The hormones FSH and LH are more active during the first half of the menstrual cycle. Based on the events of the calendar and the diagram on page 4, what role do these hormones likely serve?
The hormones FSH and LH are more active during the first half of the menstrual cycle. Based on the events of the calendar and the diagram on page 4, what role do these hormones likely serve?
Biology 2e
2nd Edition
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark
Chapter43: Animal Reproduction And Development
Section: Chapter Questions
Problem 3VCQ: Figure 43.17 Which of the following statements about the menstrual cycle is false? Progesterone...
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The hormones FSH and LH are more active during the first half of the menstrual cycle. Based on the events of the calendar and the diagram on page 4, what role do these hormones likely serve?
Transcribed Image Text:12 13 | 14 | 15 | 16 | 17 18 |19
Resource Page
MENSTRUAL CYCLE
Thickness of the Uterus
15 mm-
Ovulation C
FOLLICULAR PHASE
LUTEAL PHASE
10 mm
.
5 mm
O m
ovarian follicies
corpus luteum
5
10
15
20
25
30
Menstrual cycle
213 4|516
26 27 28
Day 18-25:
Uterine lining
detatches and
FSH
LH
estrogen
progesterone
menstruation
begins
Day I-7:
Uterus lining
begins to break
down and
menstruation
occurs
Day 18-25:
f fertilisation has
not occured, the
corpus luteum
fades away
00
Day 8-I1:
Lining of womb
starts to thickens
in preparation
for egg
Day 12-17:
Ovulation
10 11 12 /13
day 1
day 14
day 28
18
MENSTRUATION PROLIFERATIVE PHASE
b . .. .
SECRETORY PHASE
Ovulation
.
Follicular phase
Menstruation
Luteral phase
www
Transcribed Image Text:3.
New egg is
1
Uterus lining
and an egg are
Uterus lining is
thin after blood
-ovary
selected for
shed during
young
egg
maturation.
and tissue have
menstruation.
been lost.
11
13
Egg within
Uterus lining
is beginning
to thicken.
Mature egg is
released from
ovary
Fovary
ovary is almost
fully_mature.
maturing
egg
the ovary.
egg
15
17
19
21
Egg is in the
oviduct. No
Uterus lining
continues to
Uterus is very.
thick - egg
egg
sperm cells are
present. Egg is
not fertilized.
thicken. The
egg falls out of
the fallopian
moves lower in
the uterus.
egg
tube.
22
23
24
26
27
28
Uterus lining is
at its thickest.
Lining of the uterus and egg are
ready to be shed. They are no
longer needed.
Go back to
day 1.
The egg moves
even lower in
egg
the uterus.
FIGURE 1. Day by day changes in the menstrual cycle - no fertilization of egg.
To encourage collaboration, one calendar
has been provided for each pair of students.
Therefore, please work together.
The cycle repeats itself.
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