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Anatomy 2 > Anterior Triangle of the Neck > Flashcards

Anterior Triangle of the Neck Flashcards

1
Q

What are the 4 attachments of investing fascia of the anterior triangle of the neck?

A
  1. Mandible
  2. Mastoid process
  3. Superior nuchal line
  4. Sternum and clavicle
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2
Q

What 2 glands does the deep cervical fascia of the anterior triangle of the neck enclose?

A
  1. Parotid salivary

2. Submandibular salivary

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3
Q

What 2 muscles does the deep cervical fascia of the anterior triangle of the neck enclose?

A
  1. Sternocleidomastoid

2. Trapezius

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4
Q

What 2 things does the sling formed by the deep fascia of the anterior triangle of the neck enclose?

A
  1. Intermediate tendon of omohyoid to clavicle

2. Intermediate tendon of digastric to hyoid

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5
Q

What are the 4 types of deep cervical fascia of the anterior triangle of the neck?

A
  1. Investing fascia
  2. Pretracheal
  3. Prevertebral
  4. Carotid sheath
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6
Q

What 3 things can be found in the pretracheal fascia?

A
  1. Trachea
  2. Oesophagus
  3. Thyroid gland
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7
Q

What 4 things can be found in the carotid sheath?

A
  1. Internal jugular vein
  2. Common carotid artery
  3. Internal carotid artery
  4. Vagus nerve
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8
Q

What is the origin of the sternocleidomastoid?

A
  1. Sternal head

2. Clavicular head

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9
Q

What is the insertion of the sternocleidomastoid?

A

Mastoid process and lateral half of the superior nuchal line

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10
Q

What is the nerve supply of the sternocleidomastoid?

A

Spinal part of accessory

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11
Q

What are the 2 unilateral actions of the sternocleidomastoid?

A
  1. Tilting head to the same side

2. Rotating the face to the opposite side

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12
Q

What is the bilateral action of the sternocleidomastoid?

A

Flexion of the neck

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13
Q

What are the boundaries of the anterior triangle of the neck?

A
  1. Middle line of the neck (anterior)
  2. Anterior boarder of sternocleidomastoid (posterior)
  3. Base of the mandible (superior)
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14
Q

What are the 4 triangles found within the anterior triangle of the neck?

A
  1. Carotid
  2. Digastric / Submandibular
  3. Submental
  4. Muscular
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15
Q

What are the 3 boundaries of the submental triangle?

A
  1. Anterior belly digastric (right)
  2. Midline of neck (left)
  3. Hyoid bone (inferior)
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16
Q

What forms the floor of the submental triangle?

A

Mylohyoid muscle

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17
Q

What are the 2 major contents of the submental triangle?

A
  1. Submental lymph node

2. Submental artery and vein

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18
Q

What are the 3 boundaries of the digastric triangle?

A
  1. Anterior belly digastric
  2. Posterior belly digastric
  3. Base of mandible
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19
Q

What 2 things form the floor of the digastric triangle?

A
  1. Mylohyoid muscle (anterior)

2. Hypoglossus muscle (posterior)

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20
Q

What are the 5 major contents of the anterior part of the digastric triangle?

A
  1. Submandibular gland
  2. Submandibular lymph node
  3. Facial vessels
  4. Hypoglossal nerve
  5. Nerve to mylohyoid
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21
Q

What are the 4 major components of the posterior part of the digastric triangle?

A
  1. Internal carotid artery
  2. External carotid artery
  3. Internal jugular vein
  4. Vagus nerve
22
Q

What 3 things separate the internal carotid and external carotid arteries?

A
  1. Stylopharyngeus muscle
  2. Styloglossus muscle
  3. Glossopharyngeal nerve
23
Q

What are the 3 boundaries of the carotid triangle?

A
  1. Anterior boarder of sternocleidomastoid
  2. Posterior belly of digastric
  3. Superior belly of omohyoid
24
Q

What 2 things form the anterior part of the floor of the carotid triangle?

A
  1. Hypoglossus muscle

2. Thyrohyoid muscle

25
Q

What forms the posterior part of the floor of the carotid triangle?

A
  1. Pharyngeal muscles
26
Q

What are the 5 major vessels found in the carotid triangle?

A
  1. Common carotid artery
  2. Internal carotid artery
  3. External carotid artery
  4. Internal jugular vein
  5. Some branches of external carotid artery
27
Q

What are the 5 major nerves found in the carotid triangle?

A
  1. CN X
  2. CN XI
  3. CN XII
  4. Ansa cervicalis
  5. Sympathetic trunk
28
Q

Describe the location of the ansa cervicalis within the carotid triangle

A

Outer surface of carotid sheath

29
Q

Describe the location of the sympathetic trunk within the carotid triangle

A

Lies behind the carotid sheath

30
Q

What 3 things form the ansa cervicalis?

A
  1. Descendens hypoglossi of C1
  2. Root from ventral ramus of C2
  3. Root from ventral ramus of C3
31
Q

What are the boundaries of the muscular triangle of the anterior triangle of the neck?

A
  1. Anterior boarder of sternocleidomastoid
  2. Superior belly of omohyoid muscle
  3. Midline of the front of the neck
32
Q

What are the 2 major components of the muscular triangle of the anterior triangle of the neck?

A
  1. Thyroid gland

2. Infrahyoid muscles

33
Q

What are the 4 major infrahyoid muscles?

A
  1. Sternohyoid
  2. Sternothyroid
  3. Thyrohyoid
  4. Superior belly of omohyoid
34
Q

What nerve supplies the infrahyoid muscles?

A

Ansa cervicalis except thyrohyoid

35
Q

What is the nerve supply of the thyrohyoid?

A

Fibres from first cervical spinal nerve travelling with hypoglossal nerve

36
Q

What is the origin of the sternohyoid?

A

Back of manubrium of sternum

37
Q

What is the insertion of the sternohyoid?

A

Hyoid bone

38
Q

What is the function of the sternohyoid?

A

Depression of hyoid bone

39
Q

What is the origin of the sternothyroid?

A

Back of manubrium of sternum

40
Q

What is the insertion of the sternothyroid?

A

Oblique line of thyroid cartilage

41
Q

What is the function of the sternothyroid?

A

Depression of the larynx

42
Q

What is the origin of the thyrohyoid?

A

Oblique line of thyroid cartilage

43
Q

What is the insertion of the thyrohyoid?

A

Hyoid bone

44
Q

What is the function of the thyrohyoid?

A

Depression of the hyoid bone

45
Q

What are the 2 origins of the omohyoid?

A
  1. Inferior belly from upper boarder of scapula

2. Superior belly from hyoid bone

46
Q

What is the insertion of the omohyoid?

A

Intermediate tenodn

47
Q

What is the action of the omohyoid?

A

Depression of the hyoid bone

48
Q

What are the 5 suprahyoid muscles?

A
  1. Stylohyoid
  2. Posterior belly digastric
  3. Anterior belly digastric
  4. Mylohyoid
  5. Geniohyoid
49
Q

What is the nerve supply of the stylohyoid?

50
Q

What is the nerve supply of posterior belly digastric?

51
Q

What is the nerve supply of anterior belly digastric?

A

CN V and nerve to mylohyoid

52
Q

What is the nerve supply of the geniohyoid?

A

Spinal nerve C1

Anatomy 2 (24 decks)

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