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

1. Introduction to Anatomy & Physiology

Directional Terms: Up and Down

Anatomy & Physiology

1. Introduction to Anatomy & Physiology

Directional Terms: Up and Down

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Multiple Choice

Which of the following correctly describes the difference between dorsal and ventral rami of spinal nerves?

Dorsal rami form major nerve plexuses, while ventral rami do not.

Dorsal rami carry only sensory information, while ventral rami carry only motor information.

Dorsal rami innervate the muscles and skin of the back, while ventral rami innervate the limbs and anterior trunk.

Dorsal rami are found only in the cervical region, while ventral rami are found throughout the spinal cord.

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Verified step by step guidance

Understand the anatomy of spinal nerves: Spinal nerves are mixed nerves that carry both sensory and motor information. They split into dorsal and ventral rami after exiting the spinal cord.

Clarify the function of dorsal rami: Dorsal rami are responsible for innervating the muscles and skin of the back. They do not form major nerve plexuses and are found throughout the spinal cord, not limited to the cervical region.

Clarify the function of ventral rami: Ventral rami innervate the limbs and anterior trunk. They are larger than dorsal rami and form major nerve plexuses such as the cervical, brachial, lumbar, and sacral plexuses.

Eliminate incorrect options: Review each option provided in the problem and compare it to the anatomical functions of dorsal and ventral rami. For example, dorsal rami do not form major nerve plexuses, and they carry both sensory and motor information, not just sensory.

Select the correct answer: Based on the anatomical functions, the correct description is that dorsal rami innervate the muscles and skin of the back, while ventral rami innervate the limbs and anterior trunk.