Four Physiologic Systems

How Four Physiologic Systems Work Together

Neuromuscular System: The neuromuscular system is where the body starts when it begins to make a movement. It does this by the nervous system to the motor neurons. This signal that is sent is in the form of an electrical impulse. Once it gets to the motor neuron, it is intercepted via the dendrites. Afterwards the signal is sent to the axon hilock where is it determined by the neuron if it will be sent down the axon. It does this by utilizing IPSP’s and EPSP’s. Once the neuron has achieved enough EPSP’s to break the threshold an action potiential will be made. Just the opposite, if more IPSP’s are made by the neuron then an action potential will not occur. On top of this concept that is important

In the aspect that if the neuromuscular system doesn’t occur, most of the metabolic system does not work either because the muscles get signals to start working from the nervous system. The metabolic system comprises of the skeletal muscles of the body. The metabolic system is also a pay as you go system. Which means that you can only get the amount of energy out if it equal to the amount that you put in. There are also 3 basic systems that these muscles use to do work with aid of the neuromuscular system. The first energy system is the ATP-PCR system, this system is a highly explosive system that can only be used from 3-15 seconds. The next energy system is known as the anaerobic system. This system uses primarily stored glycogen for energy. This system alike the ATP-PCR system is mainly used at higher intensities of exercise. It can be utilized for about 15 seconds and upwards to about 3 minutes. The last metabolic system that is used is known as the aerobic system. This system is the system that can be used for the longest period of time as long as you keep fueling it as you go along with glucose and other substraits for energy. The aerobic system also uses oxygen and has the highest potential of making the most ATP compared to the other systems. In all aspects of these three systems they will all make ATP to generate energy. ATP-PCR can only make a limited amount of ATP because it is stored and our

The pulmonary system is the system at which the body is able to ventilate air in and out of the body. In this case we utilize oxygen that is being brought into the body and carbon dioxide that use blow off as a by product. The pulmonary system is also a purely pressureized system that is based all on gradients/partial pressures of air. The diaphram and the external intercostal muscles are important in this case because they will increase the volume inside the chest cavity which in turn decreses the pressure. The air from outside the body then rushes in because of this lower pressure that we have inside now. The air travels to the alveoli of the lungs where it is met for the capillary gas exchange. At this point oxygen is loaded on to the hemoglobin of the blood, which then transports it to the designated muscle that is completing its contraction during our exercise. Since the pulmonary system is based on these partial pressures. The partial pressure of oxygen is lower at the muscle so the oxygen is unloaded at the muscle from the hemoglobin. At this point in time carbon dioxide is also traded off into three different forms: Stored in platelets, Converted to bicarbonate, and some is stored in the hemoglobin. The hemoglobin then makes a trip back around to the lungs and the bicarbonate is turned back into carbon dioxide and water. At this sametime the carbon dioxide from the