https://padlet.com/gsmith14/bboxdlx7iggp Explain the diagram in activity 1 in your own words. Then, comment on another person's post to offer suggestions of improvements to one post. en-us 2018-01-22 13:11:50 UTC 2021-01-26 19:20:57 UTC hello@padlet.com gsmith14 https://padlet.com/gsmith14/bboxdlx7iggp/wish/223302715 Part 1: For the title of a post, use your name. In the description, add you explanation.  

Part 2: To offer suggestions of improvement, create another post. In the title, type "(Your Name) for (Their Name)". For example, if I am offering suggestions to Victor, I would write "Greg for Victor" and then write my suggestions.]]> 2018-01-22 13:13:45 UTC https://padlet.com/gsmith14/bboxdlx7iggp/wish/223302715 https://padlet.com/gsmith14/bboxdlx7iggp/wish/225080615 In the first activity we are able to identify the various organs and systems involved in the increment or decrement of heart rate. This processes occur mainly due to brain activity where we can find the medulla and reflex centers that produce nervous activity led by nervous fibers. This fibers are directly connected to the heart and stimulates the pacemaker whether it is for inhibition or acceleration of the myocardial contractions. There’s also the adrenal glands in the livers that release epinephrine and causes the heart rate to increase when released into the blood. ]]> 2018-01-26 15:06:19 UTC https://padlet.com/gsmith14/bboxdlx7iggp/wish/225080615 https://padlet.com/gsmith14/bboxdlx7iggp/wish/225704096 The pacemaker controls and coordinates the heart rate. This is affected by both the brain and the adrenal gland. The brain contains the medulla oblongatta, which has reflex centers and a cardiac inhibitory center. These send signals to the pacemaker through nerve fibres to reduce heart rate. Stress in the body and brain cause the adrenal gland to produce epinephrine. Epinephrine travels to the pacemaker, which causes heart rate to increase. 

]]> 2018-01-29 16:13:55 UTC https://padlet.com/gsmith14/bboxdlx7iggp/wish/225704096 https://padlet.com/gsmith14/bboxdlx7iggp/wish/225707702 You should include that epinephrine is produced by the adrenal gland due to stress signaled to the brain]]> 2018-01-29 16:20:02 UTC https://padlet.com/gsmith14/bboxdlx7iggp/wish/225707702 https://padlet.com/gsmith14/bboxdlx7iggp/wish/225904807 The heart's natural pacemaker are a group of neurons that send electrical shocks to the heart to make it contract, beat, in coordination. This means the pacemaker makes the pace for the hearts heartbeat. But the rhythm of the pace is determined by 2 other parts of the body. The first is the brain, in the medulla oblongata we can find the reflex centers that send signals to the heart to accelerate heart beat and strength of contractions at will. The second is the adrenal gland located in the kidneys. These glands release epinephrine, or else known as adrenaline to the blood and that blood eventually will reach the heart. The adrenaline hormone in the blood activates phisiological changes in the body that simulate arousal, fight or flight response. One of the symptoms of this hormone in the blood apart from heavy breathing, dry mouth, perspiration, is an increase in hear rate, affecting the pacemakers pace.]]> 2018-01-30 00:49:06 UTC https://padlet.com/gsmith14/bboxdlx7iggp/wish/225904807 https://padlet.com/gsmith14/bboxdlx7iggp/wish/225911609 Great explanation but just as an extra, you could say that environmental, cognitive, and biological factors can cause the stress that causes the release of epinephrine. And as a fun fact, you could say that stress is not the only way our body can release epinephrine, also love, trust, and happiness. Scientifically proven that love attraction and stress make our bodies behave the same way :D]]> 2018-01-30 01:35:36 UTC https://padlet.com/gsmith14/bboxdlx7iggp/wish/225911609 https://padlet.com/gsmith14/bboxdlx7iggp/wish/225921496 The pacemaker in the heart controls mostly the heart rate that is guided through the function of two main regions in the brain the adrenal glands located in the top of each kidney and the medulla oblongata located in the brain stem. The medulla oblongata shows the reflex centers that result in nervous activity due to the nervous fibers those fibers are connected directly to the heart
 and result in the strength of heart contractions and the acceleration of heart beat. These create signals and send them to te peace maker. The stress hormone commonly known as  (adrenaline) comes from the adrenal glands divided into two main and different structures the adrenal cortex (outer structure) and the adrenal medulla (inner structure) that result in the production of epinephrine which eventually travels through the peacemaker and  cause heart rate to increase. ]]> 2018-01-30 02:47:18 UTC https://padlet.com/gsmith14/bboxdlx7iggp/wish/225921496 https://padlet.com/gsmith14/bboxdlx7iggp/wish/225923172 Your explanation is great and with a lot of detail not only into cause but also effect. Maybe focus a bit more to explain the effects of these events either increase or decrease of heart rate. ]]> 2018-01-30 02:58:58 UTC https://padlet.com/gsmith14/bboxdlx7iggp/wish/225923172 luismarcelodiaz1 https://padlet.com/gsmith14/bboxdlx7iggp/wish/226388948 In the diagram we can see all the parts of our system that are involved in the increasing and decreasing of heart rate.The peacemaker is an area of the heart muscle that it's on the right atrium, this is what controls the heart rate. This is controlled by the brain and the adrenal glands. The Medulla oblongata, located near the upper spinal cord, which is part of the brain stem contains reflex centers. The medulla oblongata is connected to the heart through nerve fibres , in the Cardiac inhibitory center, this is what affects the  peacemaker and causing the  decreasing in the heart rate. In the  Cardiac accelerating center the nerve fibres stimulate the peacemaker and causing the heart rate to increase. The adrenal Glands produce epinephrine, which is pretty much adrenaline, that is transported in the blood to the peacemaker, this causes the heart rate to increase.

