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

Anatomical Terms for the Head and Neck

Anatomy & Physiology

1. Introduction to Anatomy & Physiology

Anatomical Terms for the Head and Neck

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Multiple Choice

Which of the following plexuses is formed by the ventral rami of spinal nerves C1 to C4 and supplies the muscles and skin of the neck and part of the head?

Sacral plexus

Lumbar plexus

Cervical plexus

Brachial plexus

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Verified step by step guidance

Understand the concept of a nerve plexus: A nerve plexus is a network of intersecting nerves formed by the ventral rami of spinal nerves. These plexuses serve specific regions of the body by providing motor and sensory innervation.

Identify the spinal nerve roots involved: The problem specifies spinal nerves C1 to C4. These are cervical spinal nerves located in the neck region.

Learn the function of the cervical plexus: The cervical plexus is formed by the ventral rami of spinal nerves C1 to C4. It supplies motor and sensory innervation to the muscles and skin of the neck, as well as parts of the head, including the ear and shoulder region.

Compare the other plexuses mentioned: The sacral plexus (L4-S4) supplies the lower limbs, the lumbar plexus (L1-L4) supplies the lower back and thighs, and the brachial plexus (C5-T1) supplies the upper limbs. None of these are formed by C1 to C4 or supply the neck and head.

Conclude that the cervical plexus is the correct answer based on its spinal nerve roots (C1-C4) and its function of supplying the neck and part of the head.