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.
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.
The male persistently ejaculates with minimal sexual stimulation and too rapidly to permit his partner or himself to enjoy sexual relations fully (University of phoenix, 2009). Health can play a role in sexual dysfunctions. Lack of desire, can be due to diabetes or deficient levels of the male sex hormone testosterone, the hormone that plays a key role in activating sexual drive in both men and women (University of phoenix, 2009). Depressants such as alcohol, narcotics, and tranquilizers can also impair sexual response and lack of sexual drive or interest is often connected with mental health problems, especially depression (University of phoenix, 2009). There are many more causes of sexual dysfunctions that consist of cultural differences, religious beliefs, and the most common, health problems or the medications taken from these problems.
Angiotension II causes vasoconstriction, which raises the blood pressure. Angiotension II also stimulates aldosterone release from the adrenal gland. This leads to increased sodium reabsorption by the kidneys, which causes water to follow it, which then increases intravascular volume. The increased vasoconstriction and increased blood volume raise the blood pressure. Additionally, the perceived hypovolumic status causes the release of antidiuretic hormone (ADH) from the posterior pituitary.
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.
Unit 2 Acute response to exercise is short term effects that exercise has on the body. Musculoskeletal response An acute response of the musculoskeletal system during exercise includes an increase in blood supply. The short term effects on your muscles increases the temperature therefore there is more activation energy so chemical reactions are used by the musculoskeletal system and the metabolic activity increases. As the oxygen demand increases, more oxygenated blood needs to be supplied to the muscles so vasodilatation occurs so more blood can pass through the arteries. This affected me during the bleep test because vasodilation allows more oxygenated blood to travel to the actively respiring muscle tissues.
Based on changes in amplitude and frequency of sEMG, did motor unit activation increase, decrease, or stay the same with increasing muscle load? The motor unit activation increased with muscle load based on the changes in amplitude and frequency of sEMG because the motor units which are activated are contracting at a greater frequency. 8. Do you think that the force of isometric contraction increased, decreased, or stayed the same as muscle load increased? The force of the isometric contraction increased as the muscle load increased.
Has the current use of fertility enhancing drugs increased the rate of twinning? Explain. A24. Yes, but only for DZs. As the drugs cause more eggs to be ovulated, the incidence of two egg ovulations goes up, hence DZ twinning goes up.
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.
Too fast. Suspiciously fast… Corticosteroid drugs, called "steroids" for short, are chemicals that when used, reduce swelling and inflammation quickly. Anabolic steroids -- or more precisely, anabolic-androgenic steroids -- are the artificial byproducts of the naturally occurring male anabolic hormone testosterone. Both anabolic and androgenic have origins from the Greek language: anabolic, meaning "to build," and androgenic, meaning "masculinizing. When a male goes through puberty, testosterone is used by the body muscle faster, deepen the voice, and grow hair where it used to be bare.