]]> 2018-01-31 01:18:23 UTC https://padlet.com/gsmith14/bboxdlx7iggp/wish/226388948 https://padlet.com/gsmith14/bboxdlx7iggp/wish/226389307 The process of identifying the increment or decrement of heart rate includes many organs. This process starts of by brain activity in the medula and reflex centers that produce nervous activity which starts of by the nervous fibers. The fibers stimulate the heart and stimulates the pacemaker, if its either for inhibition or acceleration in the myocardial contractions. Another reason why heart rate can increase is because of the amount of epinephrine in the blood. Epinephrin is released through the adrenaline glands in the livers and epinephrine is produced by the adrenaline gland due to stress signaled of the brain

]]> 2018-01-31 01:20:28 UTC https://padlet.com/gsmith14/bboxdlx7iggp/wish/226389307 luismarcelodiaz1 https://padlet.com/gsmith14/bboxdlx7iggp/wish/226391283 In the part where you are talking about the medulla oblongata and how the reflex centers send signals to the heart, you should add that in the Cardioinhibitory center the medulla oblongata can also affect the peacemaker and decreasing the heart rate.

]]> 2018-01-31 01:33:57 UTC https://padlet.com/gsmith14/bboxdlx7iggp/wish/226391283 https://padlet.com/gsmith14/bboxdlx7iggp/wish/226396205 Many organs affect the heart rate, either by increasing or decreasing it. The pacemaker is found at the right atrium, and its function is coordination and contractions. It is influenced by the cardiac inhibitory center, which is found in the medulla oblongata of the brain stem, since it is connected to the heart by nerve fibers. This leads to the decrease in heart rate. On the other hand, in order for there to be an increment in the heart rate, the cardiac accelerating center found at the medulla oblongata, which is connected to nerve fibers, stimulates the pacemakers causing the rate to augment. In addition, the adrenal glands release epinephrine that is transported in the blood to the pacemaker of the heart, and this increases the heart rate too. 

