Anatomy And Physiology Research Paper

BTEC BIOLOGY ASSIGNMENT 3
TASK 1
HOMEOSTASIS
Homeostasis can be defined as a point of balance or internal equilibrium that all kind of system both living and non-living can work to keep themselves in this state of balance.
Mechanisms of homeostasis in human body
Temperature Regulation: If your body too hot or cold, there are several ways in which your temperature can be controlled. They involve sweating, shivering, capillaries and hairs. As we learn in the class when your body becomes;
Too hot
When we get too hot: (1) The sweat gland in the skin release more sweat. This evaporates, removing heat energy from the skin. (2) The blood vessels leading to the skin capillaries becomes wider , they expand allowing more blood to flow
These glands release the hormones into the blood stream and are transported to the various cells and body parts. When the hormones reach the target site, they bind to the receptor cells with a lock and key mechanism. The hormone may be present within the nucleus or on the surface of the cells. Once bound to the receptor, the hormones transmit a signal that triggers an action by the site. Hormones control the organ's function and affect the growth and development of the organs. It is due to the hormones that the sexual characteristics of the organs develop and act accordingly. They also determine the use and storage of energy in the body regulate the fluid, salt and sugar levels in the blood. Minute amount of hormones trigger large reactions within the body. All hormones are proteins, but all proteins are not hormones. Steroids are not derived from proteins, but from the fatty substances from fatty
The two best described are defecation and childbirth. It is defined as a mechanism whose output stimulates an increase in output i.e. birth. Also, "A system's response to external stimuli leading to further changes that serve to reinforce the initial response, thereby creating and accelerating a cause and effect loop." This mechanism is potentially dangerous because it will cause the body to respond as strong as it can until there is a release of stimulation birth or uterine rupture. A negative feedback mechanism is one where the output causes a decrease in subsequent output a balancing loop. There are lots of negative feedback loops in the body as this is the way that most systems maintain homeostasis the ability or tendency of an organism or cell to maintain internal equilibrium by adjusting its physiological processes. A negative loop could be hormone secretion. Hormone levels decrease so the body stimulates the organ to produce more. At a certain level, the body recognizes that there is too much and pulls back production the negative