Head & Neck Arteries + Veins + Lymph Drainage Flashcards

1
Q

The right common carotid artery arises from?

A

brachiocephalic artery behind the right sternoclavicular joint

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2
Q

The left common carotid artery arises from?

A

arch of the aorta in the superior mediastinum

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3
Q

bifurcation of common carotid arteries occurs at the level of?

A

upper border of thyroid cartilage

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4
Q

carotid sinus

A
  • At its point of division, the terminal part of the common carotid artery or the beginning of the internal carotid artery shows a localized dilatation, called the carotid sinus
  • The tunica media of the sinus is thinner
  • the adventitia is relatively thick and contains numerous nerve endings derived from the glossopharyngeal nerve.
  • baroreceptor
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5
Q

Carotid Sinus Hypersensitivity

A

In cases of carotid sinus hypersensitivity, pressure on one or both carotid sinuses can cause excessive slowing of the heart rate, a fall in blood pressure, and cerebral ischemia with fainting, (syncope)

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6
Q

Carotid Body

A
  • it is a small structure that lies posterior to the point of bifurcation of the common carotid artery
  • It is innervated by the glossopharyngeal nerve
  • its a chemoreceptor, being sensi- tive to excess carbon dioxide and reduced oxygen tension in the blood. Such a stimulus reflexly produces a rise in blood pressure and heart rate and an increase in respiratory movements
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7
Q

Carotid Pulse

A

can be easily palpated just beneath the anterior border of the sternocleidomastoid muscle at the level of the superior border of the thyroid cartilage.

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8
Q

anterolateral relations of common carotid artery

A

The skin, the fascia, the sternocleido- mastoid, the sternohyoid, the sternothyroid, and the superior belly of the omohyoid

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9
Q

posterior relations of common carotid artery

A

The transverse processes of the lower four cervical vertebrae, the prevertebral muscles, and the sympathetic trunk

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10
Q

medial relations of common carotid artery

A

larynx
pharynx
trachea
esophagus

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11
Q

lateral Relations of the Common Carotid Artery

A

The internal jugular vein and the vagus nerve

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12
Q

external carotid artery supplies:

A
neck
face
scalp 
tongue
maxilla
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13
Q

which structures cross the external carotid artery? (ant relations)

A
the anterior border of the sternocleidomastoid
hypoglossal nerve
posterior belly of digastric
stylohyoid muscles
facial nerve (in parotid gland)
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14
Q

medial relations of external carotid artery

A
pharynx
internal carotid artery
stylopharyngeus muscle
glossopharyngeal nerve
pharyngeal branch of the vagus
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15
Q

Branches of the External Carotid Artery (samflops)

A
Superior thyroid artery
Ascending pharyngeal artery
Lingual artery
Facial artery
Occipital artery
Posterior auricular artery
Superficial temporal artery
Maxillary artery
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16
Q

The middle meningeal artery enters the skull through

A

foramen spinosum

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17
Q

internal carotid artery supplies

A

brain
eye
forehead
nose

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18
Q

internal carotid artery terminates by dividing into

A

anterior cerebral artery

middle cerebral artery

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19
Q

anterolateral relations of internal carotid artery

A

below digastric: skin fascia sternocleidomastoid hypoglossal nerve

above digastric: stylohyoid, stylopharyngeus, glossopharyngeal nerve,pharyngeal branch of the vagus, the parotid gland, and the external carotid artery

20
Q

posterior Relations of the Internal Carotid Artery

A

sympathetic trunk, longus capitis, transverse processes of the upper three cervical vertebrae

21
Q

medial relations of internal carotid artery

A

pharyngeal wall and the superior laryngeal nerve

22
Q

lateral relations of internal carotid artery

A

internal jugular vein

vagus nerve

23
Q

Arteriosclerosis of the Internal Carotid Artery

A
  • visual impairment or blindness in the eye on the side of the lesion because of insufficient blood flow through the retinal artery
  • motor paralysis and sensory loss may also occur on the opposite side of the body because of insufficient blood flow through the middle cerebral artery.
24
Q

as it emerges from the cavernous sinus, the internal carotid artery gives off

A

ophthalmic artery

25
Q

the only blood supply to the retina?

A

The central artery (branch of ophthalmic artery)

26
Q

anterior cerebral supplies

A

the medial and the superolateral surfaces of the cerebral hemisphere

27
Q

Middle Cerebral Artery supplies

A

the entire lateral surface of the cerebral hemisphere except the narrow strip along the superolateral margin (which is supplied by the anterior cerebral artery) and the occipital pole and inferolateral surface of the hemisphere (both of which are supplied by the posterior cerebral artery)

-The middle cerebral artery thus supplies all the motor area of the cerebral cortex except the leg area

28
Q

The circle of Willis lies in

A

subarachnoid space

29
Q

The circle of Willis is formed by

A
  • the anastomosis between the branches of the two internal carotid arteries and the two vertebral arteries
  • The anterior communicating, anterior cerebral, middle cerebral, posterior communicating and basilar artery (formed by union of vertebral arteries, basilar then divides into to two posterior cerebrals) contribute in circle formation
30
Q

The right subclavian artery arises from

A

brachiocephalic artery, behind the right sternoclavicular joint

31
Q

at what level right subclavian artery becomes axillary?

A

At the outer border of the 1st rib

32
Q

The left subclavian artery arises from

A

the arch of the aorta in the thorax

scalenus anterior divides it into 3 parts

33
Q

The first part of the subclavian artery extends from

A

the origin of the subclavian artery to the medial border of the scalenus anterior muscle, it gives off: vertebral artery, thyrocervical trunk, internal thoracic artery

34
Q

vertebral arteries from opposite sides join to form

A

basilar artery, which supplies pons, the cerebellum, internal ear and terminates by dividing into two posterior cerebral arteries

35
Q

branches of second part of subclavian artery

A

costocervical trunk which divides into

  • superior intercostal artery (supplies 1st and 2nd intercostal spaces)
  • deep cervical artery
36
Q

branches of third part of subclavian artery

A

The third part of the subclavian artery usually has no branches. Occasionally, however, the superficial cervical arteries, the suprascapular arteries, or both arise from this part.

37
Q

In severe traumatic accidents to the upper limb involving laceration of the brachial or axillary arteries, it is important to remember that the hemorrhage can be stopped by exerting strong pressure downward and backward on?

A

the third part of the subclavian artery. The use of a blunt object to exert the pressure is of great help, and the artery is compressed against the upper surface of the 1st rib.

38
Q

The venous sinuses are situated between

A

the periosteal and the meningeal layer of the dura mater

39
Q

venous sinuses include

A
superior and inferior sagittal sinuses
the straight sinus
the transverse sinuses
the sigmoid sinuses
the occipital sinus
the cavernous sinuses
superior and inferior petrosal sinuses
40
Q

The facial vein is formed at the medial angle of the eye by the union of

A

the supraorbital and supratrochlear veins

41
Q

internal carotid artery branches in cranial cavity

A

ophthalmic artery
posterior communicating artery
anterior cerebral artery
middle cerebral artery

42
Q

branches of thyrocervical trunk

A
  • inf thyroid artery
  • transverse cervical artery (runs to trapezius)
  • suprascapular artery
43
Q

in 6th intercostal space, internal thoracic artery divides into:

A
  • superior epigastric artery

- musculophrenic artery

44
Q

second part of subclavian artery

A

lies behind scalenus anterior muscle, within the interscalene triangle

45
Q

intracranial veins include

A
  • brain veins
  • dural venous sinuses
  • diploic veins
  • emissary veins