Branching of the Common Carotid
Right comes off brachiocephalic
Left comes off aortic arch
Terminates at Thyroid Cartilage --> Internal and External
Left comes off aortic arch
Terminates at Thyroid Cartilage --> Internal and External
Carotid Sinus
dilation/swelling on the internal carotid
baroreceptors: respond to changes in BP, mediate changes in cardiac activity
baroreceptors: respond to changes in BP, mediate changes in cardiac activity
Carotid Body
mass of tissue at bifurcation of Common carotid
Chemoreceptors:
-responds to changes in chemical composition of blood
-reflex changes in RESPIRATORY activities
Chemoreceptors:
-responds to changes in chemical composition of blood
-reflex changes in RESPIRATORY activities
Carotid Sheath
-Fibrous connective tissue
-surrounds carotid artery, Internal jugular vein and vagus nerve
-surrounds carotid artery, Internal jugular vein and vagus nerve
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 :)
Internal Jugular vein
Internal Carotid
External carotid
Pneumonic 1, 2, 3. In in and out.
out being external... helps me remember :)
Heart Innervation
Sympathetic: speeds up heart, dilates coronary artery
Superior Cervical ganglion
Parasympathetic: Slows down heart, constricts coronary
CN-X, Vagus Nerve
Superior Cervical ganglion
Parasympathetic: Slows down heart, constricts coronary
CN-X, Vagus Nerve
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!
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!
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
Supratrochlear
Supraorbital
Anterior Ciliary
Lacrimal
Posterior Ciliary
Middle Cerebral
Anterior Cerebral
Posterior Communicating
Pneumonic
Oh, Some Sand And Land Put Me At Peace
Circle of Willis- Anastomosis Importance
In case of occlusion, there will still be blood supply to all of the brain
Anterior Cerebral Artery- Supply
to medial & superior region of frontal and parietal hemispheres
Anterior Communicating Artery
Connects the 2 anterior cerebral arteries, forming a circle.
Middle Cerebral Artery- supply
Lateral region of brain (controlling hearing, sppech and Long term memory)
Posterior Communicating artery- supply
Connects the posterior cerebral artery to the carotid arteries forming a circle.
Posterior Communicating Artery Aneurysm
Compromises integrity of CN III- pressing on outside of nerve
Parasympathetic Fibers affected
Parasympathetic Fibers affected
Posterior Communicating artery Aneurysm- Symptoms
Occulomotor ophthalmoplegia:
Wrinkled forehead
Raised eyebrow
Ptosis
Dilated Pupil
Downward abducted eye (only lateral rectus and superior oblique functional)
Wrinkled forehead
Raised eyebrow
Ptosis
Dilated Pupil
Downward abducted eye (only lateral rectus and superior oblique functional)
Venous Drainage Flow Chart
Venous Drainage- from Jugular to Vena Cava
Kartensatzinfo:
Autor: rowais
Oberthema: Medicine
Thema: Anatomy
Schule / Uni: New England College of Optometry
Veröffentlicht: 20.12.2009
Tags: Blood Vessels
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