Mindblown: a blog about philosophy.

Within a body cavity.  

Within a cavity.  

Within cartilage.  

Within the heart.  

Within the envelope containing a part, organ, or organism. Inside a capsule, typically referring to the capsular ligament of a joint.  

Within a small anatomic canal.  

Within a breathing tube.  

Within the ear.  

Within a small chamber of the heart (atrium). Inside an atrium, which is one of the heart’s two upper chambers.    

Within a joint.