Packet N: Bonus 7
This stage of embryonic development requires laminin-111 for the assembly of Reichart’s membrane and is characterized by pinopode formation. For 10 points each:
[10h] Name this stage whose namesake “window” usually occurs between day 19 and 21 of the menstrual cycle. After this stage occurs, fused syncytiotrophoblasts (“syn-cytio-tropho-blasts”) invade the decidua basalis, which ultimately forms chorionic villi (“kor-ee-ON-ic VILL-eye”).
ANSWER: implantation [accept word forms of blastocyst implanted in the endometrium; accept nidation or embedding or apposition or zona hatching; prompt on adhesion]
[10m] The innermost cytotrophoblasts secrete a hyperglycosylated form of this hormone that further promotes implantation. This hormone maintains the corpus luteum and is detected in a pregnancy dipstick test.
ANSWER: human chorionic gonadotropin [or hCG; accept beta-hCG; accept hyperphosphorylated human chorionic gonadotropin or hCG-H; reject partial answers]
[10e] Most ectopic pregnancies occur after improper implantation of the blastocyst in this paired structure. Fertilization normally occurs in this structure’s ampulla, which connects the infundibulum to the isthmus.
ANSWER: Fallopian tubes [accept uterine tubes; or ovarian tubes; accept oviducts]
<Warwick A, Biology> | Packet N - Simon Fraser A, Carleton A, Georgia Tech A, Claremont A, Warwick A, Columbia B
| Heard | PPB | E % | M % | H % |
|---|---|---|---|---|
| 39 | 10.51 | 69% | 23% | 13% |
Conversion
| Team | Opponent | Part 1 | Part 2 | Part 3 | Total | Parts |
|---|---|---|---|---|---|---|
| Guelph | Western C | 0 | 0 | 10 | 10 | E |
| McGill A | Toronto D | 0 | 0 | 0 | 0 | |
| McGill B | Toronto F | 0 | 0 | 0 | 0 | |
| McMaster A | Western A | 10 | 10 | 10 | 30 | HME |
| McMaster B | UBC B | 0 | 0 | 0 | 0 | |
| Toronto B | Western B | 0 | 0 | 0 | 0 | |
| Toronto C | Ottawa | 0 | 0 | 10 | 10 | E |
| Toronto G | Queen's | 0 | 0 | 10 | 10 | E |
| Toronto Metropolitan | Toronto E | 0 | 0 | 0 | 0 | |
| UBC A | Waterloo B | 0 | 0 | 10 | 10 | E |
| Waterloo A | Brock | 0 | 10 | 0 | 10 | M |
Summary
| Tournament | Edition | Match | Heard | PPB | E % | M % | H % |
|---|---|---|---|---|---|---|---|
| California (South) | Main Site | ✓ | 4 | 5.00 | 50% | 0% | 0% |
| Canada | Main Site | ✓ | 11 | 7.27 | 46% | 18% | 9% |
| Great Lakes | Main Site | ✓ | 5 | 14.00 | 100% | 40% | 0% |
| Northeast | Main Site | ✓ | 5 | 10.00 | 60% | 20% | 20% |
| UK | Main Site | ✓ | 6 | 16.67 | 100% | 50% | 17% |
| Upper Mid-Atlantic | Main Site | ✓ | 8 | 11.25 | 75% | 13% | 25% |