Changes

: The [[heart]] is protected by the [[Rib Cage|rib cage]].

: The [[heart]] has 4 separate chambers; the [[Right Atrium]], [[Right Ventricle]], [[Left Atrium]] and [[Left Ventricle]].

{| class="wikitable"

|-

|[[File:HeartBloodFlow.png|center|300px]]

| style="height:20px; width:300px; text-align:center;" |A [[diagram]] showing the [[blood]] flow through the [[heart]].

{| class="wikitable"

|[[File:CG_Heart.gif|center|600px]]