Model 2 - Follicle Development 1 2 3 4 5 5. Model 2 shows the changes in an ovarian follicle over an average 28-day cycle. Note the numbering of the days along the bottom of the model. The first five days have already been numbered. Complete the numbering through day 28 on Model 2. 6. Day 1 shows a primary follicle. Label this above it on Model 2. 7. Refer to the graph you made for Model 1. On what day does the level of FSH initially dip? 8. The primary follicle is one of many follicles growing in the ovary during this time, but the only one that will eventually outcompete the others for FSH when the levels drop on the day you selected in #7. At this time, it becomes the dominant follicle. Label the appropriate follicle pictured in Model 2 as the dominant follicle. 9. The dominant follicle will be the only one that continues to mature, fully completing its first meiotic division and becoming a secondary oocyte as a result of the surge in LH that happens around this time. Refer to the graph you made for Model 1. On what day does this happen? 10. The LH surge causes a quick cascade of events that is followed by ovulation, or the release of the oocyte from the follicle. Based on Model 2, when does this occur? 11. The days that lead up to ovulation are considered the follicular phase, characterized by the maturation of the dominant follicle and its oocyte. The days following ovulation are considered the luteal phase. Label ovulation and these two phases on Model 2, in the space beneath it. 12. The luteal phase is characterized by the development of the corpus luteum. This structure forms from the remains of the erupted follicle, and secretes high levels of progesterone throughout the rest of the month to prepare the body for pregnancy if fertilization of the ovulated oocyte by a sperm occurs. If it doesn't, the corpus luteum will start to degenerate and hormonal secretion will end. Based on Model 2, about how many days after ovulation will the corpus luteum start to degenerate? Reproduction Unit It's Not Rocket Science® 2019 12
Model 2 - Follicle Development 1 2 3 4 5 5. Model 2 shows the changes in an ovarian follicle over an average 28-day cycle. Note the numbering of the days along the bottom of the model. The first five days have already been numbered. Complete the numbering through day 28 on Model 2. 6. Day 1 shows a primary follicle. Label this above it on Model 2. 7. Refer to the graph you made for Model 1. On what day does the level of FSH initially dip? 8. The primary follicle is one of many follicles growing in the ovary during this time, but the only one that will eventually outcompete the others for FSH when the levels drop on the day you selected in #7. At this time, it becomes the dominant follicle. Label the appropriate follicle pictured in Model 2 as the dominant follicle. 9. The dominant follicle will be the only one that continues to mature, fully completing its first meiotic division and becoming a secondary oocyte as a result of the surge in LH that happens around this time. Refer to the graph you made for Model 1. On what day does this happen? 10. The LH surge causes a quick cascade of events that is followed by ovulation, or the release of the oocyte from the follicle. Based on Model 2, when does this occur? 11. The days that lead up to ovulation are considered the follicular phase, characterized by the maturation of the dominant follicle and its oocyte. The days following ovulation are considered the luteal phase. Label ovulation and these two phases on Model 2, in the space beneath it. 12. The luteal phase is characterized by the development of the corpus luteum. This structure forms from the remains of the erupted follicle, and secretes high levels of progesterone throughout the rest of the month to prepare the body for pregnancy if fertilization of the ovulated oocyte by a sperm occurs. If it doesn't, the corpus luteum will start to degenerate and hormonal secretion will end. Based on Model 2, about how many days after ovulation will the corpus luteum start to degenerate? Reproduction Unit It's Not Rocket Science® 2019 12
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Follicle development
Transcribed Image Text:Model 2 - Follicle Development
1
2
3 4 5
5. Model 2 shows the changes in an ovarian follicle over an average 28-day cycle. Note the numbering of
the days along the bottom of the model. The first five days have already been numbered. Complete the
numbering through day 28 on Model 2.
6. Day 1 shows a primary follicle. Label this above it on Model 2.
7. Refer to the graph you made for Model 1. On what day does the level of FSH initially dip?
8. The primary follicle is one of many follicles growing in the ovary during this time, but the only one that
will eventually outcompete the others for FSH when the levels drop on the day you selected in #7. At
this time, it becomes the dominant follicle. Label the appropriate follicle pictured in Model 2 as the
dominant follicle.
9. The dominant follicle will be the only one that continues to mature, fully completing its first meiotic
division and becoming a secondary oocyte as a result of the surge in LH that happens around this time.
Refer to the graph you made for Model 1. On what day does this happen?
10. The LH surge causes a quick cascade of events that is followed by ovulation, or the release of the
oocyte from the follicle. Based on Model 2, when does this occur?
11. The days that lead up to ovulation are considered the follicular phase, characterized by the maturation
of the dominant follicle and its oocyte. The days following ovulation are considered the luteal phase.
Label ovulation and these two phases on Model 2, in the space beneath it.
12. The luteal phase is characterized by the development of the corpus luteum. This structure forms from
the remains of the erupted follicle, and secretes high levels of progesterone throughout the rest of the
month to prepare the body for pregnancy if fertilization of the ovulated oocyte by a sperm occurs. If it
doesn't, the corpus luteum will start to degenerate and hormonal secretion will end. Based on Model 2,
about how many days after ovulation will the corpus luteum start to degenerate?
Reproduction Unit
It's Not Rocket Science® 2019
12
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