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

Introduction to Directional Terms

Anatomy & Physiology

1. Introduction to Anatomy & Physiology

Introduction to Directional Terms

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Multiple Choice

In order to drink through a straw, which prime mover facial muscle must be used?

Masseter

Temporalis

Orbicularis oculi

Buccinator

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Verified step by step guidance

Step 1: Understand the function of the Buccinator muscle. The Buccinator is a facial muscle located in the cheek area. Its primary role is to compress the cheek, which is essential for actions like blowing air, sucking, or drinking through a straw.

Step 2: Compare the Buccinator's function to the other muscles listed. The Masseter and Temporalis are involved in chewing and closing the jaw, while the Orbicularis oculi is responsible for closing the eyelids. None of these muscles contribute to the action of drinking through a straw.

Step 3: Recognize that drinking through a straw requires creating suction by compressing the cheeks and controlling airflow, which is specifically facilitated by the Buccinator muscle.

Step 4: Recall that the Buccinator works in coordination with other muscles, such as the Orbicularis oris (around the mouth), to create the necessary pressure for sucking through a straw.

Step 5: Conclude that the Buccinator is the prime mover for this action, as it is directly responsible for compressing the cheeks and enabling suction.