1. Animal Reproduction and Development
Reproduction Song

2. Animals reproductive by asexual and sexual methods:
Asexual is the production of offspring with genes all from one individual, without the fusion of gametes.
Sexual involves formation of gametes and fertilization, genetic variation
Asexual Methods Include:
Budding in Hydra Starfish Regeneration
Gemmules in Sponges

3. Parthenogenesis: an unfertilized egg develops
Honey bees: drones are males and are produced parthenogeneticly and female workers and queens form from fertilized eggs.
Queen Worker (female) Drone (male)

4. Sexual Reproduction
Hermaphroditism: individual has both male and female reproductive systems
Earthworm

5. Fertilization can occur externally or internally
Aquatic animals tend to be external
Terrestrial animals tend to be internal
Development can be external in the water, external on land, or internal.
Oviparous: lay eggs, Amniotic eggs are terrestrial eggs
Ovoviparous: live birth from eggs (some sharks and snakes)
Viviparous: live placental birth

6. What are the adaptive values of each style off sexual animal reproduction?
Number of Eggs: ?
Parental Care: ?
Habitat: ?
Introduction to Reproduction System

7. Complete the type of sexual reproduction typical of each group
Vertebrates
Fertilization
Development
Parental Care
Fish
Amphibian
Reptile
Bird
Mammal

8. Reproductive System of the Human Male
Male Reproductive System video
Male Reproductive System detailed video

9. The male reproductive system produces sperm cells and provides a mechanism for delivering them to the female's body.
Identify the role of:
Testes
Epididymis
Vas deferens
Scrotum

10. Outline the functions of the male reproductive organs
Vasectomy Surgery video

11. Hormonal control of the Testes

13. Development of Eggs and Sperm

14. Spermatogenesis
Meiosis produces gametes in the seminiferous tubules.

15. Close up look at seminiferous tubules video

16. Seminiferous Tubules synthesize sperm Sperm cells
Sperm Structures

17. Female Reproductive System

18. Female Reproductive System
Female Reproductive System video

19. Ovary Follicle

20. Oogenesis
This is the state of the egg when fertilized

21. Stages of Development in the Ovary
Ovarian Cycle video

24. Identify the stages of the cycle
What happens in the ovary, uterus, and pituitary glands?
Uterine Cycle video
Menopause: cessation of cycle, ages 46-54, ovaries lose response to FSH & LH

25. Formation of the zygote and early post-fertilization events

26. Cleavage occurs over several days following fertilization
Cleavage occurs over several days following fertilization. The zygote divides as it travels through the oviduct. By the time the cilia of the oviduct deliver the embryo to the uterus, the embryo is a ball of cells called a blastocyst. The blastocyst implants in the endometrium.

27. A blastocyst forms nearly a week after fertilization
Four membranes protect and nourish the embryo, which consists of three tissue layers.

28. Nutrients and waste products are exchanged between the fetus and the mother within the placenta. The umbilical vein (red) carries oxygen-rich blood and nutrients to the fetus. The umbilical arteries are blue, indicating that they carry oxygen-depleted blood and waste products away from the fetus.

29. Placental circulation: materials are exchanged by diffusion, active transport, and selective absorption. Not by direct blood contact.
Structure and function of the placenta video

30. Human fetal development:
Amniotic Sac
5 weeks weeks 20 weeks
Blood Incompatibility video

31. Hormonal induction of labor

32. Name the structures and its role in reproduction and metabolism

33. Name the structures and its role in reproduction and metabolism

34. Name the phases and state of the organs.
Name the hormones:
Black:
Red:
Blue:
Green:

35. Animal Development Epigenesis: animal emerges gradually from the egg
Preformation: shows infant in sperm from 1694 engraving “homunculus”

36. Fertilization in Mammals
Zona pellucida
Changes that occur in the egg after fertilization video

37. Cleavage partitions the zygote into many smaller cells
Rapid cell division without growth produces cells called blastomeres.

38. In both sea urchins and frogs first two cleavages are vertical.
The third division is horizontal.
The result is an eight-celled embryo with two tiers of four cells.

39. Continued cleavage produces the morula.

40. A blastocoel forms within the morula  blastula
View the sea urchin development video on the CD

41. Gastrulation rearranges the blastula to form a three-layered embryo with a primitive gut
Development after fertilization video

42. (triploblastic)

43. Organogenesis forms the organs from the three embryonic germ layers
Organogenesis in a frog embryo
View frog development video on CD

44. Amniote embryos develop in a fluid-filled sac within a shell or uterus
The amniote embryo is an adaptation for reproduction in the terrestrial environment.
Shelled eggs of reptiles and birds.
Uterus of placental mammals.

45. Extraembryonic membranes in a chick
Identify the membranes that provide supporting functions
Protection from mechanical shock
Gas exchange
Disposal of uric acid
Nutrient source

46. Extraembryonic membranes in a chick
How extraembryonic membranes support chick video

47. The four extraembryonic membranes are the yolk sac, amnion, chorion, and allantois.
Cells of the yolk sac digest yolk providing nutrients to the embryo.
The amnion encloses the embryo in a fluid-filled amniotic sac which protects the embryo from drying out.
The chorion cushions the embryo against mechanical shocks.
The allantois functions as a disposal sac for uric acid.

48. Most major organs have formed
Chick embryo 54 hours old
Most major organs have formed
Formation of structures in embryo video

49. Early development of a human embryo and its extraembryonic membranes

50. Embryonic membranes – homologous with those of shelled eggs.
Chorion: completely surrounds the embryo and other embryonic membranes.
Amnion: encloses the embryo in a fluid-filled amniotic cavity.
Yolk sac: found below the developing embryo.
Develops from the hypoblast.
Site of early formation of blood cells which later migrate to the embryo.
Allantois: develops as an outpocketing of the embryo’s rudimentary gut.
Incorporated into the umbilical cord, where it forms blood vessels.
Organogenesis begins with the formation of the neural tube, notochord, and somites.

51. Embryonic membranes – homologous with those of shelled eggs.
Impact of Drugs and Chemicals on Fetal Development video

52. During labor, hormones stimulate the uterus to contract
During labor, hormones stimulate the uterus to contract. The contractions push the baby out of the mother's body.

53. The Process of Birth