Across
- 1. secrete hormones externally through ducts
- 4. animals that live in aquatic places
- 7. is produced by the luteal cells of the corpus luteum
- 9. is highest in the last trimester
- 12. are produced in the theca and granulosa cells of a follicle
- 13. is produced by mare placenta
- 14. involes two parents
- 15. secrete hormones into the bloodstream
Down
- 2. involves one parent
- 3. are chemical messengers
- 5. animals that lay shelled eggs
- 6. are used by man ex: pregnancy test
- 8. is produced in the leydig cells
- 10. is produced in the granulosa cells of the follicle
- 11. produced in the luteal cells of the luteum