THE SKELETON. 63 



3. What does the condition of the clavicle in the cat indicate as to 

 its past history? 

 4^-4. Draw the medial aspect of the scapula and label all parts. 



5. What is the significance of the coracoid process? 



6. Which processes of the scapula derive their names from their 

 location and which from their shape? 



7. How do you distinguish the right from the left scapula? 



8. Draw the caudal aspect of the humerus and label all features. 



9. Describe what is seen in looking directly at the distal articulat- 

 ing surfaces of the humerus. 



10. How do you distinguish the right from the left humerus? 



11. What features of the humerus derive their names from their 

 shape? 



xi2. Draw the medial or inner aspect of the ulna and label all 

 features. 



13. What features of the ulna derive their names from their form? 



14. How do you distinguish the right from the left ulna? 



15. Describe the articulations of the radius. 



x 16. Draw lateral aspect of radius and label all features. 



17. Describe the condition of the bones of forearm in the horse and 

 its ancestors. 



18. In a five-month fetus of the horse the ulna is distinct from 

 radius and complete, while in the mature animal but little more than the 

 distal third remains, and is anchylosed to the radius. Explain sig- 

 nificance of this fact. 



19. Draw ventral aspect of carpus and label all parts. 



20. Wherein is the chief difference between carpus of cat and man? 



21. Draw the lateral aspect of the third metacarpal and label all 

 features. 



22. How do you distinguish the distal from the proximal end of 

 the metacarpals? 



23. Describe the variation in the number of metacarpals in mammals. 



24. Describe the usual arrangement of the phalanges in mammals 

 having five digits. 



25. How do you distinguish a phalanx from a metacarpal? 



26. Give the number of functional digits in forelimb of dog, pig, 

 cow, sheep, horse, and rabbit. 



27. Name some mammals with atrophied digits. 



28. What is the significance of these? 



29. In the evolution of the perissodactyls (odd-toed ungulates) de- 

 scribe the order in which the digits are lost. 



30. In t;he Bovidse and Cervidae which two digits are functional? 



