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The human and the way it maintains an internal stable environment, the way it adapts based on external factors such as temperature, and how the body factors in internal stimuli is a phenomena, but not a mystery. It is able to maintain a stable environment, or scientifically, it maintains homeostasis. It does this through the coordination of the endocrine system, and the nervous system (central nervous system, CNS, and peripheral nervous system, PNS). Homeostasis is usually achieved when a receptor senses stimulus, a component that responds to changes in the environment. As the receptor senses stimulus it sends it to a controls centre, a component that determines the appropriate response, the control centre is usually the brain.
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The hormonal mechanisms that influence the male reproductive functions involve the endocrine tissues, the hypothalamus, anterior pituitary and the reproductive organ that is also considered and endocrine tissue, the testis. In the hypothalamus specific neurosecretory glands secrete GnRH, or gonadotropin releasing hormone. GnRH is carried by the blood to the anterior pituitary gland where it binds to receptors on gonadotrophic cells. The GnRH stimulates the gonadotrophic cells to increase the secretion of two gonadotrophic hormones, Luteinizing hormone (LH), Follicle - stimulating hormone (FSH). These to hormones are transported in the blood from the anterior pituitary gland to the testis. In the testes LH bind to leydig cells which in turn stimulates the secretion of testosterone. With the assistance of FSH and testosterone, stertoli cells are able to produce ABP, Androgen-bind protein maintains high levels of testosterone. ABP binds to testosterone and maintains high levels of that hormone near spermatogenic cells. This with FSH help in the maturation of spermatozoa. In addition to all this, testosterone is converted into DHT, dihydrotestosterone, this hormone may also contribute to the formation of sperm cells. The two androgens testosterone and DHT, help to develop males sexual characteristics and The process described above can be seen in figure
There is a variety of homeostatic procedures that the internal environment maintains within an acceptable limit. Without the control of the homeostatic system the body suffers various issues. These issues like cellular failure can
FSH and LH start development of the follicle. After around 12 days the level of estrogen peaks. The high estrogen level has a positive feedback loop, which fuels the release of FSH and LH. The increase in LH causes the follicle to rupture, and the follicle cells that remain grow into the corpus luteum. When the follicle is mature, progesterone levels rise to stimulate the growth of the uterine lining in preparation for a fertilised egg. Progesterone has a negative feedback loop with the hypothalamus that inhibits GnRH, as well as FSH and LH. If there is no fertilisation, the levels of progesterone drop. This causes corpus luteum starts to shrink, endometrium breakdown, and menstruation begins. (The Ovarian And Menstrual Cycle 2013) (Hormones of the Reproductive System
Carol Proth explains the development of the high androgens levels by the “increased release of LH [leutenizing hormone] in relation to FSH [follicle stimulating hormone] release, with a resu...
Homeostasis is how the body keeps situations inside it the same. Scientists describe it as the keeps a continuous internal environment. Two examples of things that the body keeps the same are:
A man has been married to his wife for seven years. The couple has two beautiful children, a fabulous home, and appear to have the perfect marriage. After the husband leaves work one afternoon, he decides to stop in at the local bar. The man sits at a table in the corner of the room. Not long after his arrival, a woman approaches him. She asks the man if she can join him at his table. The two seem to have quite a bit in common and enjoy each other’s company. The woman asks if he would like to go back to her apartment. He has not had a fight with his wife today. In fact, she surprised him with a love note in his briefcase. Their sex life is enjoyable, frequent, and without complaint. The couple is not currently having financial problems. Despite this, why did the man decide to leave with a stranger and cheat on his wife? A great deal of research has been carried out on the topic of infidelity. Marital therapists have reported that more than half of the couples they counsel are in therapy as a result of infidelity (Atkins, Jacobson citation). Therapists also consider an extramarital affair as, “one of the most damaging relationship events and one of the most difficult problems to treat in couples therapy” (whisman predicting sexual infidelity…). Some therapists estimate that 50% to 65% of couples seek help after an incident of infidelity in their relationship (Atkins, Jacobson & Baucom). Identifying the reasons for this problem are essential to the success of its reduction. Infidelity is not a new phenomenon. However, there was little research on the topic until the late 1970’s (Drigotas & Barta, 2001). Numerous factors have been examined while trying to determine the root cause for extramarital relationships a...
Our body need a type of mechanism that is needed to maintain its internal environment. This is usually controlled by the process of homeostasis. Homeostasis is the maintenance of a constant internal environment (that means keeping the condition inside your body the same).
