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

10. Muscles

Muscle Naming

Anatomy & Physiology

10. Muscles

Muscle Naming

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1:50 minutes

Problem 7

Textbook Question

Muscles that depress the hyoid bone and larynx include all but the:
a. Sternohyoid
b. Omohyoid
c. Geniohyoid
d. Sternothyroid

Verified step by step guidance

Step 1: Understand the function of the muscles listed in the problem. The question asks about muscles that depress the hyoid bone and larynx, so focus on their anatomical roles.

Step 2: Review the anatomy and function of the sternohyoid muscle. It originates from the sternum and inserts on the hyoid bone, and its primary function is to depress the hyoid bone.

Step 3: Examine the omohyoid muscle. This muscle has two bellies connected by a tendon and also functions to depress the hyoid bone.

Step 4: Analyze the geniohyoid muscle. This muscle originates from the mandible and inserts on the hyoid bone, but its primary function is to elevate and pull the hyoid bone forward, not depress it.

Step 5: Review the sternothyroid muscle. It originates from the sternum and inserts on the thyroid cartilage, and its primary function is to depress the larynx and hyoid bone.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Hyoid Bone Anatomy

The hyoid bone is a U-shaped bone located in the neck, serving as an anchor for the tongue and supporting the larynx. It plays a crucial role in swallowing and speech. Understanding its position and function is essential for identifying the muscles that act upon it.

Muscles of the Neck

Several muscles in the neck are responsible for the movement of the hyoid bone and larynx. The sternohyoid, omohyoid, and sternothyroid are all involved in depressing these structures, while the geniohyoid primarily elevates the hyoid bone. Recognizing these muscle functions is key to answering the question.

Muscle Actions

Muscle actions can be categorized as either agonist or antagonist movements. In this context, the muscles that depress the hyoid and larynx are considered agonists for that action. Understanding the specific roles of each muscle helps in determining which one does not fit the criteria of depressing the hyoid and larynx.

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