1. B. Carotid triangle: Superiorly: Posterior belly of digastric
Anteroinferiorly:
Superior belly of the omohyoid
Posteriorly:
Sternomastoid

2. Roof:
Skin, Superficial fascia
and investing layer of deep cervical fascia

3. Floor:
Thyrohyoid muscle
Hyoglossus
Middle constrictor &
Inferior constrictor of pharynx

4. Contents of Carotid triangle:
Arteries:
Common carotid artery
Internal carotid artery
External carotid artery

6. Contents of Carotid triangle:
Veins:
Internal jugular vein
Common facial vein
Pharyngeal vein
Lingual vein

7. Contents of Carotid triangle:
Nerves:
Vagus
Spinal accessory nerve
Hypoglossal nerve
Sympathetic chain
Carotid sheath and lymph nodes

8. D. Muscular triangle: Anterioly: Median line of neck Posterosuperioly:
Superior belly of the omohyoid
Posteroinferiorly:
Sternomastoid muscle

9. Infrahyoid muscles are chief contents of
Contents of Muscular triangle:
Infrahyoid muscles are chief contents of
muscular triangle

10. The Scalp

11. THE SCALP:
The soft tissue covering the cranial vault is called as scalp
Extent:
Anteriorly:
Supraorbital margins
Posteriorly:
External occipital protuberance
On each side:
Superior temporal lines

12. Scalp consists of five layers:
Skin
Close network of subcutaneous tissue
Aponeurosis ( galea aponeurotica with
epicranius muscle)
Loose subaponeurotic tissue
Pericranium

13. 1. Skin:
It is provided with numerous hair and sebaceous and sweat glands
skin
Subcutaneous tissue
Galea aponeurotica
Loose subaponeurotic tissue
Pericranium

14. 2. Close network of subcutaneous tissue:
It consists of close network of subcutaneous tissue which connects the skin with underlying galea aponeurotica and epicranius muscles
skin
Subcutaneous tissue
Galea aponeurotica
Loose subaponeurotic tissue
Pericranium

15. 3. Epicranius muscle and its aponeurosis:
The Epicranius includes:
Occipito-frontalis muscle which consists of
Occipital belly behind
Frontal belly in front

17. Galea aponeurotica:
It is a fibrous sheet which connects occipitalis and frontalis muscle

18. 4. Loose subaponeurotic tissue: (Dangerous area of scalp)
It lies beneath the epicranius muscle and presents a potential space containing emissary veins
skin
Subcutaneous tissue
Galea aponeurotica
Loose subaponeurotic tissue
Pericranium

19. 5. Pericranium: It is outer periosteum of the skull skin
Subcutaneous tissue
Galea aponeurotica
Loose subaponeurotic tissue
Pericranium

20. Nerve supply: Ten nerves supply the scalp on each side
Five in front of the auricle -
Four are sensory and one is motor
Five behind the auricle –

21. Nerves in front of auricle:
Supra-trochlear (S)
Supra-orbital (S)
Zygomatico-temporal (S)
Temporal branch of facial nerve (M)
Auriculo-temporal nerve (S)

22. Nerves behind the auricle:
Posterior branch of great auricular nerve(S)
Posterior auricular branch of facial nerve (M)
Lesser occipital nerve (S)
Greater occipital nerve (S)
Third occipital nerve (S)

23. Arterial supply: Five sets of arteries supply the scalp on each side
Three in front of the auricle
Two behind the auricle

24. Arteries in front of the auricle:
Supra-trochlear
Supra-orbital
Ophthalmic artery
Superficial temporal
External carotid artery

25. Arteries behind the auricle:
Posterior auricular
Occipital artery
External carotid artery

26. Venous Drainage: Supra-trochlear Supra-orbital Superficial temporal
Posterior auricular
Occipital vein

28. Emissary veins: On each side two sets of emissary veins Parietal -
Superior sagittal sinus
Mastoid–
Sigmoid sinus
Emissary vein
Sigmoid sinus

30. Diploic veins: Frontal diploic vein- Supra-orbital vein
Occipital diploic vein–
Occipital vein
Diploic veins

31. Lymphatic drainage: Anterior part of scalp- Pre-auricular
Posterior part of scalp–
Post-auricular

32. FACIAL MUSCLES

33. Occipitofrontalis muscle
Topographically, the muscles are grouped as:
1. Muscle of scalp:
Identify the muscle?
Occipitofrontalis muscle

34. 3. Auricularis posterior
2. Muscles of the auricle:
2. Auricularis superior
Identify the muscles? 3 1 2
3. Auricularis posterior
1. Auricularis anterior

35. 2. Corrugator supercilli
2. Muscles of the eyelids:
2. Corrugator supercilli 2 1
1. Orbucularis oculi
Identify the muscles?

36. 1 2 3 4 4. Muscles of the nose: 4. Depressor septi 1. Procerus
2.Compressor naris 2 3
3. Dilator naris 4

37. 3. Levator labii superioris alaequae nasi 4. Levator labii superioris
5. Muscles around the mouth: 2
3. Levator labii superioris alaequae nasi 3
2. Levator anguli oris 4 1
4. Levator labii superioris
1. Orbicularis oris

38. 5 6 7 5. Muscles around the mouth: 5. Zygomaticus minor
6. Zygomaticus major 6 7
7. Risorius

39. 10. Depressor labii angularis 9. Depressor labii inferioris
5. Muscles around the mouth:
10. Depressor labii angularis 10 9 8
9. Depressor labii inferioris
8. Mentalis

40. 6. Muscle of the neck:
Platysma 1

41. Thank you