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Gross Anatomy Unit 2 > Anterior Neck 6/15 > Flashcards

Anterior Neck 6/15 Flashcards

1
Q

Sternohyoid

A

Infrahyoid Muscle

Origin:
Manubrium of sternum and medial end of clavicle

Insertion:
Body of hyoid

Innervation:
C1 to C3 a branch of Ansa Cervicalis

Action:
Depresses hyoid after elevation during swallowing

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2
Q

Omohyoid

A

Infrahyoid Muscle

Origin:
Superior border of scapula near the suprascapular notch

Insertion:
Inferior border of hyoid bone

Innervation:
C1 to C3 a branch of Ansa Cervicalis

Action:
Depresses, retracts, and steadies hyoid

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3
Q

Sternothyroid

A

Infrahyoid Muscle

Origin:
Posterior surface of Manubrium of sternum

Insertion:
Oblique line of thyroid cartilage

Innervation:
C2 to C3 by a branch of Ansa Cervicalis

Action:
Depresses hyoid and larynx

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4
Q

Thyrohyoid

A

Infrahyoid Muscle

Origin:
Oblique line of thyroid cartilage

Insertion:
Inferior border of body and greater horn of hyoid

Innervation:
C1 via hypoglossal nerve (CN XII)

Action:
Depress the hyoid and elevate the larynx

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5
Q

Digastric

A

Suprahyoid Muscle

Origin:
Anterior belly - Digastric fossa of mandible
Posterior belly- Mastoid notch of temporal bone

Insertion:
Intermediate tendon to body and greater horn of hyoid.

Innervation:
Anterior belly- nerve to mylohyoid, a branch of inferior alveolar nerve
Posterior belly- digastric branch of facial nerve (CN VII)

Action:
Working with the infrahyoid muscles, it depresses mandible against resistance; elevates and steadies hyoid during swallowing and speaking.

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6
Q

Stylohyoid

A

Suprahyoid Muscle

Origin:
Styloid process of temporal bone

Insertion:
Body of hyoid

Innervation:
stylohyoid branch of facial nerve (CN VII)

Action:
Elevates and retracrs hyoid, thus elongating floor of mouth.

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7
Q

Geniohyoid

A

Suprahyoid muscle

Origin:
Inferior mental spine of mandible

Insertion:
Body of hyoid

Innervation:
C1 via hypoglossal nerve (CN XII)

Action:
Pulls hyoid anterosuperiorly; shortens floor of mouth, widens pharynx

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8
Q

Mylohyoid

A

Suprahyoid Muscle

Origin:
Mylohyoid line of mandible

Insertion:
Mylohyoid raphe and body of hyoid

Innervation:
Nerve to mylohyoid, a branch of inferior alveolar nerve (from mandibular nerve, CN V3)

Action:
Elevates hyoid, floor of mouth, and tongue during swallowing and speaking.

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9
Q

Ansa Cervicalis

A

Ventral Rami C1-C3 spinal nerves.

Superior root of Ansa Cervicalis branches off of Hypoglossal nerve (CN XII) to supply the Infrahyoid muscles.

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10
Q

CN XII - Hypoglossal Nerve

A

A somatic motor nerve to intrinsic and extrinsic muscles of the tongue.

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11
Q

CN X - Vagus Nerve

A

Supplies the palate, pharynx, laynx, heart, bronchi, lungs, esophagus, stomach, and intestinal tract, and as far as the left colic flexure.

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12
Q

Recurrent Laryngeal Nerve

A

Origin:
Vagus Nerve

Distribution:
Intrinsic muscles of larynx (except cricothyroid); sensory inferior to level of vocal folds

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13
Q

Phrenic Nerves

A

Origin:
Anterior Rami of C3-C5

Distribution:
Central portion of diaphragm

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14
Q

Inferior Cervical (Stellate) Sympathetic Ganglion

A

Star-Shaped ganglion lies anterior to the transverse process of the C7 vertebra, this is just superior to the neck of the 1st rib on each side and posterior to the origin of the vertebral artery.

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15
Q

Brachiocephalic Trunk

A

comes from Aortic Arch -

and supplies RIght Subclavian Artery and Right Common Carotid Artery.

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16
Q

Right Subclavian Artery

A

Comes off of Brachiocephalic trunk- supplies Right Upper Limb, Right internal thoracic artery, and Right Vertebral Artery, Right thyrocervical Trunk

17
Q

Left Subclavian Artery

A

Comes off of Aortic Arch - supplies Left Upper Limb, Left Internal thoracic artery, and Left vertebral artery, Left Thyrocervical Trunk

18
Q

Vertebral Artery

A

Comes off of Subclavian Artery (for left and right) and supplies the Basilar Artery, and Brain

19
Q

Internal Thoracic Artery

A

Comes off the Subclavian Artery - Supplies the Anterior thoracic and abdominal walls.

20
Q

Thyrocervical Trunk

A

Comes off the anterosuperal aspect of the Subclavian artery - branches into suprascapular artery and Transverse Cervical trunk (dorsal scapular)

21
Q

Transverse Cervical (Dorsal Scapular) Trunk

A

Comes off the thyrocervical trunk- branches into superficial cervical and dorsal scapular arteries

22
Q

Suprascapular Artery

A

Comes off the Thyrocervical Trunk - supply muscles on the posterior aspect of the scapula.

23
Q

Dorsal Scapular Artery

A

Comes off of the Transverse Cervical or comes straight off the subclavian artery- supplies levator scapulae and rhomboid muscles

24
Q

Internal Carotids

A

Comes off of Common Carotid Artery and enter cranium through the carotid canal and supply the Brain

25
Q

Right Common Carotid Artery

A

Comes off of Brachiocephalic artery- branches into Right External Carotid artery and Right Internal Carotid artery

26
Q

Left Common Carotid Artery

A

Comes off of Aortic Arch- branches into Left Internal Carotid artery and Left External Carotid artery

27
Q

External Carotids

A

Comes off the Common Carotid arteries- supply most structures external to the cranium

28
Q

Superior Thyroid Artery

A

Most inferior of the three anterior branches of the external carotid.

Supplies the thyroid gland, infrahoyid muscles, and SCM.

29
Q

Lingual Artery

A

Origin:
Anterior aspect of the external carotid artery

Distribution:
Supply posterior tongue, and then Bifurcates into the deep lingual and sublingual arteries.

30
Q

Facial Artery

A

Origin:
External Carotid Artery

Supplies:
Muscles of facial expression and face

31
Q

Occipital Artery

A

Origin:
External Carotid Artery

Supplies:
scalp of back of head, as far as vertex.

32
Q

Angular Artery

A

Origin:
Terminal branch of facial artery

Supplies:
Superior part of cheek and inferior eyelid.

33
Q

Superficial Temporal Artery

A

Origin:
Smaller terminal branch of external carotid artery

Supplies:
Facial muscles and skin of frontal and temporal regions.

34
Q

Internal Jugular Vein

A

From side of head, face and neck - drain into brachiocephalic vein

35
Q

External Jugular Vein

A

From side of head, face and neck - drain into subclavian vein

36
Q

Brachiocephalic vein

A

Receives blood from Internal jugular, internal thoracic vein, and subclavian vein - drains into Superior Vena Cava

Gross Anatomy Unit 2 (10 decks)

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