Z3215682

Lab 1 Questions

1. What is the protein that the sperm binds to on the surface? ZP3 protein

2. Name the 3 stages of follicle development in the ovary? 1-Primordial follicle 2-Preantral follicle 3-Antral follicle

--Carly Mooney 13:10, 6 August 2009 (EST)

Lab 2 Questions

1. What factor do the synctiotrophoblast cells secrete to support the ongoing pregnancy? hCG – Human Chorionic Gonadotropin

2. What does the corpus luteum secrete to prevent continuation of the menstrual cycle?

oestrogen and progesterone

3. What are the 2 main tissues to be derived from the germ cell layer continuous with the lining of the amniotic sac? Epidermis epithelium Nervous tissue

--Carly Mooney 13:15, 13 August 2009 (EST)

Lab 3 Questions

1. What period of human development (in weeks) do the 23 Carnegie stages cover? Week 8

2. What part of the somite will contribute to the vertebral column? Cells differentiate to form sclerotome, which forms ventral column

3. At what Carnegie stage does the human neural tube normally completely close? By stage 13 the neural tube is completely closed

--Carly Mooney 13:08, 20 August 2009 (EST)

Lab 4 Questions

1.