136 ZOOLOGY. 



17. What is membrane bone? What is cartilage bone? 

 Discuss their mutual relationship. 



18. What is an excretion ? What are the chief excretory 

 products of an animal? How are they removed ? 



19. Describe the rabbit's liver, explaining (a) its position 

 in the body, (b) its structure, gross and minute, (c) its blood- 

 supply, (d) its functions. 



20. Describe the minute anatomy of the kidney, and the 

 functions of the several parts. 



v/21. What is ciliated epithelium ? Where does it occur- 

 in the rabbit ? 



22. Describe the mechanism of respiration. What is the 

 relation of respiration to the general life of the animal 1 



23. What are the functions of the skin 2 Describe its 

 structure. 



24. Name any structures that appear to you to be vestiges 

 or rudiments, i.e. structures without adequate physiologic al 

 reason, in the rabbit's anatomy. How are such structures 

 interpreted ? 



25. Describe the structure of striated muscular fibre. 

 Describe its functions, and the various means by which they 

 may be called into activity. 



26. Describe the characters and structure of the blood of 

 the rabbit. What is the lymphatic system ? Describe its 

 relation to the blood system in a mammal. 



27. Describe the structure of (a) blood, (b) hyaline carti- 

 lage, (c) bone, in the rabbit ; (d), point out the most 

 important resemblances and differences between these 

 tissues ; (e) state what you know of the development of the 

 same tissues. 



28. Describe the lymph and the lymphatic system of a 

 vertebrate. 



29. Describe a typical animal cell, and compare any two 

 tissue cells you may choose to select. 



30. Explain the biological use of the term variation. 

 Distinguish clearly between the different kinds of variation. 

 Illustrate your answer by examples. 



31. Describe the different kinds of skeletal tissue found 

 in the vertobrata. 



