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NWHSU Mash GA2Q2 VCa
NWHSU Mash GA 2 Q 2 Vessels Carotids
Question | Answer |
---|---|
Structure located directly in the bifurcation of the common carotid a. | Carotid body |
What is the carotid tubercle? Be specific and complete!! | Anterior tubercle of transverse process of C6 vertebra |
What is the function of the following: a) carotid body | monitors O2 and CO2 levels in blood |
What is the function of the following: b) carotid sinus | regulates systemic BP |
Forms posterior border of carotid triangle | SCM |
Right common carotid a. arises deep to this surface landmark. | Sternoclavicular joint |
Forms the anteroinferior border of the carotid triangle. | Superior belly of omohyoid m. |
forms the anterosuperior border of the carotid angle. | Posterior belly of digastric, stylohyoid mm. |
Level at which the common carotid bifurcates into internal and external branches | C3/4 (upper border of thyroid cartilage) |
Assume a partial occlusion of the right common carotid. Give correct sequence by which a drop of blood would travel to reach an area distal to the occlusion. Begin with the common carotid artery and end with the maxillary. | common carotid>external carotid>superior thyroid>ascending pharyngeal>lingual>facial>occipital>posterior auricular>superficial temporal>maxillary |
Besides the carotid a., give the structures in the carotid sheath | Internal jugular v., vagus n. |
vessel which directly supplies floor of mouth and tongue | Lingual A. |
branch of the external carotid which supplies the dura, tympanic cavity, palatine tonsil, longus capitus and colli, etc. | Ascending pharyngeal |
Specific artery that supplies the scalp above and behind the ear, tympanic cavity, mastoid air cells, etc. | Posterior auricular |
branch of maxillary a. that supplies teeth via the mandibular foramen | Inferior alveolar |
Branch of maxillary a. that supplies the nasal septum and paranasal sinuses | Sphenopalatine |
Branch of maxillary a. which passes through the foramen spinosum | Middle meningeal |
branch of maxillary artery which supplies molars and premolars of maxilla, gums, and maxillary sinus. | Posterior superior alveolar |
branch of maxillary artery which supplies ROOF of mouth | Greater palatine a. |
Third branch of the external carotid a. | Lingual Artery |
What branches of the external carotid a. supply the palatine tonsils? | Ascending pharyngeal, lingual, facial |
Branch of internal carotid a. which travels in the longitudinal cerebral fissure. | Anterior cerebral |
Dilation at proximal beginning of internal carotid artery. | Carotid sinus |
Largest branch of the internal carotid a., runs in the lateral cerebral fissure to supply certain lobes | Middle cerebral |
Largest branch of the internal carotid artery : it curves around corpus callosum and supplies the medial surface of the hemispheres | Middle cerebral |
Cranial nerve that CROSSES the lower lateral part of both the internal and external carotid arteries | Hypoglossal |
Assume 1 or both of the internal carotid aa. Are partially occluded. Name the specific artery that would allow: b) retrograde blood flow directly into the cerebral part of the internal carotid system from the external carotid system | ophthalmic |
Name the branches of the petrous part of the internal carotid a. | Caroticotympanic & Artery of the pterygoid canal |
The PETROUS part of the internal carotid a. is separated from what two SPECIFIC structures by a thin piece of bone | Cochlea of inner ear and trigeminal ganglia |
Name the direct branches of the cerebral part of the internal carotid a. | Ophthalmic, choroidal, posterior communicating, middle cerebral, anterior cerebral |
The ______ part of the internal carotid artery passes in close association with ______ (nerves). They may be affected by an aneurysm of the vessel. | Cavernous; III, IV, V1, VI |
From lecture, the internal carotid artery supplies _________ (%) percent of the ___________ (be very specific) | 80-90%; Cerebral hemispheres |
Draw the circulus arteriosis (circle of Willis) and label all component vessels. The two circles below represent the internal carotids. Begin the drawing from them. Be accurate and neat! | Draw diagram |
Name the vessels with which the descending branch of the occipital Artery has anastomosis | Vertebral artery, thyrocervical trunk, costocervical trunk |
Vessel which passes through the foramen lacerum (Be Complete!) | Meningeal Branch of Ascending Pharyngeal Artery |
Name the branches of the ophthalmic artery | lacrimal, central, dorsal nasal, supraorbital, supratrochlear, palpebral |
Physiologically (not structurally) why does the foramen ovale close after birth? | increased pressure in left atrium or decreased pressure in right atrium |