Table of contents

1. Introduction to Biology2h 42m
2. Chemistry3h 37m
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 6m
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

40. Circulatory System

Gas Exchange

General Biology

40. Circulatory System

Gas Exchange

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Multiple Choice

How do the respiratory and circulatory systems work together to facilitate gas exchange in the human body?

The respiratory system removes carbon dioxide from tissues directly, while the circulatory system only transports nutrients.

Both systems independently supply oxygen to tissues without interacting with each other.

The circulatory system produces oxygen, which is then delivered to the lungs by the respiratory system for distribution throughout the body.

The respiratory system brings oxygen into the lungs, where it diffuses into the blood, and the circulatory system transports this oxygen to tissues while carrying carbon dioxide back to the lungs for exhalation.

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Verified step by step guidance

Understand the role of the respiratory system: The respiratory system is responsible for bringing oxygen into the body through inhalation and removing carbon dioxide through exhalation. Oxygen enters the lungs and diffuses into the bloodstream, while carbon dioxide diffuses out of the bloodstream into the lungs.

Understand the role of the circulatory system: The circulatory system transports oxygen-rich blood from the lungs to tissues throughout the body. It also carries carbon dioxide, a waste product of cellular respiration, from the tissues back to the lungs for removal.

Learn how gas exchange occurs: Gas exchange happens in the alveoli of the lungs, where oxygen diffuses from the air into the blood and carbon dioxide diffuses from the blood into the air. This process is driven by differences in partial pressures of gases.

Recognize the interaction between the systems: The respiratory and circulatory systems work together seamlessly. The respiratory system provides oxygen to the blood, and the circulatory system delivers this oxygen to tissues while returning carbon dioxide to the lungs for exhalation.

Apply the concept to the correct answer: The respiratory system brings oxygen into the lungs, where it diffuses into the blood. The circulatory system then transports this oxygen to tissues while carrying carbon dioxide back to the lungs for exhalation, demonstrating the cooperative function of both systems.