Table 2.

Distribution of laryngeal muscle fiber types in the cat

Fiber type	Ta-X	Ta-V	PCA	CT
Slow	4.8 ± 0.9b	19.0 ± 1.5c	29.8 ± 1.8c	38.7 ± 0.7
Slow/2a	0	0.3 ± 0.1	0.7 ± 0.3	0.8 ± 0.2
2a	2.3 ± 0.6a	27.1 ± 2.3d	44.7 ± 3.4c	60.5 ± 0.9
2a/2x	0	1.5 ± 0.5	20.7 ± 3.6c	0
2x	14.5 ± 2.2a	51.9 ± 3.0a	3.7 ± 1.8	0
2x/2b	0.4 ± 0.2	0.3 ± 0.1	0.4 ± 0.3	0
2b	78.0 ± 3.1a	0	0	0

Footnotes indicate statistical significance (^ap<0.0001; ^bp<0.0002; ^cp<0.005; ^dp<0.01; t-test) compared with the value on the right.

Distribution of laryngeal muscle fiber types in the cat. The muscles are thyroarytenoid, external division (Ta-X), thyroarytenoid, vocalis division (Ta-V), posterior cricoarytenoid (PCA), and cricothyroid (CT) muscles. The fiber types are arranged in the order of increasing speed. Note that eo fibers are absent. Values are mean percentages ± SEM; n=4 for all muscles.