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Lecture Objectives 2

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Describe the ovarian and uterine cycle ... Vas Deferens (vasectomy) Urethra. Head of the sperm (acrosome) is important for? Midpiece? ... – PowerPoint PPT presentation

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Title: Lecture Objectives 2


1
Lecture Objectives 2
  • Hormonal regulation in males/females
  • Name the glands and their secretions
  • Describe the path sperm follow
  • Describe the ovarian and uterine cycle
  • Know the structure and function of the female
    reproductive system

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3
Hormonal Control
  • Testosterone, Cells of Leydig
  • (lobes of testes)
  • Stimulates spermatogenesis
  • Secondary sex characteristics

4
Reproductive Hormones
  • Hypothalamus
  • Gonadotropin releasing hormone
  • Anterior Pituitary
  • Gonadotropic hormones
  • Follicle Stimulating Leutinizing
  • hormone (FSH) hormone (LH)

5
Functions of FSH LH
  • FSH
  • Production of sperm Produces Estrogen
  • in males
    and some Progesterone
  • in females
  • LH
  • Controls production of Secretes
    Progesterone
  • testosterone in males and some
    estrogen in females

6
Inhibin
  • Sperm Count High
  • Inhibin release increases
  • Inhibits
  • Follicle Stimulating Leutinizing
  • hormone (FSH) hormone (LH)

7
  • Sperm Count Low
  • Inhibin release decreases
  • Follicle Stimulating Leutinizing
  • hormone (FSH) hormone (LH)

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9
Route
  • Produced in the seminiferous tubules (testes)
  • Epididymis
  • Vas Deferens (vasectomy)
  • Urethra
  • Head of the sperm (acrosome) is important for?
    Midpiece? Tail?

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14
Eggs vs Sperm
  • Birth - 2 million (Meiosis I)
  • Puberty 200,000 ovary
  • 450 opportunities to become pregnant
  • The ability of a woman to become pregnant must be
    terminated at some point (menopause) Why? Recent
    older moms?

15
Miracle of Life Nova The Third Trimester
16
Miracle of Life
  • Conception and Development of human life

17
The encounter
18
The female counterpart
19
The male counterpart
20
Finding each other
21
The meeting - competition
22
The penetration
23
The First Hour
24
Coming together
25
The union - a new life begins
26
Thirty hours - first portrait
27
Two days - a mass of cells
28
Making it to the womb
29
Four days - starting to take shape
30
Four days - looking for a home
31
Eight days - a closer look
32
Eight days - finding the first home
33
11 days - making connection
34
3 weeks - a primitive mass
35
4 weeks - forming the basic design
36
4 weeks - a sheltered world
37
4 weeks - forming the life support
38
4 weeks - tiny prehistoric creature
39
5 weeks - visible to the world
40
Five weeks - a first closeup
41
6 weeks - forming the backbone
42
6 weeks - getting cute
43
6 weeks - linking two circulations
44
8 weeks - every organ in place
45
8 weeks - forming the eyes
46
16 weeks - a human face
47
16 weeks - taking form
48
18 weeks - running out of space
49
39 weeks - time to push
50
Push harder
51
We are going to make it
52
Hello!
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55
Female Reproductive System
  • Ovaries Produce?
  • Oviducts Location of ?
  • Uterus Location of developing fetus
  • Cervix (Pap Test) Opening to the uterus
  • Vagina Organ of copulation and birth canal

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57
Fertilization and implantation
58
The Menstrual Cycle
  • Days 1-14 Proliferation
  • Days 1-4 sloughing
  • Days 6-13 endometrium is rebuilding
  • Cervix secretes an thin alkaline mucous (why?)

59
  • Day 14 Ovulation
  • Hormone LH surges
  • Enlarged fluid filled Graafian follicle (pg.
    294-295 of the text)
  • Light increase in temperature

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Female Reproductive System
Figure 16.4A
63
Ovarian Cycle
Figure 16.6
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