It causes erection of the penis and swelling of the area surrounding the vaginal opening. The testes, the nipples, and even the earlobes swell as blood vessels dilate these areas. Myotonia is muscle tension. It causes facial grimaces, spasms in the hands and feet, and then the spasms of orgasm. Here we look at how each phase of the sexual response cycle works.
University Of Phoenix 09 Sexual Response Cycle Sexual Response occurs in four different stages. According to Masters and Johnson, they are excitement, plateau, orgasm, and resolution. It is also characterized by vasocongestion or the engorgement of blood vessels with blood making the genitals and breast swell during the arousal state; the next is myotonia or muscle tension. This causes facial expressions, spasms in the hands and feet, and orgasms. Excitement The first phase is the excitement stage, by which an erection of the penis occurs in males and vaginal lubrication occurring in females.
Human Chorionic gonadotropin (hCG) is a hormone that women use to cause ovulation and treat infertility. Men use this hormone to increase their sperm count. Young boys can also use this hormone if their testicles have not dropped into the scrotum normally. This infertility, low sperm count, and testicles not dropping properly can be caused by a pituitary gland disorder. hCG effects the hormone LH (Luteinizing hormone) and the target tissue is the ovaries in women and testis in men.
These phases are the starting point to the sexual response cycle and even though similar in description, men and women have many different bodily reactions. Men for example have the blood rush to their genitals engorging the penis with blood, the testis swelling, and the scrotum tightening allowing the testis to rise. Yet in women during these phases the clitoris flows with blood, much like the penis, the breast swell and the vaginal lips
Boys will experience a change in genital size as well as the growth of pubic hair. Girls will experience the growth of breasts the widening of her hips and the onset of their menstrual cycle. This is the point when the boys will catch up and exceed the height of the girls. These biological changes are brought on by a flood of hormones these hormones are testosterone a hormone associated in boys with the development of genitals, an increase in height, and a change in voice. And estradiol a type of estrogen; in girls it is associated with breast, uterine, and skeletal development.
Describe and evaluate hormonal mechanisms in aggression. (8 marks + 16 marks) The male sex hormone testosterone is thought to increase levels of aggression from young adulthood onwards. It is thought that testosterone may influence areas of the brain that control behavioural reactions, such as the amygdala and the hypothalamus. Testosterone also influences the levels of other hormones which are thought to be involved in aggression, such as vasopressin. The link between testosterone and aggression may explain why males are generally more aggressive than females: males produce much higher concentrations of testosterone than females, and this may therefore lead to higher levels of aggression.
Additionally, the perceived hypovolumic status causes the release of antidiuretic hormone (ADH) from the posterior pituitary. ADH increases water reabsorption in the kidneys, which further contributes to increased volume and increased BP (McCance & Huether, 2010). 2.) What tests indicate glomerular function? Serum creatinine concentration, cystatin C plasma concentration, and BUN levels indicate glomerular function (McCance & Huether, 2010).
Examples of steroids include the dietary fat cholesterol, the sex hormones estradiol and testosterone, and the anti-inflammatory drug dexamethasone. Anabolic steroids mimic the effect of the natural androgen, testosterone. Testosterone naturally increases male characteristics which initially arise at puberty, including facial hair, body hair, muscle
Puberty occurs when biological changes start to take place in the body, the development of body parts makes the difference between boys and girls more noticeable. I remember my excitement during puberty that I had finally gotten taller like the other boys. I also noticed the development of certain things like I began to grow facial hair and more important at the time, girls began to notice me, I was no longer the skinny little boy the girls teased. I believe one of the most difficult challenges that adolescents face during puberty is sexual maturation. During puberty biological changes occur that cause reproductive maturity, which is sometimes embarrassing for adolescents.