Group 6 Flashcards
Stimulus response model in maintaining homeostasis
A stimulus is a change in the environment (either external or internal) that is detected by a receptor. Receptors transform environmental stimuli into electrical nerve impulses.
Feedback loops- negative feedback.
Negative feedback loops are used to maintain homeostasis and achieve the set point within a system. Negative feedback loops are characterized by their ability to either increase or decrease a stimulus, inhibiting the ability of the stimulus to continue as it did prior to sensing of the receptor.
Thermoregulation & Osmoregulation.
Thermoregulation is the ability of an organism to keep its body temperature within certain boundaries.
Osmoregulation is the process by which the water content and the ion concentration is regulated and kept constant in an organisms cells. It results in maintaining the osmotic pressure in the blood and tissue fluids.
Structure and function of the kidney in maintaining homeostasis.
The kidneys maintain homeostasis by controlling the amount of water, ions, and other substances in the blood. Kidneys also secrete hormones that have other homeostatic functions. The kidneys are two bean-shaped organs in the renal system. They also help filter blood before sending it back to the heart.
Blood glucose regulation
Regulation of blood glucose is largely done through the endocrine hormones of the pancreas, a beautiful balance of hormones achieved through a negative feedback loop.
homeostasis
The ability to maintain a relatively stable internal environment in the face of changing external conditions
how blood glucose regulation malfunction can lead to disease/disorder.
When the glucose enters your cells, the amount of glucose in your bloodstream falls. If you have type 1 diabetes, your pancreas doesn’t secrete insulin — which causes a buildup of glucose in your bloodstream. Without insulin, the glucose can’t get into your cells.
