Using no more than 11 propositions create a Concept Map to e

Using no more than 11 propositions, create a Concept Map to explain how positive and negative feedback systems are related to body homeostasis.

How do I create a concept map? How am I graded? Switch to keyboard version control center effector homeostasis negative feedback original set point or range positive feedback sensory receptor stimulus is a mechanism that, when used appropriately, returns the body to is received by the producing a response that amplifies its effects is producing a response that reduces its effects is responds in a way that influences the original sends a signal along the afferent pathway to the sends a signal along the efferent pathway to the specifically moves the variable away (at least temporarily) from specifically moves the variable toward

Solution

( Negative feedback system )

Afferent pathway                                                 Efferent pathway

  

                             Control centre

     

          Receptor                                     Effector

   

               

         Stress                                    Homeostasis restored

                          

                           Homeostasis disrupted

                                 ( stress )

It is used for maintenance of homeostasis. The negative feedback loops act to oppose the stimulus. For instance: if your body temperature is very high then negative feedback will act to bring it back down towards the set point. We can said that it is a temperature- regulatory control centre.

Positive feedback loops amplify the starting signal. It plays very important role during childbirth. During childbirth, baby’s head presses on the cervix and the bottom of the uterus, then through which the baby must emerge and after that it activates the neurons to the brain. The neurons send the signals then it releases the hormone oxytocin. Oxytocin increases the uterine contractions and then pressure on the cervix. Due to this, the loop continues until the baby is born.

Nerve impulses from cervix                          Brain stimulates pituitary gland

Transmitted to brain                                 to secrete oxytocin

                         

                                 

                                 

Head of baby pushes against                         Oxytocin carried in blood stream

Cervix                                            to uterus

                            Oxytocin stimulates uterine

                            Contractions and pushes baby

                             Towards cervix