]]> 2018-01-31 02:10:11 UTC https://padlet.com/gsmith14/bboxdlx7iggp/wish/226396205 https://padlet.com/gsmith14/bboxdlx7iggp/wish/226396882 You should make to include the role of the cardiac centers that are found at the medulla and which are connected to the heart by nerve fibers. Additionally, talk about the process by which the heart rate decreases. ]]> 2018-01-31 02:14:26 UTC https://padlet.com/gsmith14/bboxdlx7iggp/wish/226396882 https://padlet.com/gsmith14/bboxdlx7iggp/wish/329890960 The pacemaker (SA node) is what sets the rate of the heartbeat by coordinating and contracting. The pacemaker is influenced by the medulla oblongata which is connected to the heart by nerve fibers. This increases heart rate and increases the strength of the contractions made by the pacemaker. The cardiac accelerating center, which is located in the medulla and connected to the heart by never fibers also impacts the pacemaker by stimulating it and therefore increasing the heart rate and the strength of the contractions. Additionally, the adrenal glands release epinephrine (adrenaline) which is transported in the blood to the pacemaker, which ultimately increases heart rate. ]]> 2019-02-11 15:01:19 UTC https://padlet.com/gsmith14/bboxdlx7iggp/wish/329890960 https://padlet.com/gsmith14/bboxdlx7iggp/wish/329893462 The SA node sends out electrical impulses from atrium in order for it to contract and pump blood into the ventricle. The electrical impulses are conducted to the ventricles through the AV node. The SA node is influenced by the brain stem, specifically by the medulla oblongata, which is connected to the heart by nerve fibers. The increase of heart rate is caused by this. The brain stem (medulla) is connected to the heart by nerve fibers influences the SA node by increasing the heart rate. Adrenaline glands are the one responsible for the secretion of adrenaline, which is then transported in the blood to the SA node causing the heart rate to increase. ]]> 2019-02-11 15:05:08 UTC https://padlet.com/gsmith14/bboxdlx7iggp/wish/329893462 https://padlet.com/gsmith14/bboxdlx7iggp/wish/329894011 The SA node is is influenced by the brain stem (medulla oblongata) . This is connected to the heart by the nerve fibers, affecting the pacemaker and causing heart rate to decrease. The pacemaker makes the presses for our heartbeat. However, the rhythms of these paces are influenced by the SA node, which sends signals to accelerate heart rate and the adrenal glands, near the kidneys, these glands release adrenaline, which is a hormone related with our emotions. When this is released into the blood, it causes heart rate to increase]]> 2019-02-11 15:05:57 UTC https://padlet.com/gsmith14/bboxdlx7iggp/wish/329894011 https://padlet.com/gsmith14/bboxdlx7iggp/wish/329895582 The reflex centers located in the brain control heart and respiratory rate. The medulla oblongata send through the nerve fibers the electrical impulse which goes to the SAN. The SAN is under control or influenced by the medulla oblongata. ]]> 2019-02-11 15:08:30 UTC https://padlet.com/gsmith14/bboxdlx7iggp/wish/329895582 https://padlet.com/gsmith14/bboxdlx7iggp/wish/329895609 The SA Node sends out electrical shocks from the right Atrium in order to move blood into the ventricle. The shocks are translated into the ventricle through the AV node and will move into the SA Node. The electrical impulses will move into the apex through the Bundle of His (a group of nerves) which allows for the electrical impulses to move along the ventricle via the Parkinje Fibers (which allows the ventricles to contract). ]]> 2019-02-11 15:08:32 UTC https://padlet.com/gsmith14/bboxdlx7iggp/wish/329895609 https://padlet.com/gsmith14/bboxdlx7iggp/wish/329895935 The process of the heart rate in the diagram is set by the pacemaker (SA node). This it what contracts and coordinating the heart by having an effect on the medulla which also is connected to the nerve fibres. This nerves are noradrenaline ( it increases heart rate) and Acetylcholine ( it decreases heart rate). The pacemaker helps accelerate the contractions making it increase the heart rate. ]]> 2019-02-11 15:09:02 UTC https://padlet.com/gsmith14/bboxdlx7iggp/wish/329895935 https://padlet.com/gsmith14/bboxdlx7iggp/wish/329896460 The nerve fiber layer consists of the axons of the ganglion neurons coursing on the virtual surface of the retina to the optic disk. The axons are unmyelinated until they penetrate the sclera at the optic disk. The nerve fiber layer are the most thick in the vicinity of the optic disk.]]> 2019-02-11 15:09:49 UTC https://padlet.com/gsmith14/bboxdlx7iggp/wish/329896460 https://padlet.com/gsmith14/bboxdlx7iggp/wish/329896588 In this diagram, we are able to see the process of our heart rate. 

