Flashcards
Muscles of Thorax, Abdominal Wall, and Pelvis
Cards in this deck (10)
- 1external intercostals (vertebral column to costachondral junction)Origin: Inf. Border of rib above
Insertion: Sup. Border of rib below
Action: Elevate rib cage (inspiration) - 2internal intercostals (sternum to angle of ribs)Origin: Sup. Border of rib below
Insertion: Inf. Border of rib above
Action: Depress rib cage (expiration) - 3thoracic diaphragm (floor of thoracic cavity)Origin: Inf. Border of rib cage and sternum
Insertion: Central tendon
Action: Prime mover of inspiration: Flattens and enlarges dimensions of thorax - 4rectus abdominis (pubic crest to xyphoid process) [covered w/ sheath]Origin: Pubic crest and symphysis
Insertion: Xiphoid process and costal cartilages
Action: Flex lumbar region of vertebral column - 5External oblique (outer surfaces of lower 8 ribs to linea alba)Origin: Outer surfaces of lower 8 ribs
Insertion: Linea alba
Action: Jointly: flex vertebral column; Individually: rotation and lateral flexion - 6Internal oblique (iliac creasr to cartilage of lower 3 ribs, linea alba and pubic bone)Origin: Fascia connecting to lumbar spine; iliac crest
Insertion: Linea alba, pubic crest, last 3 ribs
Action: Jointly: flex vertebral column; Individually: rotation and lateral flexion - 7Tansverse abdominis (horizontal from 6 lower ribs, lumbar vertebrae, iliac crest to linea alba and pubic bone)Origin: Inguinal ligament; fascia connecting to lumbar spine; iliac crest, last 6 ribs
Insertion: Linea alba; pubic crest
Action: Compress abdominal cavity - 8Pelvic diaphragm (muscles closing pelvic outlet)Levator ani
Coccygeus - 9Urogenital diaphragmDeep transverse perineus
- 10superficial spacei. Ischiocavernosus
ii. Bulbospongiosus
iii. Superficial transverse perineus
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- Anatomy & Physiology 1 Flashcards on Muscles of Thorax, Abdominal Wall, and Pelvis, created by Mansi Trikha on 05/12/2017.
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- Mansi Trikha
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