3. Read the following passage: When oestrogen concentration is high it stimulates the release of LH. LH stimulates the ovaries to release more oestrogen. State whether this is an example of negative or positive feedback and which organs are involved. Explain your answer. (AC1.2).
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- Explain what the hormones LH and FSH does to the male and female body. What do each secrete? How does each affect the body?1a) State the organ of origin of the following hormones and the function for: GnRH, FSH, LH, Estrogen, and Progesterone. 1b) The menstrual cycle contains both positive and negative feedback loops. Explain how. Please frame your answer using the “monitor -> control centre -> effector” scheme.Explain the relationship of the following pairs of terms. Briefly explain its relations 1.) Positive Feedback and oxytocin 2.) Negative Feedback and insulin 3.) Ovary and estrogen 4.) Testis and testosterone 5.) Neuron and nerve impulse
- Direction: Determine the principal action of the hormones in Column A. Identify its major action (Column B) and the gland that makes each hormone in Column C. Only write the letter. Answer Hormone Major action Gland 1. Estrogen a. Stimulates growth of the uterine lining h. Testes 2. FSH b. Stimulates milk secretion i. Anterior pituitary 3. LH c. Stimulates growth of ovarian follicle j. Scrotum 4. Progesterone d. Stimulates milk production k. Mammary 5. Oxytocin e. Stimulate sperm production characteristics I. Posterior pituitary 6. Prolactin f. Stimulate fermale development and behavior m. Prostate g. Stimulates ovulation n. OvaryDescribe the mechanisms of erection, ejaculation, and orgasma. Explain how portions of these are controlled by the sympathetic and parasympatheticsubdivisions of the autonomic nervous systems, and name the effector organs involved. b. How are these different in males and females, if at all?List the hormones of the female reproductive systemand explain their functions and how their secretion isregulated.
- What is LH? Which gland secretes it? Explain the target organs/cells of LH and its respective function in the female and male reproductive systemDescribe the main actions performed by oxytocin. Why parturition can occur without elevated levels of plasma oxytocin?A. Complete the following table by identifying the feedback mechanism involve in the following situations. SITUATION 1. The hypothalamus produces gonadotropin-releasing hormone IGnRHI. The GnP.H signals the pituitary to produce follicle-stimulating hormone IFSlil which stimulates the ovaries to produce estrogen. High levels of estrogen prevent the production of GnRH and causes the pituitary to make less FSH. FEEDBACK MECHANISM 1 what might happen to a person who's nervous and endocrine systems fail to maintain hemeostasis?
- Describe the negative feedback mechanisms that control the secretion of FSH and LH in females.Predict the effect on LH and FSH secretion if a small tumor in thehypothalamus continuously secretes large concentrations of GnRH.Given that LH and FSH regulate the function of the male and femalereproductive systems, state whether the condition will increase ordecrease the activity of these systemsName one female sex hormone which is maintained at high levels throughout pregnancy. State two important functions of the hormone in pregnant women.