Table of contents

1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 36m
3. Energy & Cell Processes10h 6m
4. Tissues & Histology10h 3m
5. Integumentary System2h 20m
6. Bones & Skeletal Tissue2h 16m
7. The Skeletal System2h 35m
8. Joints2h 17m
9. Muscle Tissue2h 33m
10. Muscles1h 11m
11. Nervous Tissue and Nervous System1h 35m
12. The Central Nervous System1h 6m
- Introduction to the Central Nervous System
  18m
- The Cerebrum
  48m
13. The Peripheral Nervous System1h 26m
14. The Autonomic Nervous System1h 38m
15. The Special Senses2h 41m
16. The Endocrine System2h 48m
17. The Blood3h 22m
18. The Heart3h 42m
19. The Blood Vessels3h 35m
20. The Lymphatic System3h 16m
21. The Immune System14h 37m
22. The Respiratory System3h 20m
23. The Digestive System2h 5m
24. Metabolism and Nutrition4h 0m
25. The Urinary System2h 39m
26. Fluid and Electrolyte Balance, Acid Base Balance37m
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity3h 32m

28. Human Development

Introduction to Human Development

Anatomy & Physiology

28. Human Development

Introduction to Human Development

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Multiple Choice

Which procedure involves withdrawing amniotic fluid between the 15th and 18th weeks of pregnancy?

Amniocentesis

Chorionic villus sampling

Ultrasound

Fetoscopy

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Verified step by step guidance

Understand the purpose of the procedure: The procedure in question is used to withdraw amniotic fluid for testing. This fluid contains fetal cells and various chemicals produced by the baby, which can be analyzed for genetic disorders and other conditions.

Identify the timing of the procedure: The procedure is typically performed between the 15th and 18th weeks of pregnancy. This timing is crucial for obtaining accurate results while minimizing risks to the mother and fetus.

Differentiate between procedures: Amniocentesis involves withdrawing amniotic fluid using a needle inserted through the mother's abdomen. Chorionic villus sampling, on the other hand, involves taking a sample of placental tissue and is usually performed earlier in pregnancy. Ultrasound is a non-invasive imaging technique, and fetoscopy involves direct visualization of the fetus using an endoscope.

Recognize the procedure's name: The procedure that involves withdrawing amniotic fluid is called amniocentesis. This is distinct from other procedures like chorionic villus sampling, which involves placental tissue, and ultrasound, which is purely imaging.

Consider the risks and benefits: Amniocentesis carries some risks, such as miscarriage, but provides valuable information about the genetic health of the fetus. Understanding these factors can help in making informed decisions about prenatal testing.