- The SA node is influenced by the brain stem this part is found in the right atrium of the heart and is also known as the pacemaker and is what controls our heart rate. 

- The medulla Oblongata is part of the brain stem and it contains reflex centers and is also what controls the pacemaker. This ]]> 2019-02-11 15:10:04 UTC https://padlet.com/gsmith14/bboxdlx7iggp/wish/329896588 https://padlet.com/gsmith14/bboxdlx7iggp/wish/330023165 Really awesome explanation! It was really clear and easy to understand. Maybe if you could add how the heart rate decreases to see both views. Overall, it was really well done!]]> 2019-02-11 18:28:14 UTC https://padlet.com/gsmith14/bboxdlx7iggp/wish/330023165 https://padlet.com/gsmith14/bboxdlx7iggp/wish/330034287 You have a great explanation with very important information. But make sure to explain certain terms such as "SAN".]]> 2019-02-11 18:48:04 UTC https://padlet.com/gsmith14/bboxdlx7iggp/wish/330034287 https://padlet.com/gsmith14/bboxdlx7iggp/wish/330158149 Really good explanation!! You included the most important information about the process of heart rate. What would make you explanation even better is to include what causes the heart rate to either speed up or slow down, maybe by explaining what hormones or neurotransmitters affect the heart rate. But overall great explanation!]]> 2019-02-12 01:30:52 UTC https://padlet.com/gsmith14/bboxdlx7iggp/wish/330158149 https://padlet.com/gsmith14/bboxdlx7iggp/wish/331458458 In the SA node, impulses are send out throughout the atrium so it can contract. This allows it to pump blood into the ventricle. The SA node is influenced by the brain stem that is related to the heart. It is connected through nerve fibers that increase the heart rate. Moreover, adrenaline glands secrete the adrenaline that is transported in the blood to the SA node. 
All of this process helps the heart rate to increase. ]]> 2019-02-14 18:37:10 UTC https://padlet.com/gsmith14/bboxdlx7iggp/wish/331458458 https://padlet.com/gsmith14/bboxdlx7iggp/wish/331464762 I like your explanation because it is really easy to understand. The vocabulary you use is understandable and it helps the reader comprehend the process of the increasing heart rate. I like the transitions that you use to explain the differences between the process of the SA node and the adrenal glands. ]]> 2019-02-14 18:48:26 UTC https://padlet.com/gsmith14/bboxdlx7iggp/wish/331464762 https://padlet.com/gsmith14/bboxdlx7iggp/wish/335871269 In the diagram we labelled we were able to see the process of our heart rate.  It is set by the peacemaker (heart), this contracts and controls our heart rate which is influenced by the medulla oblongata which is part of the brain stem and controls the peace maker. this increases heart rate and the strengths of the contractions made. The accelerating center impact the peacemaker by stimulating it and then increasing strength of contractions and the heart rate. Then the adrenal glands release epinephrine which also increases heart rate. ]]> 2019-02-27 13:43:50 UTC https://padlet.com/gsmith14/bboxdlx7iggp/wish/335871269 https://padlet.com/gsmith14/bboxdlx7iggp/wish/335885541 I really liked your explanation it was very easy and very detailed which allowed me to understand quickly and better the process of how nerves influences our heart rate! You did a great job! ]]> 2019-02-27 14:10:34 UTC https://padlet.com/gsmith14/bboxdlx7iggp/wish/335885541 https://padlet.com/gsmith14/bboxdlx7iggp/wish/336038195 In the first diagram, we see a detailed explanation of how blood travels and what are the key components used to acheive this. This process starts with the pacemaker, which contracts and controls our heart rate. This area is controlled by part of our brain stem which also controls the pacemaker. Heart rate and the strenghts of contractions increases.  In the end, the adrenal glands release eninephrine which in turn increases heart rat

