. The anatomy of the human body. Human anatomy; Anatomy. 778 NEUROLOGY. branches, viz., the great mastoid (y), the small mastoid, and the great auricular (q); and of descending branches, subdivided into the deep and the superficial ; the deep ones consisting of the internal descending branch (before s), the phrenic nerve (l), and the branch- es for the trapezius, levator anguli scapula, and rhomboideus; the superficial descending branches are the supra-clavicular and the acromial (m). According to their distribution, they may also be divided into muscular and cutaneous branches ; the muscular
. The anatomy of the human body. Human anatomy; Anatomy. 778 NEUROLOGY. branches, viz., the great mastoid (y), the small mastoid, and the great auricular (q); and of descending branches, subdivided into the deep and the superficial ; the deep ones consisting of the internal descending branch (before s), the phrenic nerve (l), and the branch- es for the trapezius, levator anguli scapula, and rhomboideus; the superficial descending branches are the supra-clavicular and the acromial (m). According to their distribution, they may also be divided into muscular and cutaneous branches ; the muscular consist of the internal descending, the phrenic, the branches for the trapezius, the levator anguli, and the rhomboideus; all the others are cutaneous, and are flattened like ribands. The Anterior Branch. The Superficial Cervical JVerve. The superficial cervical nerve (superficialis colli, s, fig. 285), vphich is often double, Fig-. in consequence of dividing earlier than usual, is des- tined exclusively for the skin of the neck and lower part of the face (sous-mentonniere, Chauss.), and is formed by the anastomoses of the second and third cervical nerves ; it emerges from the plexus opposite the middle of the neck, beneath the posterior border of the sterno-mastoid, around which it turns in the form of a loop, and then passes horizontally forward between that muscle and the platysma, runs at right angles beneath the external jugular vein, and divides into two branches—one ascending and larger, the oth- er descending; these two branches often form two distinct nerves. The descending branch passes downward and in- ward between the sterno-mastoid and the platysma, is reflected upward so as to form a loop, having its con- cavity turned upward, 'perforates the platysma, and then lies in contact with the skin, beneath which it may be traced as far as opposite the os hyoides. One of its twigs, which appears to me to be constant, having reached the side of the median line, is
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