LATERAL VASCULTURE

Question 1

right common carotid artery

Answer 1

The right common carotid artery arises from a bifurcation of the brachiocephalic trunk (the right subclavian artery is the other branch). This bifurcation occurs roughly at the level of the right sternoclavicular joint.

Question 2

left common carotid artery

Answer 2

The left common carotid artery branches directly from the arch of the aorta. The left and right common carotid arteries ascend up the neck, lateral to the trachea, and the esophagus. They do not give off any branches in the neck.

Question 3

at the carotid triangle

Answer 3

At the level of the superior margin of the thyroid cartilage (C4), the carotid arteries split into the external and internal carotid arteries. This bifurcation occurs in an anatomical area known as the carotid triangle.

Question 4

carotid sinus

Answer 4

The common carotid and internal carotid are slightly dilated here, this area is known as the carotid sinus, and is important in detecting and regulating blood pressure.

Question 5

external carotid artery

Answer 5

The external carotid artery supplies the areas of the head and neck external to the cranium. After arising from the common carotid artery, it travels up the neck, passing posteriorly to the mandibular neck and anteriorly to the lobule of the ear.

Question 6

The artery ends within the parotid gland by dividing into the superficial temporal artery and the maxillary artery. It gives rise to six branches in total:

Answer 6

•2 terminal branches
(maxillary + superficial temporal artery)
•3 anterior branches
(superior thyroid artery + lingual + facial arteries)
•2 posterior branches
(Occipital artery + posterior auricular)
•1 medial branch
Ascending pharyngeal artery

Question 7

The maxillary artery supplies the deep structures of the face, while the facial and superficial temporal arteries generally supply superficial areas of the face.

Answer 7

true

Question 8

internal carotid artery

Answer 8

The internal carotid arteries do not supply any structures in the neck, entering the cranial cavity via the carotid canal in the petrous part of the temporal bone.
Within the cranial cavity, the internal carotid artery supplies:

The brain
Eyes
Forehead

Question 9

The carotid sinus is located at the origin of the ICA

Answer 9

true

Question 10

•Here the wall is thin and its contained baroreceptors are
supplied by the glossopharyngeal and vagus nerves
which mediate blood pressure to the medullary centers

Answer 10

•Here the wall is thin and its contained baroreceptors are
supplied by the glossopharyngeal and vagus nerves
which mediate blood pressure to the medullary centers

Question 11

The cells of the carotid body contain chemoreceptors
with respiratory reflexes and they too are innervated by
the glossopharyngeal and vagus nerves

Answer 11

true

Question 12

Which vertebral level marks the bifurcation of the common carotid arteries?

Answer 12

C4

Question 13

internal jugular vein begins in the cranial cavity as a continuation of

Answer 13

sigmoid sinus. the beginning of this vein is dilated and is called the superior bulb, It exits the skull via the jugular foramen.

Question 14

In the neck, the internal jugular vein descends within the carotid sheath, deep to the sternocleidomastoid muscle and lateral to the common carotid artery. At the base of the neck, posteriorly to the sternal end of the clavicle, the IJV combines with the

Answer 14

subclavian vein to form the brachiocephalic vein. Immediately prior to this, the inferior end of the internal jugular vein dilates to form the inferior bulb. It has a valve that stops back-flow of blood

Question 15

During its descent down the neck, the internal jugular vein receives blood from the

Answer 15

facial, lingual, occipital, superior, and middle thyroid veins. These veins drain blood from the anterior face, trachea, thyroid, esophagus, larynx, and muscles of the neck.