Anatomy – Arm Questions and Answers
What is separates the arm into the anterior and posterior components?
The intermuscular septum (medial and lateral).
What nerve innervates the muscles of the posterior arm?
Radial Nerve.
What nerve innervates the muscles of the anterior arm?
M...
Anatomy – Arm Questions and Answers
What is separates the arm into the anterior and posterior components? - answer The
intermuscular septum (medial and lateral).
What nerve innervates the muscles of the posterior arm? - answer Radial Nerve.
What nerve innervates the muscles of the anterior arm? - answer Musculocutaneous
Nerve.
Which main terminal branches have no innervation in the arm, but pass through to
innervate the forearm? - answer Median Nerve and Ulnar Nerve
What is the vein that arises on the dorsoradial surface of the hand and courses
proximally along the radial surface of the forearm? - answer Cephalic Vein.
What is the vein that arises on the ulnar side of the hand, courses up the medial aspect
of the forearm, and in the arm, pierces the brachial fascia at the junction between the
middle and lower thirds of the arm? - answer Basillic Vein
What is the lateral condyle on the distal humerus called? - answer Capitulum.
What is the medial condyle on the distal humerus called? - answer Trochlea.
What exists right below the deltoid tuberosity on the humerus? - answer Spiral (or
radial) groove.
What ligament holds the head of the radius close to the ulna? - answer Annular
Ligament.
In pronation, the distal radius is rolled ___ the distal ulna. - answer Over.
Where does the Long Head of the Triceps Brachii originate, insert, and what innervates
it? - answer -Origin - Infraglenoid tubercle of the scapula.
-Insertion - Olecrannon Process of the Ulna.
-Innervation - Radial N.
Where does the Lateral Head of the Triceps Brachii originate, insert, and what
innervates it? - answer -Origin - Superior to the radial groove.
-Insertion - Olecrannon Process of the Ulna.
-Innervation - Radial N.
Where does the Medial Head of the Triceps Brachii originate, insert, and what
innervates it? - answer -Origin - Inferior to the radial groove.
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