Question 1
Which of the following systems is the first of those listed below to begin development in the human embryo?
◦ nervous system
◦ excretory system
◦ reproductive system
◦ skeletal system
◦ endocrine system
Question 2
Which of the following systems is the last of those listed below to begin development in the human embryo?
◦ nervous system
◦ excretory system
◦ reproductive system
◦ skeletal system
◦ respiratory system