Table of contents

1. Introduction to Biology2h 42m
2. Chemistry3h 40m
3. Water1h 26m
4. Biomolecules2h 23m
5. Cell Components2h 26m
6. The Membrane2h 31m
7. Energy and Metabolism2h 0m
8. Respiration2h 40m
9. Photosynthesis2h 49m
10. Cell Signaling59m
11. Cell Division2h 47m
12. Meiosis2h 0m
13. Mendelian Genetics4h 44m
14. DNA Synthesis2h 27m
15. Gene Expression3h 12m
16. Regulation of Expression3h 31m
17. Viruses37m
- Viruses
  37m
18. Biotechnology2h 58m
19. Genomics17m
- Genomes
  17m
20. Development1h 5m
21. Evolution3h 1m
22. Evolution of Populations3h 53m
23. Speciation1h 37m
24. History of Life on Earth2h 6m
25. Phylogeny2h 31m
26. Prokaryotes4h 59m
27. Protists1h 12m
28. Plants1h 22m
29. Fungi36m
- Fungi
  19m
- Fungi Reproduction
  17m
30. Overview of Animals34m
- Overview of Animals
  34m
31. Invertebrates1h 2m
32. Vertebrates50m
33. Plant Anatomy1h 3m
34. Vascular Plant Transport1h 2m
- Water Potential
  1h 2m
35. Soil37m
- Soil and Nutrients
  20m
- Nitrogen Fixation
  16m
36. Plant Reproduction47m
- Flowers
  33m
- Seeds
  14m
37. Plant Sensation and Response1h 9m
38. Animal Form and Function1h 19m
39. Digestive System1h 10m
- Digestion
  1h 3m
- Blood Sugar Homeostasis
  7m
40. Circulatory System1h 49m
41. Immune System1h 12m
42. Osmoregulation and Excretion50m
- Osmoregulation and Excretion
  50m
43. Endocrine System1h 4m
- Endocrine System
  1h 4m
44. Animal Reproduction1h 2m
- Animal Reproduction
  1h 2m
45. Nervous System1h 55m
- Neurons and Action Potentials
  1h 8m
- Central and Peripheral Nervous System
  46m
46. Sensory Systems46m
- Sensory System
  46m
47. Muscle Systems23m
- Musculoskeletal System
  23m
48. Ecology3h 11m
49. Animal Behavior28m
- Animal Behavior
  28m
50. Population Ecology3h 41m
51. Community Ecology2h 46m
52. Ecosystems2h 36m
53. Conservation Biology24m
- Conservation Biology
  24m

11. Cell Division

Introduction to Cell Division

General Biology

11. Cell Division

Introduction to Cell Division

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Multiple Choice

Which of the following will occur after ovulation in the human female reproductive cycle?

The primary oocyte completes meiosis II.

The endometrial lining is shed immediately.

Estrogen levels reach their lowest point.

The corpus luteum forms and secretes progesterone.

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Verified step by step guidance

Understand the process of ovulation: Ovulation is the release of a mature egg (secondary oocyte) from the ovary. This occurs approximately midway through the menstrual cycle, typically around day 14 in a 28-day cycle.

Recognize the role of the corpus luteum: After ovulation, the ruptured follicle in the ovary transforms into the corpus luteum, a temporary endocrine structure. Its primary function is to secrete hormones, particularly progesterone, to prepare the uterus for potential implantation of a fertilized egg.

Clarify the role of progesterone: Progesterone helps maintain the endometrial lining of the uterus, making it suitable for implantation. It also inhibits further ovulation during the cycle by suppressing the release of gonadotropins (FSH and LH).

Eliminate incorrect options: The primary oocyte completes meiosis II only if fertilization occurs. The endometrial lining is not shed immediately after ovulation; it is maintained by progesterone. Estrogen levels do not reach their lowest point after ovulation; they decrease slightly but remain relatively high compared to the follicular phase.

Conclude with the correct answer: The corpus luteum forms after ovulation and secretes progesterone to support the uterine lining and regulate the reproductive cycle.