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511 > Anterior Neck > Flashcards

Anterior Neck Flashcards

1
Q

Platysma OIA

A

Origin: infra and supraclavicular regions

Insertion: base of mandible; spine of cheek and angle of mouth

Innervation: facial nerve

Action: depression of angles of mouth and mandible (“frightened face”)

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2
Q

Triangles of the neck anterior and posterior boundaries

A

Anterior: anterior border of sternocleidomastoid, inferior border of the mandible

Posterior: posterior border of the SCM, anterior border of the trapezius and middle one-third of clavicle

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3
Q

4 smaller triangles of anterior triangle

A

Submandibular, submental, muscular, and carotid

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4
Q

Submandibular outlines and major contents

A

Inferior border of the mandible and digastric m.

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5
Q

Submental triangle outlines and major contents

A

Hyoid bone and anterior belly of digastric m

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6
Q

Muscular triangle outlines and major contents

A

Hyoid bone, superior belly of omohyoid m., and anterior border of the SCM m

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7
Q

Carotid triangle outlines and contents

A

Superior belly of omohyoid m, stylohyoid m, posterior belly of digastric m, and anterior border of SCM m

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8
Q

Submandibular triangle major contents

A

Facial a & v, submandibular gland, hypoglossal n (CN12)

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9
Q

Submental triangle major content

A

Submental lymph nodes

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10
Q

Carotid triangle major content

A

Int. Jugular v, carotid a, vagus n (CN 10), ansa cervicalis

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11
Q

Muscular triangle major contents

A

Thyroid and parathyroid glands

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12
Q

Suprahyoid muscles

A

Stylohyoid, digastric, mylohyoid, geniohyoid

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13
Q

Infrahyoid muscles

A

Sternohyoid, omohyoid, thyrohyoid, sternothyroid

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14
Q

Stylohyoid OIIA

A

Origin: base of styloid process

Insertion: greater horns

Innervation: facial nerve (CN 07)

Main action: pulls the hyoid bone posterosuperiorly during swallowing

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15
Q

Digastric OIIA

A

Origin: anterior - digastric fossa, posterior - mastoid process

Insertion: tendon between 2 bellies to body of hyoid bone

Innervation: mylohyoid nerve

Main action: elevates the hyoid bone and depresses the mandible

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16
Q

Mylohyoid OIIA

A

Origin: mylohyoid line of mandible

Insertion: body of hyoid bone

Innervation: mylohyoid nerve

Main action: support and elevation of floor of mouth; elevation of hyoid

17
Q

Geniohyoid OIIA

A

Origin: inferior mental spine

Insertion: body of hyoid bone

Innervation: anterior ramus from C1

Main action: fixation of mandible; pulls mandible inward

18
Q

Sternohyoid OIIA

A

Origin: posterior aspect of sternoclavicular joint

Insertion: body of hyoid bone

Innervation: ansa cervicalis

Main action: depresses hyoid bone after swallowing

19
Q

Omohyoid OIIA

A

Origin: superior border of scapula

Insertion: body of hyoid bone

Innervation: anterior rami of C1 to C3

Main action: depresses hyoid bone

20
Q

Thyrohyoid OIIA

A

Origin: thyroid cartilage

Insertion: greater horn of hyoid bone

Innervation: anterior ramus of C1

Main action: depresses the hyoid bone and elevates thyroid cartilage

21
Q

Sternothyroid OIIA

A

Origin: manubrium

Insertion: thyroid cartilage

Innervation: ansa cervicales

Main action: draws larynx (thyroid cartilage) downward

22
Q

What does the internal carotid artery supply blood to?

A

everything in the skull; ex. brain

23
Q

What does the external carotid artery supply blood to?

A

everything outside the skull

24
Q

What veins receive blood from all structures of the head and neck?

A

internal jugular veins

25
Q

What arteries come from the brachiocephalic trunk?

A

Right common carotid and right subclavian artery

26
Q

What structure does the right internal jugular vein come from?

A

brachiocephalic trunk

27
Q

What vessels come from the aortic arch?

A

left common carotid artery and subclavian

28
Q

Which nerves pass through the jugular foramen?

A

Glossopharyngeal (CN 09)
Vagus nerve (CN 10)
Accessory nerve (CN 11)

29
Q

Which nerve passes through the hypoglossal canal?

A

Hypoglossal (CN 12)

30
Q

What type of nerve is glossopharyngeal? Function?

A

mixed nerve (motor and sensory); innervates muscle of pharyngeal wall

31
Q

What type of nerve is vagus nerve? Function?

A

mixed nerve (motor and sensory); innervates larynx, lungs, heart, liver, and structures in abdomen

32
Q

What type of nerve is accessory nerve? Function?

A

motor nerve; innervates SCM and trap

33
Q

What type of nerve is hypoglossal nerve? Function?

A

motor nerve; innervates the tongue

511 (17 decks)

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