10 Questions
What is the relationship between the cutaneous vessels and the perforating branches of the internal thoracic artery?
The cutaneous vessels are accompanied by the perforating branches of the internal thoracic artery.
What is the function of the platysma muscle?
The platysma muscle is responsible for wrinkling the skin of the neck when the angle of the mouth is pulled down.
Where does the platysma muscle originate from?
The platysma muscle originates from the deep fascia covering the pectoralis major.
What is the relationship between the areas supplied by the C3, C4, T2, and T3 spinal nerves?
The areas supplied by C3 and C4 do not overlap, and the areas supplied by T2 and T3 do not overlap.
What is the origin of the cutaneous vessels?
The cutaneous vessels originate from the posterior intercostal arteries.
What is the area supplied by the intercostobrachial nerve of T2?
Floor of the axilla and upper half of the medial side of the arm
Which nerves supply the skin below the level of the second rib?
Anterior and lateral cutaneous branches of the second to sixth intercostal nerves
Which nerves are branches of the cervical plexus and supply skin over the upper half of the deltoid?
Medial, intermediate, and lateral supraclavicular nerves
What is the area supplied by spinal nerves C3 and C4?
Skin over the upper half of the deltoid
Why does the area supplied by spinal nerves C3 and C4 meet the area supplied by spinal nerves T2 and T3?
Because of intervening nerves being pulled away to supply the upper limb
Test your knowledge on the sensory innervation, blood supply, and anatomy of the pectoral region. Learn about the cutaneous nerves, arteries, and muscles in this area.
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