the corpus luteum. When the follicle is mature, progesterone levels rise to stimulate the growth of the uterine lining in preparation for a fertilised egg. Progesterone has a negative feedback loop with the hypothalamus that inhibits GnRH, as well as FSH and LH. If there is no fertilisation, the levels of progesterone drop. This causes corpus luteum starts to shrink, endometrium breakdown, and menstruation begins. (The Ovarian And Menstrual Cycle 2013) (Hormones of the Reproductive System

Show More
Related

  • The Pros And Cons Of Menstruation

    1291 Words  | 3 Pages

    Both of the phases last from day 1 to day 13 of the menstrual cycle. The follicular phase initially involves the growth of primary follicles; these follicles subsequently develop vesicles and become secondary follicles. Towards the end of the follicular phase, one of the follicles gets mature and develops into a graafian follicle. As follicles grow, the granulose cells secrete estrogen. The hormone reaches its highest concentration two days before ovulation, which is at about day 12 of the cycle. According to Fox (1996), the growth of follicles and the secretion of estrogen are stimulated by follicle-stimulating hormone (FSH), a hormone released from the anterior pituitary gland. It is believed the amount of FSH secreted in the beginning of follicular phase is slightly larger than the amount secreted in the late follicular phase. Proliferative phase signifies endometrial changes, representing the restoration of the epithelium from the previous menstruation (Ganong, 2003). The rising serum estrogen concentration stimulates the proliferation of the uterine endometrium with the thickness of 1-4mm. As the thickness increases, the uterine glands are released so that the endometrium lengthens. However, the glands do not become convoluted or secrete to any degree (Welt, 2015). Estrogen in the blood is produced by the dominant ovarian

    Read More

  • Emotional Impact Of Menopause

    803 Words  | 2 Pages

    During menopause and in the perimenopausal years, the estrogen levels gradually decrease and the ovaries put out less progesterone. This results in a rise in FSH and LH, which can

    Read More

  • Homeostasis Essay

    2004 Words  | 5 Pages

    Homeostasis is the biological process that maintains a stable internal environment despite what occurs in the external environment. Chemicals and bodily functions are maintained in a balanced state so the body may function optimally. There are various systems in the human body that require maintenance through the processes of biochemical checks and balances so they may function properly. One of these systems includes the rise and fall of blood glucose and is under the control of the homeostatic regulation process. Homeostasis is essential in blood glucose regulation as high blood glucose levels (hyperglycaemia) and low blood glucose levels (hypoglycaemia) are dangerous and can affect the human body in many ways and can also lead

    Read More

  • Essay On Homeostasis

    770 Words  | 2 Pages

    There are many things that impact whether an organism maintains homeostasis or not. Some include: body temperature, water balance, blood sugar concentration, blood pressure and blood pH, and to maintain homeostasis must be regulated. These functions are controlled by negative feedback mechanisms. Feedback mechanisms are mechanisms that control and regulate processes and internal conditions in an organism. They respond to any stimulus

    Read More

  • Homeostasis

    1365 Words  | 3 Pages

    When something changes in the inner environment it sends information to the receptor. The receptor sends information to the control center and then the control center sends instructions to the effector once the information is received from the control center it proceeds to either oppose or increase the stimulus. This process is designed to repeatedly work at restoring or maintaining homeostasis.

    Read More

  • An Exploration of Endocrinology and Hormone Classes

    1226 Words  | 3 Pages

    Negative feedback occurs when a product feeds back to decrease its own production. This type of feedback brings things back to normal whenever they start to become too extreme One distinctive feature of hormones whose secretion is regulated through the hypothalamus and pituitary is that they regulate their own secretion through negative feedback inhibition. This means is that a hormone from a peripheral gland, for example, cortisol, binds to its receptor on cells in the hypothalamus and adenohypophysis, and has the effect of inhibiting secretion of tropic hormones which is corticotropin releasing hormone and adrenocorticotropic hormone. Less CRH secretion leads to less ACTH secretion, which leads to less stimulation of cortisol secretion by cells of the zona fasciculata of the adrenal

