diff --git a/lecture7.html b/lecture7.html
index 14798c1..18580aa 100644
--- a/lecture7.html
+++ b/lecture7.html
@@ -238,7 +238,7 @@ <h1>Blocking (Synchronous) I/O</h1>
 
     <div class="slide">
       <hgroup>
-        <h1>Non-Blocking (Asynchrnous) I/O</h1>
+        <h1>Non-Blocking (Asynchronous) I/O</h1>
       </hgroup>
       <div id="1kxkFc3Chl4qFXxH_4f2seuNbpBdENMyZWMRUmxd1p28" class="h-drawing" style="height: 220px"></div>
       <ul class="x-small">
@@ -248,7 +248,7 @@ <h1>Non-Blocking (Asynchrnous) I/O</h1>
           <li>The Web app registers events, OS triggers events when they occur</li>
           <li>The app may create working threads and controls their number</li>
         </ul>
-        <li>Outound connections</li>
+        <li>Outbound connections</li>
         <ul>
           <li>The app registers a callback that is called when the data is available</li>
           <li>Event loop</li>
@@ -373,7 +373,7 @@ <h1>Forward Proxy</h1>
 
     <div class="slide">
       <hgroup>
-        <h1>Forward Prox Sequence Diagram</h1>
+        <h1>Forward Proxy Sequence Diagram</h1>
       </hgroup>
       <div class="h-drawing" id="1F9GMscVnuf1Jex-2SMCc0phrtajyGmZtV-zMl9AqBXA" style="height: 270px"></div>
       <ul class="xx-small">
@@ -553,7 +553,7 @@ <h1>Backend Server Selection Options</h1>
             connections</li>
           <li>Time can be:</li>
           <ul>
-            <li>Time to receive the resonse header</li>
+            <li>Time to receive the response header</li>
             <li>Time to receive full response body</li>
           </ul>
         </ul>