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Canada (481,115)
York University (32,559)
KINE 2031 (127)
Neil Smith (92)
Lecture

Trunk Muscles Lecture Notes Clear and concise notes taken d..
Trunk Muscles Lecture Notes Clear and concise notes taken during lecture. (Received an A+)

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School
York University
Department
Kinesiology & Health Science
Course
KINE 2031
Professor
Neil Smith
Semester
Fall

Description
Trunk MusclesProvide length to axial skeleton support and movement to vertebral columnSpinal extensors run all the way down the vertebral column o Very strong postural musclesSternocleidomastoid Mostly involved in rotation of the neck also flexion of the neckIntercostal muscleso External originate one above insert one below expands the thoracic cavity o Internal deep originate one below insert one above contracts the thoracic cavityFibres run perpendicular to the external to protect the ribs Only used in forced exhalationDiaphragm partitions the thoracic and abdominopelvic cavities o Attaches to a fibrous central tendon when it contracts the tendon is pulled downwards expanding the thoracic cavity for inspirationExternal Abdominal Oblique originates
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