Vasculature Of Head And Neck Flashcards
Brachiocephalic trunk
Superior vena cava
Inferior vena cava
Descending aorta
Pulmonary trunk
Pulmonary artery
Pulmonary veins
Arch of aorta
Left subclavian artery
Left common carotid artery
What does the Brachiocephalic trunk supply?
The right head and neck and right upper limb
What does the left common carotid artery supply?
Left hand side of head and neck
What does the left subclavian artery supply?
The left upper limb
What does the Brachiocephalic trunk branch of into?
Right common carotid artery
Right subclavian artery
Brachiocephalic trunk
Right subclavian artery
Right common carotid artery
The right subclavian artery can be divided into ? Parts based on the location of ? Muscle
3
The scalenus anterior
Where is part 1 of the right subclavian artery located in relation to scalenus anterior muscle?
Medial to muscle
Where is part 2 of the right subclavian artery located in relation to scalenus anterior muscle?
Behind muscle
Where is part 3 of the right subclavian artery located in relation to scalenus anterior muscle?
Lateral to muscle
Name this part of the right subclavian artery
3
1
2
Vertebral artery
What does the vertebral artery supply?
Brain
Where does the vertebral artery travel to get to the cranial cavity?
The neck via the transverse foramina of cervical vertebrae
Thyrocervical trunk
Inferior thyroid artery
What does the thyrocervical trunk supply?
Thyroid and neck area
What does the inferior thyroid artery supply?
Thyroid gland
Internal thoracic artery
The internal thoracic artery descends ? On either side of the ?
Inferiorly
Sternum
The internal thoracic artery branches off into ? That supply the ? Part of each ?
Anterior intercostal arteries
Anterior
Intercostal space
Inferior thyroid artery
What supplies the thyroid below this line?
Inferior thyroid artery
The common carotid artery bifurcates into?
Internal carotid artery
External carotid artery
Common carotid artery
Superior thyroid artery
Right internal carotid artery
Right external carotid artery
Laryngeal prominence of the thyroid cartilage (Adam’s apple)
Thyroid gland
What supplies the area of the thyroid above the dotted line?
Superior thyroid artery
Which of the following arteries are located within the carotid sheath?
Internal carotid artery
External carotid artery
Common carotid artery
Internal carotid artery - in
External carotid artery - out
Common carotid artery - in
What r the 2 arterial blood supplies to the brain?
Vertebral artery through Foramen magnum - posterior
Internal carotid artery through carotid canal - anterior and middle
Internal carotid artery
External carotid artery
Carotid body
Carotid sinus
Glossopharyngeal nerve CNIX
What is the carotid body?
Peripheral chemoreceptor that monitors the chemical composition of arterial blood
What innervates the carotid body?
Glossopharyngeal nerve CNIX
What is the carotid sinus?
Contains baroreceptors for monitoring blood pressure
What is the mnemonic to remember the 8 branches of the external carotid artery?
Some
Anatomists
Like
Fries
Others
Prefers
Mashed
Spuds
Name the 8 branches of the external carotid artery in order
Superior thyroid
Ascending pharyngeal
Lingual
Facial
Occipital
Posterior auricular
Maxillary
Superficial temporal
What does the superior thyroid branch of the external carotid artery supply?
Superior area of thyroid
What does the ascending pharyngeal branch of the external carotid artery supply?
Pharynx
What does the lingual branch of the external carotid artery supply?
Tongue
What does the facial branch of the external carotid artery supply?
Majority of the soft tissues of face
What does the occipital branch of the external carotid artery supply?
Soft tissues in the occipital region of the skull
What does the posterior auricular branch of the external carotid artery supply?
Soft tissues behind the ear
What does the maxillary branch of the external carotid artery supply?
Deep structures of the face
What does the superficial temporal branch of the external carotid artery supply?
Soft tissues in the region of the temporal fossa
Superficial temporal
Maxillary
Facial
Lingual
Superior thyroid
Ascending pharyngeal
Posterior auricular
Occipital
What is the blood supply to the lower dentition?
Inferior alveolar artery a branch of the first part of the maxillary artery
Superficial temporal artery
Maxillary artery
Inferior alveolar artery
How can bacteria from a dental abscess enter the blood supply?
Enters inferior alveolar vein and goes back towards the heart
Superficial temporal vein
Maxillary vein
Facial vein
Inferior alveolar vein
Anterior division of retromandibular vein
Common facial vein
Internal jugular vein
External jugular vein
Posterior auricular vein
Posterior division of retromandibular vein
Retromandibular vein
The superficial temporal vein drains venous blood from where?
The scalp in the temporal region
The maxillary vein drains venous blood from where?
Deep structures within the infratemporal fossa
The retromandibular vein is formed from what two veins?
Superficial temporal vein
Maxillary vein
Why is the retromandibular vein unusual?
It branches
The external jugular vein is formed from what two veins?
Posterior division of retromandibular vein
Posterior auricular vein
The posterior auricular vein drains blood from where?
Behind the ear
The external jugular vein overlies what?
Sternocleidomastoid
The external jugular vein drains into what?
Subclavian vein
The common facial vein is formed by which two veins?
Anterior division of retromandibular vein
Facial vein
The common facial vein drains into what?
Internal jugular vein
What r the group of intra-cranial veins called?
Dural venous sinuses
How do the superficial veins of the face communicate with the Dural venous system?
Via ophthalmic veins between the facial vein and cavernous sinus
What can happen if there is a cut to the danger triangle of the face?
Bacteria can enter the facial vein and travel to the Dural venous sinuses and cavernous sinus via ophthalmic veins resulting in cavernous sinus thrombosis (infection)
Thoracic duct
Right Brachiocephalic vein
Right subclavian vein
Right lymphatic duct
Internal jugular vein
The thoracic duct transmits lymph into the venous system where?
Venous angle
What is the venous angle?
Point at which the subclavian vein and internal jugular vein join to form the Brachiocephalic vein
Brachiocephalic veins
What is endocarditis?
Infection of the cardiac valves
What is bacteraemia?
Bacteria in the bloodstream
Name three possible dental origins of bacteria that could result in bacterial endocarditis
Abscess
Periodontal disease
Dental manipulations
How does bacterial endocarditis occur in a dental context
Dental origin bacteria
Travels in blood stream (venous drainage)
Reaches heart valve
Causes bacterial endocarditis
Bacterial endocarditis can result in 3 things
Damage heart valve
Heart murmur
Heart failure