Hormones related with male reproductive system

Male sexual development and hormonal function depend on a complex feedback circuit involving the hypothalamus-pituitary-testes modulated by the central nervous system. Erectile Dysfunction Erectile dysfunction is the inability to attain or sustain an erection satisfactory for sexual intercourse. Most erectile dysfunction is related to vascular, neurologic, psychologic, and hormonal... read more can be secondary to Male Hypogonadism Hypogonadism is defined as testosterone deficiency with associated symptoms or signs, deficiency of spermatozoa production, or both. It may result from a disorder of the testes (primary hypogonadism)... read more , neurovascular or other disorders, or medication or recreational drug use. The hypothalamus produces gonadotropin-releasing hormone (GnRH), which is released in a pulsatile fashion every 60 to 120 minutes. Its target organ, the anterior pituitary gland, responds to each pulse of GnRH by producing a corresponding pulse of luteinizing hormone (LH) and, to a lesser degree, follicle-stimulating hormone (FSH). If the GnRH pulses do not occur with the proper amplitude, frequency, and diurnal variation, Male Hypogonadism Hypogonadism is defined as testosterone deficiency with associated symptoms or signs, deficiency of spermatozoa production, or both. It may result from a disorder of the testes (primary hypogonadism)... read more may result (idiopathic hypogonadotropic hypogonadism). Continuous (as opposed to pulsatile) stimulation by GnRH ag...

What is testosterone? Testosterone is a Your Testosterone is the main Is testosterone a steroid? Natural testosterone is a steroid — an anabolic-androgenic steroid. "Anabolic" refers to muscle building, and "androgenic" refers to increased male sex characteristics. However, when you hear people use the term “ Healthcare providers use synthetic testosterone to treat and manage various medical conditions. Synthetic testosterone is the main drug of Some athletes and bodybuilders misuse synthetic testosterone (anabolic steroids) by taking very high doses of them in an attempt to boost performance or change their physical appearance. Misuse of these drugs can cause several unpleasant symptoms and lead to long-term dangerous health problems, including blood clots, stroke, and potentially increase the risk of prostate cancer. What does testosterone do? Testosterone has different roles in different life stages, including: • • • Adulthood. Testosterone and fetal development At around week seven in utero, the sex-related gene on the Y chromosome initiates the development of the testicles in male infants. The testicles produce testosterone. Testosterone triggers the development of the male internal and external reproductive organs during fetal development. Testosterone and puberty Testosterone is responsible for many of the changes seen in children assigned male at birth during puberty, including: • An increase in height. • Body and pubic hair growth. • Enlargement of their • Increas...

Androgens like testosterone are sex hormones. Androgens help people enter puberty and mature physically. Females with high androgen levels may develop acne, facial hair and other issues. Males with too little androgen may have low sex drives and develop breasts (gynecomastia). Adrenal gland tumors and other conditions can affect androgen levels. What are androgens? Androgens are a group of sex hormones. They help start puberty and play a role in reproductive health and body development. All genders make androgens, but males make more of them. The testicles in the What are the types of androgens? Testosterone is the predominant androgen in all genders. Other androgens include: • Androstenedione. • Dehydroepiandrosterone (DHEA). • DHEA sulfate (DHEA-S). • What is the role of androgens? In all genders, androgens help with: • Bone density. • Muscle development. • Puberty. • Red blood cell production. • Sexual desire and function. What is the role of androgens in men? In people assigned male at birth (AMAB), androgens contribute to: • Deep voice (vocal cord lengthening). • Hair growth on the face, scalp, chest, underarms and genitals. • Sperm development. What is the role of androgens in women? In people assigned female at birth (AFAB), other body chemicals convert androgen into estradiol, a form of estrogen. This hormone: • Regulates • Aids • Minimizes bone loss ( • Stimulates pubic and underarm hair growth. How do healthcare providers measure androgen levels? Your healthcare ...