    Read More

  • The Menstrual Cycle In Women

    653 Words  | 2 Pages

    The follicular phase (Days 6 through 14) is the outcome of the ovarian cycle, and the menstrual preovulatory phase. During this phase the ovaries glands are maturing. In the follicular phase the process of the cells, glands and organs of the luteinizing hormone (LH), the follicle stimulating hormone (FSH) and oestrogen enables the maturation of the cavities, glands and sacs in the ovaries positioned through the womb to produce egg fertilization (Freudenrich 2014). In the middle of the cycle the egg that’s fertilized sends an cue or indication through the Luteinizing hormone and the Follicle stimulating hormone signaling the eggs produced in the female reproductive system to release the fertilize eggs. In which this is where the eggs travels through the fallopian tube and where it has a chance of merging with sperm in which this is the act of

    Read More

  • Essay On Homeostasis

    3427 Words  | 7 Pages

    Homeostasis mostly works through negative feedback, this is where the effectors response lessens the effects of the original stimulu...

    Read More

  • System Theory Case Study

    1093 Words  | 3 Pages

    Wilmot & Hocker discusses various ways to assess conflict particularly when we choose to intervene in other people’s conflicts. They discuss the system theory as one of the beneficial theories that can help us intervene when we have a conflict. A system theory is a full assessment of how the overall system works and finding communication patterns within the systems (Wilmot & Hocker, 2011). Understanding the nature of organizations can be important to a person who is trying to find out a more organized way to handle and intervene conflicts. Sometimes conflicts get to the point where you get so frustrated that it can become confusing or you can not see the interpersonal dynamics that occur. In our last unit, we learned that emotions could have

    Read More

  • An Overview of Polycystic Ovary Syndrome

    642 Words  | 2 Pages

    Carol Proth explains the development of the high androgens levels by the “increased release of LH [leutenizing hormone] in relation to FSH [follicle stimulating hormone] release, with a resu...

    Read More

  • Understanding the Hypothalamus: The Brain's Regulator

    802 Words  | 2 Pages

    Homeostasis is the way the body creates a stable environment for itself and all of the body's functions working together. Without homeostasis, blood pressure, hunger, heart rate, sleep cycles, and immune responses would be completely out of whack.

    Read More

  • Internal And External Structure Of The Female Reproductive System

    1612 Words  | 4 Pages

    A female egg is an important element in the reproduction process. They are produced at the time the child is born, meaning that each and every female baby is born with a set amount of eggs that she will release throughout her life. Egg cells are covered in a growth of epithelial tissue called follicle which will eventually release a mature egg. This dominant follicle is then instructed to begin dividin...

    Read More

  • Understanding Homeostasis: The Body's Balance

    1385 Words  | 3 Pages

    The genuine word homeostasis signifies "enduring state". Homeostasis depicts how the body directs its procedure to keep its interior conditions as steady as could be allowed. Homeostasis is important in light of the fact that human cells are proficient yet extremely requesting. The expression homeostasis is somewhat befuddling; conditions inside our bodies are not steady but rather are kept inside a restricted range. A few factors, for example, temperature and blood PH change somewhat while others, for example, blood glucose impressively all through a typical day without creating any unsafe impacts. A concise depiction of homeostasis is that it is support of a consistent inward condition in light of an adjustment in outer condition. Negative

    Read More

  • Frogs

    2395 Words  | 5 Pages

    ...per’s glands mix with sperm to form semen. Each testis made up of small, coiled tubes called the somniferous tubules. From there, the immature sperm pass through the epididymis, which is a storage area on the upper rear part of each testis. The vas deferens is a tube that leads upward from each testis into the lower part of the abdomen. The two vas deferens empty into the urethra. The female reproductive system is somewhat like that of the frogs. In the female reproductive system the ovaries produce the female sex hormones estrogen and progesterone. In the ovaries eggs mature in the follicles. Fertilization may occur when the follicle breaks and the egg is released into the oviduct.

    Read More

  • Human Blood Essay

    1048 Words  | 3 Pages

    Lastly, blood is involved in maintaining homeostasis by negative feedback loops such as temperature regulation, blood pH, blood glucose levels, and blood pressure.

    Read More

More about Feedback Loop Case Study

Open Document