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)

--Thomas Dangerfield 13:12, 20 August 2009 (EST)

Lab 4 Q1. Into what structure do most blood vessels empty before they enter the embryonic heart? The sinus venosus.

Lab 4 Q2. What do the dorsal aortas become in the adult? The descending aorta.

Lab 4 Q3. What are the layers of cells found in a tertiary villi? mesenchyme differentiates into blood vessels and cells, forms arteriocapillary network, fuse with placental vessels, developing in connecting stalk

--Thomas Dangerfield 13:05, 27 August 2009 (EST)

Lab 5 Q1. What was the question I said in the respiratory lecture would be part of this week's assessment? Is it more common for a congenital diaphragmatic hernia to happen on one side or both?

Lab 5 Q2. What is the answer to the above question? They occur on one side only, with the majority of cases occurring on the left side of the diaphragm.

Lab 6 Q1. Which is the more common clefting, cleft lip or cleft palate? Cleft lip is more common with an 8.1-9.9/1000 live births occurrence rate compared to Cleft palate which has a 4.8-6/1000 live births occurrence rate.

Lab 6 Q2. What structures does pharyngeal pouch 1 form? Pharyngeal pouch forms the tubotympanic recess.

Lab 6 Q3. Neural crest forms which cells within the skin? Melanocytes.

--Thomas Dangerfield 14:27, 3 September 2009 (EST)