a. Name the endocrine organ labeled A. b. Name one hormone produced by this endocrine organ.

a. What is the name of the part of the pharynx labeled A? b. What is the name of the part of the pharynx labeled B? c. What is the name of the part of the pharynx labeled C? d. Which part is an airway only?

a. What layer of the trachea is indicated by the pointer? b. What cells make up this layer?

20a. What is the name of the structure indicated by pin A? __________ 20b. What is the name of the structure indicated by pin B? __________

17a. At what stage is the follicle indicated by the pointer? _______________

23a. At what stage is the follicle indicated by the pointer? _______________

13a. At what stage is the follicle indicated by the pointer? _______________ 13b. What is the name of the fluid-filled space of this follicle? _______________

[24]

Answer the questions in numerical order [4] [5]

18a. At what stage of development is the embryo indicated by the pointer? _______________