a. Hormones related with male reproductive system- testosterone b. Hormones secreted by ovary of female reproductive system- estrogen and progesterone c. Types of twins- Monozygotic and dizygotic twins d. Any two sexual diseases- AIDS and Gonorrhea e. Methods of family planning- Oral pills, condoms, IUD's Q. The diagram alongside represents two reproductive cells A and B. Study the same and then answer the questions that follow: [5 MARKS] (a) Identify the reproductive cells A and B. (b) Name the specific part of the reproductive system where the above cells are produced. (c) Where in the female reproductive system do these cells unite? (d) Name the main hormones secreted by the (1) ovary (2) testes. (e) Name an accessory gland found in the male reproductive system and state the function of its secretion. Q. The diagram below represents two reproductive cells A and B. Study the same and then answer the questions that follow : (a) Identify the reproductive cells A and B. (b) Name the specific part of the reproductive system where the above cells are produced. (c) Where in the female reproductive system do these cells unite ? (d) Name the main hormones secreted by the (1) ovary (2) testes. (e) Name an accessory gland found in the male reproductive system and state the function of its secretion.

Overview Nearly 1 in 7 couples is infertile, which means they haven't been able to conceive a child even though they've had frequent, unprotected sexual intercourse for a year or longer. In up to half of these couples, male infertility plays at least a partial role. Male infertility can be caused by low sperm production, abnormal sperm function or blockages that prevent the delivery of sperm. Illnesses, injuries, chronic health problems, lifestyle choices and other factors may contribute to male infertility. Symptoms The main sign of male infertility is the inability to conceive a child. There may be no other obvious signs or symptoms. In some cases, however, an underlying problem such as an inherited disorder, hormonal imbalance, dilated veins around the testicle or a condition that blocks the passage of sperm causes signs and symptoms. Signs and symptoms you may notice include: • Problems with sexual function — for example, difficulty with ejaculation or small volumes of fluid ejaculated, reduced sexual desire, or difficulty maintaining an erection (erectile dysfunction) • Pain, swelling or a lump in the testicle area • Recurrent respiratory infections • Inability to smell • Abnormal breast growth (gynecomastia) • Decreased facial or body hair or other signs of a chromosomal or hormonal abnormality • A lower than normal sperm count (fewer than 15 million sperm per milliliter of semen or a total sperm count of less than 39 million per ejaculate) When to see a doctor See a...

Theme 5: How Do We Control Our Fertility? 5.4 Hormonal Control of Human Reproduction The human male and female reproductive cycles are controlled by the interaction of hormones from the hypothalamus and anterior pituitary with hormones from reproductive tissues and organs. In both sexes, the hypothalamus monitors and causes the release of hormones from the pituitary gland. When the reproductive hormone is required, the hypothalamus sends a gonadotropin-releasing hormone (GnRH) to the anterior pituitary. This causes the release of follicle stimulating hormone (FSH) and luteinizing hormone (LH) from the anterior pituitary into the blood. Note that the body must reach puberty in order for GnRH to be produced. Although FSH and LH are named after their functions in female reproduction, they are produced in both sexes and play important roles in controlling reproduction. Other hormones have specific functions in the male and female reproductive systems. * Male Hormones At the onset of puberty, the hypothalamus causes the release of FSH and LH into the male system for the first time. FSH enters the testes and stimulates the Sertoli cells to begin facilitating spermatogenesis using negative feedback, as illustrated in Figure 1. LH also enters the testes and stimulates the interstitial cells of Leydig to make and release testosterone into the testes and the blood. Testosterone, the hormone responsible for the secondary sexual characteristics that develop in the male during adolesce...

Theme 5: How Do We Control Our Fertility? 5.4 Hormonal Control of Human Reproduction The human male and female reproductive cycles are controlled by the interaction of hormones from the hypothalamus and anterior pituitary with hormones from reproductive tissues and organs. In both sexes, the hypothalamus monitors and causes the release of hormones from the pituitary gland. When the reproductive hormone is required, the hypothalamus sends a gonadotropin-releasing hormone (GnRH) to the anterior pituitary. This causes the release of follicle stimulating hormone (FSH) and luteinizing hormone (LH) from the anterior pituitary into the blood. Note that the body must reach puberty in order for GnRH to be produced. Although FSH and LH are named after their functions in female reproduction, they are produced in both sexes and play important roles in controlling reproduction. Other hormones have specific functions in the male and female reproductive systems. * Male Hormones At the onset of puberty, the hypothalamus causes the release of FSH and LH into the male system for the first time. FSH enters the testes and stimulates the Sertoli cells to begin facilitating spermatogenesis using negative feedback, as illustrated in Figure 1. LH also enters the testes and stimulates the interstitial cells of Leydig to make and release testosterone into the testes and the blood. Testosterone, the hormone responsible for the secondary sexual characteristics that develop in the male during adolesce...

