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

4. Tissues & Histology

Introduction to Muscle Tissue

Anatomy & Physiology

4. Tissues & Histology

Introduction to Muscle Tissue

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Multiple Choice

Which muscles are typically underactive in association with lower crossed syndrome?

Gluteus maximus and abdominals

Hamstrings and gastrocnemius

Quadriceps and pectoralis major

Erector spinae and hip flexors

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Verified step by step guidance

Step 1: Understand the concept of lower crossed syndrome. It is a postural imbalance characterized by tightness in certain muscle groups (hip flexors and lumbar extensors) and weakness in others (abdominals and gluteus maximus). This imbalance affects posture and movement patterns.

Step 2: Identify the muscles that are typically overactive in lower crossed syndrome. These include the hip flexors (e.g., iliopsoas) and lumbar extensors (e.g., erector spinae). Overactivity in these muscles contributes to the anterior pelvic tilt and increased lumbar lordosis seen in this condition.

Step 3: Recognize the muscles that are typically underactive in lower crossed syndrome. These include the gluteus maximus and abdominals. Weakness in these muscles leads to reduced stabilization of the pelvis and spine, exacerbating the postural imbalance.

Step 4: Eliminate incorrect options based on the understanding of muscle involvement. For example, hamstrings and gastrocnemius are not typically underactive in lower crossed syndrome, nor are quadriceps and pectoralis major. Erector spinae and hip flexors are overactive, not underactive.

Step 5: Conclude that the correct answer is gluteus maximus and abdominals, as these are the muscles typically underactive in association with lower crossed syndrome.