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Figures & data
Figure 1. Photomacrograph of the axillary region and medial brachial surface of a male adult specimen of Alouatta guariba clamitans evidencing the constitution of the brachial plexus and its cranial (C4, C5 and C6), medium (C7) and caudal (C8 and T1) trunks. cb = communicating branch; nax = axillary nerve; ncrap = cranial pectoral nerve; nmu = musculocutaneous nerve; nmcf = medial cutaneous of the forearm nerve; nme = median nerve; nsb = subscapularis nerve; nsc = subclavius nerve; nsp = suprascapularis nerve; nra = radial nerve; ntlo = long thoracic nerve; nul = ulnar nerve. Scale bar: 10 mm.
Figure 2. Total number of contributions of the ventral branches (segments C4, C5, C6, C7, C8, T1 and T2) in the formation of brachial plexus (n = 10) of Alouatta guariba clamitans.
Table I. Origin and frequency of the nerves of the brachial plexus that supply the intrinsic muscles of the thoracic limb of Alouatta guariba clamitans.
Table II. Origin and frequency of the nerves of the brachial plexus that supply the extrinsic muscles of the thoracic limb of Alouatta guariba clamitans.
Table III. Muscle innervation of the brachial plexus of Alouatta guariba clamitans.
Figure 3. Photomacrograph of the medial surface of the right arm of an adult male specimen of Alouatta guariba clamitans, evidencing the relations between nerves and blood vessels. aax = axillary artery; abr = brachialis artery; nmcf = medial cutaneous of the forearm nerve; nme = median nerve; nmu = musculocutaneous nerve; nra = radial nerve; nsb = subscapularis nerve; nsc = subclavius nerve; nsp = suprascapularis nerve; nul = ulnaris nerve; vax = axillary vein; vbr = brachialis vein. Scale bar: 10 mm.
