¿Qué son los circuitos de defensa?
![IntraMed](data:image/svg+xml,<?xml version="1.0" encoding="UTF-8"?>%0A<svg id="Capa_1" xmlns="http://www.w3.org/2000/svg" version="1.1" viewBox="0 0 1080 315">%0A <defs>%0A <style>%0A .st0 {%0A fill-rule: evenodd;%0A }%0A%0A .st0, .st1 {%0A fill: %23002bc7;%0A }%0A%0A .st2 {%0A fill: %23fff;%0A }%0A </style>%0A </defs>%0A <g>%0A <circle class="st2" cx="141.5" cy="179.93" r="135.02"/>%0A <g>%0A <path class="st2" d="M350.28,126.97v106.62c0,7-4.04,11.22-10.41,11.22s-10.5-4.22-10.5-11.22v-106.62c0-7,4.13-11.22,10.5-11.22s10.41,4.22,10.41,11.22Z"/>%0A <path class="st2" d="M459.96,184.86v49.09c0,6.82-4.04,10.86-10.23,10.86s-10.14-4.04-10.14-10.86v-47.03c0-13.28-6.73-20.28-20.73-20.28-7.81,0-15.53,2.15-20.19,4.85v62.47c0,6.82-4.04,10.86-10.23,10.86s-10.14-4.04-10.14-10.86v-66.68c0-6.37,1.35-9.24,7.09-12.21,5.38-3.14,18.49-8.17,33.48-8.17,26.66,0,41.11,14.36,41.11,37.96Z"/>%0A <path class="st2" d="M505.83,137.92v10.68h24.14c7,0,10.59,3.59,10.59,9.42s-3.59,9.33-10.59,9.33h-24.14v45.05c0,9.78,3.86,14.09,12.74,14.09,4.76,0,8.08-1.08,10.77-1.98,2.15-.72,3.95-1.52,6.28-1.52,4.58,0,8.44,3.77,8.44,9.06s-3.14,8.08-7.99,9.96c-5.21,1.97-11.76,3.59-18.76,3.59-19.03,0-31.86-10.86-31.86-31.23v-76.47c0-6.82,3.95-10.77,10.14-10.77s10.23,3.95,10.23,10.77Z"/>%0A <path class="st2" d="M559.96,233.95v-55.73c0-19.3,11.76-31.32,30.69-31.32,6.01,0,11.22.72,15.17,1.89,5.83,1.61,9.87,4.67,9.87,10.32,0,6.28-4.22,9.87-8.44,9.87-1.97,0-3.41-.36-4.85-.72-3.05-.81-5.92-1.26-9.69-1.26-8.44,0-12.39,4.04-12.39,12.39v54.57c0,6.82-3.95,10.86-10.14,10.86s-10.23-4.04-10.23-10.86Z"/>%0A <path class="st2" d="M624.04,214.83c0-15.08,11.76-28.9,36.08-28.9,7.81,0,14.72.99,22.89,3.14v-7.45c0-10.86-5.74-16.25-20.28-16.25-6.37,0-12.74,1.62-16.69,3.23-2.69.99-5.21,1.88-7.45,1.88-4.76,0-8.53-3.68-8.62-8.71,0-4.22,2.24-7.54,7.81-9.69,6.19-2.6,15.8-5.21,26.48-5.21,24.5,0,38.41,11.04,38.41,35.27v46.13c0,3.68-.99,5.56-3.77,7.45-5.65,3.86-19.57,9.87-37.87,9.87-23.78,0-36.98-13.37-36.98-30.78ZM662.73,228.84c7.27,0,14.81-2.06,20.28-4.94v-20.19c-7.45-2.24-13.55-3.23-20.37-3.23-12.83,0-19.21,6.28-19.21,14.36,0,8.89,7.54,14,19.3,14Z"/>%0A <path class="st2" d="M724.12,235.12c0-.81.09-2.06.18-2.78l13.73-96.57c2.15-15.17,9.51-20.01,20.1-20.01,9.51,0,16.78,3.95,19.66,19.12l18.4,85.71c.45,1.62.72,2.33,1.98,2.33,1.35,0,1.7-.72,2.06-2.42l18.31-85.62c2.87-15.17,10.05-19.12,19.57-19.12,10.68,0,17.95,4.85,20.01,20.1l13.73,96.03c.18,1.44.27,2.24.27,3.32,0,5.84-3.95,9.6-9.69,9.6-6.55,0-10.14-3.5-10.86-10.05l-12.12-94.86c-.27-1.89-.72-2.51-1.88-2.51-.99,0-1.53.45-1.88,2.15l-19.57,88.22c-2.42,11.58-8.53,17.05-18.13,17.05-10.23,0-15.71-5.57-18.22-17.14l-19.48-88.04c-.45-1.62-.99-2.24-1.79-2.24-1.17,0-1.71.72-1.97,2.6l-11.85,94.78c-.81,6.64-4.31,10.05-10.41,10.05s-10.14-3.59-10.14-9.69Z"/>%0A <path class="st2" d="M891.08,208.91c-.63-6.73-.63-17.68-.09-23.96,2.06-22.17,18.04-37.87,42.18-37.87s39.67,16.06,39.67,39.67v5.3c0,9.87-1.97,11.31-10.86,11.31h-51.88c0,1.26,0,2.6.09,3.86.72,12.03,9.96,20.01,24.32,20.01,7.9,0,13.91-1.71,18.85-3.68,2.96-1.08,4.85-2.06,7.45-2.06,4.85,0,8.44,3.14,8.44,8.44.09,5.12-3.77,8.08-7.54,9.78-6.91,3.32-16.78,5.92-27.64,5.92-24.5,0-41.01-15.08-42.99-36.71ZM954,188.81c1.26-15.44-7.81-24.32-21.45-24.32s-21.54,8.98-22.35,22.08c0,.72-.09,1.53-.09,2.24h43.89Z"/>%0A <path class="st2" d="M1074.18,125.17v102.85c0,3.95-1.08,5.92-3.86,7.81-5.83,3.86-20.1,9.78-37.16,9.78-23.87,0-39.22-14.81-41.19-36.17-.72-7.27-.72-19.21,0-26.39,1.97-21.36,17.32-36.17,39.4-36.17,8.17,0,16.78,2.06,22.44,4.85v-26.57c0-6.82,3.95-10.86,10.23-10.86s10.14,4.04,10.14,10.86ZM1033.97,225.87c6.91,0,15.53-2.06,19.83-5.11v-49c-4.31-3.05-12.93-5.12-19.83-5.12-13.37,0-20.73,7.99-21.81,19.75-.54,6.55-.45,13.82,0,19.74,1.08,11.76,8.44,19.75,21.81,19.75Z"/>%0A </g>%0A <g>%0A <path class="st1" d="M101.42,217.17c0-.64.07-1.63.14-2.2l10.87-76.46c1.71-12.01,7.53-15.85,15.92-15.85,7.53,0,13.29,3.13,15.56,15.14l14.57,67.86c.36,1.28.57,1.85,1.56,1.85,1.07,0,1.35-.57,1.63-1.92l14.5-67.79c2.27-12.01,7.96-15.14,15.49-15.14,8.46,0,14.21,3.84,15.85,15.92l10.87,76.04c.14,1.14.21,1.78.21,2.63,0,4.62-3.13,7.6-7.67,7.6-5.19,0-8.03-2.77-8.6-7.96l-9.59-75.11c-.21-1.49-.57-1.99-1.49-1.99-.78,0-1.21.36-1.49,1.71l-15.49,69.85c-1.92,9.17-6.75,13.5-14.36,13.5-8.1,0-12.44-4.41-14.43-13.57l-15.42-69.71c-.36-1.28-.78-1.78-1.42-1.78-.92,0-1.35.57-1.56,2.06l-9.38,75.04c-.64,5.26-3.41,7.96-8.24,7.96s-8.03-2.84-8.03-7.67Z"/>%0A <path class="st1" d="M90.62,131.29v84.42c0,5.54-3.2,8.88-8.24,8.88s-8.31-3.34-8.31-8.88v-84.42c0-5.54,3.27-8.88,8.31-8.88s8.24,3.34,8.24,8.88Z"/>%0A </g>%0A <g>%0A <path class="st0" d="M74.36,202.14c19.92.79,54.3-4.62,92.4-15.33,58-16.32,102.67-38.77,99.76-50.15-2-7.85-26.05-8.39-59.77-2.65,23.98-2.82,37.51-1.37,39.11,4.9,2.82,11.03-37.79,32.76-93.95,48.56-1.26.35-2.51.7-3.76,1.04,0,0,0,0-.01,0-13.29,3.95-50.37,13.62-73.78,13.62Z"/>%0A <path class="st0" d="M191.55,191.02c-13.03,4.75-27.19,9.32-42.09,13.5-70.38,19.79-130.56,23.59-134.41,8.48-2.65-10.4,20.1-26.01,58.76-41.85-26.73,12.73-38.09,24.13-35.96,32.45,3.73,14.63,59.37,10.95,127.5-8.22,36.59-10.29,68.58-22.95,89.79-34.73-9.63,6.73-23.48,14.01-40.32,21.2-4.91,2.44-18.07,7.34-23.28,9.16Z"/>%0A </g>%0A </g>%0A</svg>%0A)