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Explain
Pressure receptors
Describe the order the impulse travels in the heart
Step by step
Solved in 3 steps
- Discuss the baroreceptor reflex and explain its influence on blood pressure and heart rate.Explain why heart attack victims will often exhibit pain in the left shoulder and arm. How is it possible that heart “pain” could be felt in another location?Describe the Flank-Starling law in the heart. Describe how the heart alters stroke volume under sympathetic stimulation.
- Anatomy and Physiology Describe two effects on the heart of sympathetic nervous system stimulation.The role of the bundle of his, bundle branches, and purkinje fibers is to Help conduct the electrical pulse (action potential) to the top of the heart first before allowing the contraction to spread to the atria. Help conduct the electrical pulse (action potential) to the whole ventricle. Help conduct the electrical pulse (action potential) to the bottom of the heart first to allow it to spread from the bottom to the top of the heart. To allow the electrical pulse (action potential) to pause for 0.1s before spreading to the ventricle.When you exercise, your heart speeds up, and a greater volume of blood is pumped around the body to meet demands. Both heart rate and stroke volume are affected by changes in blood gases, blood pressure, temperature and movement. Make reference to the following to help structure your answer: Inputs: Chemoreceptors Stretch receptors Thermoreceptors Pressure receptors How the information is processed by the brain Effectors – what nerves regulate heart rate in response to changes in each direction. Explain this concept in no more than 300 words. You must make reference to the nervous system in the control of these events.
- Cardiovascular system: Draw, label and describe the events that occur during an action potential recorded in the SAN.Describe the nerve supply of the heart and explain the concept of referred pain i.e. in the left shoulder. Help me out with this. Thank you!Parasympathetic stimulation decreases the heart rate by Decreasing permeability of SA node cells to Ca2+ increasing ion influx, thus increasing the rate of depolarization. Increasing the permeability of SA node cells to Ca2+. Increasing the permeability of SA (sinoatrial) node cells to K+.