1. درس امروز بررسی عضلات ناحیه سوپرا و اینفراهایوئید
بررسی عضلات دهنده چهره
بررسی اسکالپ

2. Neck triangles

3. Infrahyoid & Suprahyoid regions

4. Infrahyoid muscles Thyroid Omo-hyoid Sterno-hyoid Strno-thyroid
Thyro-hyoid
ORIGIN Scapula, Sternum
INSERTION Thyroid cartilage, Hyoid bone
ACTION Depresses thyroid cartilage and hyoid bone
NERVE Ansa cervicalis nerve (C1,2,3)

5. Omo-hyoid
Sterno-hyoid
Strno-thyroid
Thyro-hyoid
ORIGIN: Scapula, Sternum
INSERTION: Thyroid cartilage, Hyoid bone
ACTION: Depresses thyroid cartilage and hyoid bone
NERVE: Ansa cervicalis nerve (C1,2,3)

6. Suprahyoid muscles
Digastric
Stylo-hyoid
Mylo-hyoid
Geni-ohyoid

7. Digastric ORIGIN Anterior belly: mental, posterior belly : mastoid
INSERTION Fibrous loop to hyoid bone
ACTION Elevates hyoid in swallowing
NERVE Anterior belly: mylohyoid nerve (V). posterior belly: facial nerve (VII)

8. Stylohyoid ORIGIN Styloid process INSERTION Hyoid bone
ACTION Elevates hyoid bone
NERVE Mandibular branch of facial nerve (VII)

9. Mylohyoid ORIGIN Mylohyoid line on mandible INSERTION Hyoid bone
ACTION Elevates hyoid bone. supports floor of mouth
NERVE Mylohyoid nerve (V)

10. Geniohyoid ORIGIN Mental spine in mandible INSERTION Hyoid bone
ACTION Elevates hyoid bone. Depresses mandible
NERVE C1 fibers

11. Hyoglossus ORIGIN Hyoid bone INSERTION Tongue ACTION Depresses tongue
NERVE Hypoglossal nerve (XII)

12. Review Anterior

13. Neck triangles

14. Posterior triangles

15. Anterior triangles

22. S: The skin on the head from which head hair grows.
C: Connective tissue. A thin layer of fat.
A: The aponeurosis called epicranial aponeurosis (galea aponeurotica).
L: The loose connective tissue.
P: The pericranium is the periosteum of the skull bones.

23. SCALP

24. aponeurosis