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All main topics / Medicine / Anatomy

Blood Vessels of Head and Neck (20 Cards)

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1
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Branching of the Common Carotid
Right comes off brachiocephalic

Left comes off aortic arch

Terminates at Thyroid Cartilage --> Internal and External
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Glossopharyngeal Nerve (CN-IX)
swallowing and gag reflex
3
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Carotid Sinus
dilation/swelling on the internal carotid

baroreceptors: respond to changes in BP, mediate changes in cardiac activity
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Carotid Body
mass of tissue at bifurcation of Common carotid

Chemoreceptors:
-responds to changes in chemical composition of blood
-reflex changes in RESPIRATORY activities
5
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Carotid Sheath
-Fibrous connective tissue

-surrounds carotid artery, Internal jugular vein and vagus nerve
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Components of the Carotid Triangle
Spinal Nerves I, II, III

Internal Jugular vein
Internal Carotid
External carotid

Pneumonic 1, 2, 3. In in and out.

out being external... helps me remember :)
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Heart Innervation
Sympathetic: speeds up heart, dilates coronary artery
                             Superior Cervical ganglion

Parasympathetic: Slows down heart, constricts coronary
                                    CN-X, Vagus Nerve
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External Carotid Artery- Branches
Superior Thyroid
Inferior Thyroid --- Comes off the thyrocervical trunk
Lingual
Facial
Angular
Occipital
Posterior Auricular
Maxillary (and its branches)
Superficial temporal
Ascending pharyngeal

Pneumonic
Some Idiots Laugh Frantically At Old People. Man, Someone Assist!
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Internal carotid Artery- Branches
Opthalmic Artery which branches into:
         Supratrochlear
         Supraorbital
         Anterior Ciliary
         Lacrimal
         Posterior Ciliary
Middle Cerebral
Anterior Cerebral
Posterior Communicating

Pneumonic

Oh, Some Sand And Land Put Me At Peace
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Circle of Willis- Anastomosis Importance
In case of occlusion, there will still be blood supply to all of the brain
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Anterior Cerebral Artery- location
Passes down the longitudinal fissurse
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Anterior Cerebral Artery- Supply
to medial & superior region of frontal and parietal hemispheres
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Anterior Communicating Artery
Connects the 2 anterior cerebral arteries, forming a circle.
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Middle Cerebral Artery- supply
Lateral region of brain (controlling hearing, sppech and Long term memory)
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Posterior Cerebral Artery- Supply
Both lateral and medial parts of occipital lobe
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Posterior Communicating artery- supply
Connects the posterior cerebral artery to the carotid arteries forming a circle.
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Posterior Communicating Artery Aneurysm
Compromises integrity of CN III- pressing on outside of nerve

Parasympathetic Fibers affected
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Posterior Communicating artery Aneurysm- Symptoms
Occulomotor ophthalmoplegia:

Wrinkled forehead
Raised eyebrow
Ptosis
Dilated Pupil
Downward abducted eye (only lateral rectus and superior oblique functional)
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Venous Drainage Flow Chart
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Venous Drainage- from Jugular to Vena Cava
Flashcard set info:
Author: rowais
Main topic: Medicine
Topic: Anatomy
School / Univ.: New England College of Optometry
Published: 20.12.2009
Tags: Blood Vessels
 
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