Given below are groups of terms. In each group the first pair indicates the relationship between the two terms. Rewrite and complete the second pair on a similar basis. Example: Oxygen : Inspiration :: Carbon dioxide : Expiration
Foetus : Amnion :: Heart : __________
Topic: Pericardium
Answer
PERICARDIUM.
The relationship is STRUCTURE : ITS PROTECTIVE MEMBRANE. The amnion encloses the foetus, so the pericardium encloses the heart.
The protective membranes worth knowing as a set, since any may be asked: FOETUS — AMNION HEART — PERICARDIUM BRAIN and SPINAL CORD — MENINGES LUNGS — PLEURA ABDOMINAL ORGANS — PERITONEUM
Each is double-layered with fluid between the layers, and in every case that fluid does the same two jobs: it CUSHIONS against shock and REDUCES FRICTION as the organ moves.