Which blood vessel supplies blood to the deep muscles of the neck and shoulder and to the first two costal interspaces?
A) intercostal artery
B) costocervical artery
C) subscapular artery
D) long thoracic artery
E) ventral thoracic artery
B
Explanation:
A) There are 10 pairs of intercostal arteries that supply blood to the interspaces between the last 11 ribs.
C) The subscapular artery supplies blood to the dorsal shoulder muscles.
D) The long thoracic artery arises lateral to the ventral thoracic artery, passing caudally to the pectoral muscles and the latissimus dorsi.
E) The ventral thoracic artery arises and passes caudally from the axillary artery to supply the medial ends of the pectoral muscles.
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