ɪnðə fˈɜːst ˌɪntɚkˈɔstəl spˈeɪs, ɪt ɡˈɪvz ˈɔf ɐ bɹˈæntʃ wˌɪtʃ ɪz dˈɪstɹɪbjˌuːɾᵻd ɪn ɐ mˈænɚ sˈɪmɪlɚ tə ðə dˌɪstɹɪbjˈuːʃən ʌvðɪ eɪˈoːɹɾɪk ˌɪntɚkˈɔstəlz.
In the first intercostal space, it gives off a branch which is distributed in a manner similar to the distribution of the aortic intercostals.