Z3217686

Lab 1 Q1: What is the protein that sperm binds to on the surface of the egg? ZP3

Lab 1 Q2: Name the three stages of follicle development in the ovary: Primordial, pre-antral and Graafian. --Thomas Dangerfield 14:58, 30 July 2009 (EST) --Thomas Dangerfield 13:09, 6 August 2009 (EST)

Lab 2 Q1: What factor do the synctiotrophoblast cells secrete to support the ongoing pregnancy? (hCG) Human Chorionic Gonadotropin

Lab 2 Q2: What does the corpus luteum secrete to prevent continuation of the menstrual cycle? (hCG) release encourages the ovary to release oestrogen and progesterone.

Lab 2 Q3: What are the 2 main tissues to be derived from the germ cell layer continuous with the lining of the amniotic sac? Ectoderm - nervous system and epidermis epithelium

--Thomas Dangerfield 14:25, 6 August 2009 (EST)

--Thomas Dangerfield 13:49, 13 August 2009 (EST)

Lab 3 Q1: What period of human development (in weeks) do the 23 Carnegie stages cover? The first 8 weeks of human development.

Lab 3 Q2: What part of the somite will contribute to the vertebral column? The sclerotome contributes to the vertebral column.

Lab 3 Q3. At what Carnegie stage does the human neural tube normally completely close? Carnegie stage 13 is when the human neural tube normally closes completely.

--Thomas Dangerfield 14:01, 13 August 2009 (EST)