a. Hormones related with male reproductive system- testosterone b. Hormones secreted by ovary of female reproductive system- estrogen and progesterone c. Types of twins- Monozygotic and dizygotic twins d. Any two sexual diseases- AIDS and Gonorrhea e. Methods of family planning- Oral pills, condoms, IUD's Q. The diagram alongside represents two reproductive cells A and B. Study the same and then answer the questions that follow: [5 MARKS] (a) Identify the reproductive cells A and B. (b) Name the specific part of the reproductive system where the above cells are produced. (c) Where in the female reproductive system do these cells unite? (d) Name the main hormones secreted by the (1) ovary (2) testes. (e) Name an accessory gland found in the male reproductive system and state the function of its secretion. Q. The diagram below represents two reproductive cells A and B. Study the same and then answer the questions that follow : (a) Identify the reproductive cells A and B. (b) Name the specific part of the reproductive system where the above cells are produced. (c) Where in the female reproductive system do these cells unite ? (d) Name the main hormones secreted by the (1) ovary (2) testes. (e) Name an accessory gland found in the male reproductive system and state the function of its secretion.

Overview Nearly 1 in 7 couples is infertile, which means they haven't been able to conceive a child even though they've had frequent, unprotected sexual intercourse for a year or longer. In up to half of these couples, male infertility plays at least a partial role. Male infertility can be caused by low sperm production, abnormal sperm function or blockages that prevent the delivery of sperm. Illnesses, injuries, chronic health problems, lifestyle choices and other factors may contribute to male infertility. Symptoms The main sign of male infertility is the inability to conceive a child. There may be no other obvious signs or symptoms. In some cases, however, an underlying problem such as an inherited disorder, hormonal imbalance, dilated veins around the testicle or a condition that blocks the passage of sperm causes signs and symptoms. Signs and symptoms you may notice include: • Problems with sexual function — for example, difficulty with ejaculation or small volumes of fluid ejaculated, reduced sexual desire, or difficulty maintaining an erection (erectile dysfunction) • Pain, swelling or a lump in the testicle area • Recurrent respiratory infections • Inability to smell • Abnormal breast growth (gynecomastia) • Decreased facial or body hair or other signs of a chromosomal or hormonal abnormality • A lower than normal sperm count (fewer than 15 million sperm per milliliter of semen or a total sperm count of less than 39 million per ejaculate) When to see a doctor See a...

Androgens like testosterone are sex hormones. Androgens help people enter puberty and mature physically. Females with high androgen levels may develop acne, facial hair and other issues. Males with too little androgen may have low sex drives and develop breasts (gynecomastia). Adrenal gland tumors and other conditions can affect androgen levels. What are androgens? Androgens are a group of sex hormones. They help start puberty and play a role in reproductive health and body development. All genders make androgens, but males make more of them. The testicles in the What are the types of androgens? Testosterone is the predominant androgen in all genders. Other androgens include: • Androstenedione. • Dehydroepiandrosterone (DHEA). • DHEA sulfate (DHEA-S). • What is the role of androgens? In all genders, androgens help with: • Bone density. • Muscle development. • Puberty. • Red blood cell production. • Sexual desire and function. What is the role of androgens in men? In people assigned male at birth (AMAB), androgens contribute to: • Deep voice (vocal cord lengthening). • Hair growth on the face, scalp, chest, underarms and genitals. • Sperm development. What is the role of androgens in women? In people assigned female at birth (AFAB), other body chemicals convert androgen into estradiol, a form of estrogen. This hormone: • Regulates • Aids • Minimizes bone loss ( • Stimulates pubic and underarm hair growth. How do healthcare providers measure androgen levels? Your healthcare ...