The answer is skin
The first line of defence is your innate immune system. Level one of this system consists of physical barriers like your skin and the mucosal lining in your respiratory tract. The tears, sweat, saliva and mucous produced by the skin and mucosal lining are part of that physical barrier, too.
You would have physical manifestations of Ecchymosis
Answer:
Intermediate
Explanation:
Medial structures are located towards the body's median plane, or midline; the midline divides the body from head to toe into left and right halves. ... Areas between these structures are defined as intermediate. Example: In relation to the breastbone (medial) and shoulder (lateral), the collarbone is intermediate