The word homeostasis means “steady state”. Human cells are demanding so that is why homeostasis is very important and necessary. The conditions inside the body of a human are kept at a narrow range and not constant. Core temperature changes slightly all through a normal day without producing harmful effects. Homeostasis is the maintenance of a regular interior environment in reply to a change in the outer surroundings. When you step outside your internal body temperature falls and you have no other way of warming yourself, the body will start to shiver to produce inner heat through a chemical reaction. Shivering is one way the muscles will do to generate heat to warm up the body and raise the body temperature. The first homeostatic response is to reduce heat loss. The body reacts by reducing the amount of warm blood from flowing through the skin by narrowing the blood vessels in the skin. If the human body cannot find a way to stay warm such as putting on a jacket or standing in front of a heater, then the body must produce heat to stay warm. To produce this heat the body wil...
“Homeostasis” was first described by Claude Bernard, a French physiologist in 1865. It can be defined as the ability of an organism or cell to maintain its internal environment by the system of feedback controls. Homeostasis preserves a stable internal environment as surroundings change inside and outside the cell and is a significant characteristic of living being. It also plays a key role in the survival and proper functioning of the human body. The maintenance of systems within a cell is called ‘homeostatic regulation’. Homeostasis is controlled by three different mechanisms: Osmoregulation, Thermoregulation and chemical regulation. These different mechanisms are carried out by different systems of the body such as endocrine system, nervous system, exocrine system, respiratory system, reproductive system.
Homeostasis is used by every organism to be able to survive in a certain environment. This happens because the organism needs to adapt to the certain conditions that the environment is exposing, but if the organism fails to adapt it may can lead to death. The system sends alerts through the nervous, electrical circuits, and hormonal system.
Our bodies need to control things like body temperature and water level to keep them from changing. That’s the process of homeostasis.
The male reproductive system is a set of organs that works together to produce sperm which will later in life fertilize females eggs. The testes are the most important part of the system because it produces sperm cells. It is similar and looks similar to ovaries of a female’s reproductive system because it also holds what they need to reproduce. Its job is to produce the sperm cells needed to reproduce. Due to hormonal imbalances the production of sperm cells may not even be possible in some males. Testosterone is the male the hormone that gives men there manly characteristics. It is made up of hydrogen, carbon, and oxygen with a white color. In the male body it helps develop sex organs, a deeper voice, and facial hair (Khalid, 2013). Cancer or a genetic disorder in males is the most common thing that cause the reductions of testosterone production in the body. Behind the testes is the epididymis which lets sperm go through the vas deferens from the testes (Dictionary, 2014). It looks like leach the way it is position right on the testes but it is thinner. When sperm is produces the ...
The reproductive systems are based off of the goal to create offspring. Both the male and the female reproductive systems, although fueled by a similar goal, have different components and structures. Both systems are very complex in their own way, making it important for one to understand how each of the systems and their various processes work. Knowing the processes and components of the male and female reproductive systems will aid all people in their life, sometime or another. It’s important to understand how our individual bodies work and how life is produced.
...culatory system. Pituitary gland is a growth hormone that helps in mertabolism and develops reproductive organs. The thyroid controls metabolsim on the rate that the body breaks down food. Adrenal gland secretes many hormones including adrenaline which prepares the body to react in a stressful situation. The pancreas produces digestive enzymes and insulin. Ovaries produce ova and estrogen. Testes produce sperm cells and testosterone. To stay healthy you should get a regular medical check-up, eat a well-balanced diet, sleep at least 8 hours, and decrease stress in your life. Some problems are growth disorders, diabetes, and obesity. Puberty begins at different times for girls then boys. Girls start around ages 9-13 and boys are ages 10-15.
The male reproductive organ system is made up of the penis, urethra, prostate, bladder, scrotum, and testes. The testes are the egg shaped organ in the male’s scrotum. The male reproductive system purpose is to do three things, produce, maintain, and transport sperm, discharge sperm into the female reproductive system, and produce and secrete sex hormones to maintain the
Thermoregulation is a homeostatic mechanism employed by most warm blooded mammals in order to maintain a consistent internal temperature for optimal cellular activity. As humans we use internal thermoregulation (an aspect of homeostatis) to maintain a normal temperature of thirty seven degrees celcius.In humans our body heat is produced in the deeper organs such as liver, brain and heart. A human 's thermoregulation system is able to make adaptions depending on the climate changes. These adaptions include both physiological mechanisms and behavioural mechanisms. Physiological mechanisms occur as a result of evolution and behavioural mechanisms occur as a result of conscious cultural adaptions. The skin also assists in homeostatis by reacting