Which directional terms can be used to specify the relationships between:
a. Elbow and shoulder: The shoulder is proximal to the elbow.
b. left and right shoulders: The left shoulder is contralateral to the right shoulder.
c. Sternum and the humerus: The humerus is distal to the sternum
d. Heart and the Diaphragm: The heart is superior to the diaphragm.
e. Knees and tibia: The tibia is inferior to the knees.
f. Liver and gallbladders: The gallbladder is inferior to the liver.
g. Spleen and liver: The liver is medial to the spleen.
h. Kidneys and small intestines: The kidney is medial to the small intestines.
i. 3rd and 5th digits: The 5th digits are lateral to the 3rd digits.
j. Sternum and thymus glands: The sternum is anterior to the thymus glands.