Solved Anterior muscular system worksheet On the anterior | Chegg.com - Free Printable

Since I can't view or access images directly, I can’t see the specific labels or image you’ve uploaded. However, I can help you identify and label the anterior muscular system based on standard anatomical knowledge.

Below is a comprehensive guide to labeling the superficial (right side) and deeper (left side) muscles of the anterior (front) view of the human body as typically shown in an anterior muscular system worksheet.

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🔹 Anterior Muscular System – Labeling Guide

#### Right Side: Superficial Muscles (Visible/Outer Layer)

1. Frontalis – forehead muscle
2. Orbicularis oculi – around the eye
3. Orbicularis oris – around the mouth
4. Masseter – jaw muscle (lateral)
5. Pectoralis major – chest
6. Deltoid – shoulder
7. Biceps brachii – upper arm
8. Brachialis – under biceps
9. Flexor carpi radialis – forearm (wrist flexor)
10. Palmaris longus – forearm (palmar side)
11. Adductor longus – inner thigh
12. Gracilis – inner thigh
13. Vastus medialis – inner thigh (part of quadriceps)
14. Rectus femoris – front of thigh (quadriceps)
15. Vastus lateralis – outer thigh (quadriceps)
16. Tibialis anterior – front of shin
17. Extensor digitorum longus – top of foot
18. Peroneus longus – lateral leg
19. Gastrocnemius – calf (superficial posterior)

> ✔ These are the superficial muscles visible on the right side of the diagram.

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#### Left Side: Deeper Muscles (Underlying Layer)

20. Occipitofrontalis (frontal belly) – deeper forehead
21. Corrugator supercilii – between eyebrows
22. Zygomaticus major – from cheek to corner of mouth
23. Depressor anguli oris – pulls down mouth corner
24. Sternocleidomastoid – neck (deep layer)
25. Pectoralis minor – deep to pectoralis major
26. Subscapularis – deep back of shoulder (but visible anteriorly in some views)
27. External oblique – abdominal wall
28. Internal oblique – beneath external oblique
29. Transversus abdominis – deepest abdominal layer
30. Rectus abdominis – "six-pack" muscle
31. Iliopsoas (iliacus + psoas major) – hip flexor
32. Adductor magnus – deep inner thigh
33. Gluteus minimus – deep gluteal region (though not anterior)
34. Adductor brevis – deep inner thigh
35. Pectineus – near hip
36. Adductor longus – may be labeled again if deep layer shown
37. Vastus intermedius – deep within quadriceps
38. Popliteus – behind knee (deep)
39. Tibialis posterior – deep posterior leg
40. Flexor digitorum longus – deep calf
41. Flexor hallucis longus – deep leg, plantar flexes big toe

> ⚠️ Note: Some muscles like tibialis posterior, flexor digitorum longus, and popliteus are posterior, but may appear in anterior diagrams due to cross-sectional views.

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📌 Key Notes:

- Superficial = outermost muscles (visible)
- Deep = underneath superficial muscles
- The rectus abdominis (30) and internal obliques (28) are often shown in deeper layers.
- The psoas major (part of iliopsoas) is deep and runs from spine to femur.
- In anterior views, some deep muscles like adductor brevis and pectineus are located in the medial thigh.

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✔ How to Use This Guide:

1. Match each number on your worksheet with the correct muscle name above.
2. On the right side, label superficial muscles (e.g., pectoralis major, rectus femoris).
3. On the left side, label deeper muscles (e.g., pectoralis minor, internal oblique, adductor brevis).

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If you provide a list of numbers and what you think they are, I can verify them! Or describe any part that's confusing.