 ]]> 2019-02-27 17:45:25 UTC https://padlet.com/gsmith14/bboxdlx7iggp/wish/336038195 https://padlet.com/gsmith14/bboxdlx7iggp/wish/336183981 In the diagram we can see the process of the heart rate and how it is connected with the nerve system. Starting with the pacemaker, this one is in charge of coordinating contractions which is influenced by the medulla oblongata. This is connected to the heart by nerve fibers which in the diagram we can see increases the heart rate. Then, since the medulla is connected to the heart by nerve fibers this influences the pacemaker by increasing the heart rate. When looking at the adrenal glands, these release epinephrine which then increases the heart rate as well.]]> 2019-02-27 22:34:23 UTC https://padlet.com/gsmith14/bboxdlx7iggp/wish/336183981 https://padlet.com/gsmith14/bboxdlx7iggp/wish/336189316 It is a very concise explanation! Maybe the wording could be fixed and with a little more detail so that someone else can understand clearer how heart rate increases. It could be a good idea to as well mention how heart rate may increase]]> 2019-02-27 22:58:22 UTC https://padlet.com/gsmith14/bboxdlx7iggp/wish/336189316 https://padlet.com/gsmith14/bboxdlx7iggp/wish/1113032464 In the diagram we can see how heart rate is moderated throughout the body. The pacemaker is in charge of controlling heart beats through the medulla oblongata. These are connected to nerves which can be seen in the image. As the pacemaker is connected to the heart which ic connected to the medulla oblongata, the pacemaker is influenced by the medulla oblongata. The glands which are connected to the heart also control the heart rate.]]> 2021-01-22 07:28:46 UTC https://padlet.com/gsmith14/bboxdlx7iggp/wish/1113032464 https://padlet.com/gsmith14/bboxdlx7iggp/wish/1113039883 Very detailed explanation. Your explanation was crystal clear and could not have been done better. Good job!]]> 2021-01-22 07:32:38 UTC https://padlet.com/gsmith14/bboxdlx7iggp/wish/1113039883 https://padlet.com/gsmith14/bboxdlx7iggp/wish/1113043838 In the first operation, we will classify the different organs and processes involved in increasing or lowering the heart rate. These functions are primarily due to the function of the cortex, where the medulla and reflex centers that produce nervous activity guided by nervous fibers can be located. These fibers are attached directly to the heart and activate the pacemaker for inhibition or acceleration of Myocardial contractions are involved. There are also epinephrine-releasing adrenal glands in the liver that allow the heart rate to raise when released into the blood.]]> 2021-01-22 07:34:43 UTC https://padlet.com/gsmith14/bboxdlx7iggp/wish/1113043838 https://padlet.com/gsmith14/bboxdlx7iggp/wish/1113044187 The process of identifying the increment or decrement of heart rate includes many organs. This process starts of by brain activity in the medula and reflex centers that produce nervous activity which starts of by the nervous fibers. The fibers stimulate the heart and stimulates the pacemaker, if its either for inhibition or acceleration in the myocardial contractions. Another reason why heart rate can increase is because of the amount of epinephrine in the blood. Epinephrin is released through the adrenaline glands in the livers and epinephrine is produced by the adrenaline gland due to stress signaled of the brain.]]> 2021-01-22 07:34:54 UTC https://padlet.com/gsmith14/bboxdlx7iggp/wish/1113044187 https://padlet.com/gsmith14/bboxdlx7iggp/wish/1113051008 2021-01-22 07:38:11 UTC https://padlet.com/gsmith14/bboxdlx7iggp/wish/1113051008 https://padlet.com/gsmith14/bboxdlx7iggp/wish/1128587147 I really liked your explanation, it started off with this really light introduction and has really great clarification and shows understanding of what you were saying and everything you wrote is clearly connected well! ]]> 2021-01-26 19:19:28 UTC https://padlet.com/gsmith14/bboxdlx7iggp/wish/1128587147