Blood Vessels And Lymphatics Flashcards
What are the 3 parts of the first part of the subclavian a?
Vertebral a.
Internal thoracic a.
Thyrocervical a.
What are the parts of the thyrocervical trunk?
Inferior thyroid a. (Ascending cervical a. And inferior laryngeal a)
Suprascapular a.
Transverse cervical a.
What divisions arise from the second part of the subclavian a?
Costcervical trunk (deep cervical a. And superior intercostal a.)
What arises from the third part of the subclavian a.?
Dorsal scapular a.
_______ is the medial border of the first part of the subclavian a.?
Anterior scalene muscle
The Vertebral a. Travels through ______ foramen?
CV6-1, foramen magnum
Basilar a. And vertebral a.supply which structures?
Brainstem, cerebellum, and upper spinal cord
Describe the subclavian steal syndrome
Syndrome is due to the obstruction of the subclavian a. Prox. To the vertebral system (supplies the brain) into the distal subclavian a. (Ipsilateral extremity)
Describe the vertebral-basilar insufficiency.
Decreased blood flow to the brain (coma, quadriplegia)
Path of the internal thoracic a?
Branches from the subclavian a. Opposite the vertebral a. And courses inferiorly into the thorax just posterior to the costal cartilages
The right common carotid a. Begins some at the bifurcation of the _____________?
Brachiocephalic trunk
The left common carotid a. Arises from the apex of the __________ and passes through the superior mediastinum>
Aortic arch
___________ a. Is the first branch of the internal carotid a.?
Ophthalmic a.
There is no branches in the neck
Describe the circle of Willis.
Hexagonal arterial circle at the base of the brain
Distributes the majority of the blood to the brain
What are the 8 branches of the external carotid a.?
Superior thyroid a., ascending pharyngeal a., lingual a., facial a., occipital a., posterior auricular a., superficial temporal a., maxillary a.