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.
Here we look at how each phase of the sexual response cycle works. The first phase of the sexual response cycle is the Excitement phase. This phase includes thoughts, fantasies, and motivation to engage in sexual activity (Benuto, 2009). Vasocongestion during the excitement phase can cause erection in young men as soon as 3 to 8 seconds. The testicles swell, his scrotum tightens and the male begins secreting a lubricating liquid.
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).
stroke volume increases dying exercise to increase circulating blood in the body system in order for the body to respond to exercise appropriately. 5. Discuss the importance of the change in CO with exercise? cardiac output increases due to the increase in heart rate and stroke volume during exercise 6. Restate your predictions that were correct and give data from your experiment that support them.
Nurture; is it natural for men and woman to be attracted to the same sex? Or does the environment or society cause a person to seek companionship from the same sex? According to researchers they have examined the brains of both a heterosexual and a homosexual male and female and have determined that the hypothalamus (the organ in the brain that is responsible for sexual behavior) was much bigger in the homosexual subjects than in the heterosexual subjects. They believe this was a cause of an increased amount of early levels (probably prenatal) of estrogen (a natural or artificial female sex hormone responsible for the development of female sexual characteristics) in the men and androgen (a natural or artificial male sex hormone responsible for the development of male characteristics) in women. Also it is the possibility that a male receives too little androgen at birth and the female receives too little estrogen at birth causing the homosexual and the lesbian behavior.
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.
Males tend to grow facial hair and chest hair. Females develop breasts and will experience their first menstrual cycle. The brain also experiences development. The corpus callosum thickens, which allows individuals to process information better. 4.
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.
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
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