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According to the special theory of relativity,if a 30-year old astronaut sent on a space mission is accelerated to speeds close to that of light,and then returns to earth after 20 years as measured on earth,what would be his biological age upon returning?
Anterior Interventricular Sulcus
A groove on the heart's surface that marks the boundary between the left and right ventricles and contains blood vessels that supply the heart muscle.
Papillary Muscles
Muscles located in the ventricles of the heart that attach to the cusps of the atrioventricular valves via the chordae tendineae and help prevent valve inversion.
Apex
The top or highest part of something, often pointed; used in various anatomical contexts.
Auricles
The external part of the ear, also known as the pinna, which is visible on the sides of the head.
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