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19 Cards in this Set
- Front
- Back
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Erector spinae (components, fxn, innervation) |
Iliocostalis, Longissimus, Spinalis Functions: - Bilateral contraction --> extension - Unilateral contraction --> ipsilateral bending Innervation: dorsal rami of spinal nerves |
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Deep muscles of back (components, fxn, innervation) |
Semispinalis (rotate and extend neck), rotatores (thoracic), multifidus (lumbar) Function: stabilize the spine
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Splenius fxn/innervation |
Function: - Bilateral contraction --> extends head/neck - Unilateral contraction --> laterally flexion, rotation to ipsilateral side Innervation: Dorsal rami of proximal spinal nerves |
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Neck muscles from superficial to deep |
Trapezius > Splenius > semispinalis capitis > semispinalis cervicis |
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Sternocleidomastoid fxn/innervation |
Functions: - Bilateral contraction --> extend head at C1-C2, flex neck at cervical vertebrae - Unilateral contraction --> Lateral flexion of neck (ipsilateral), rotation of head so face points superiorly and contralaterally Innervation: CN11 - spinal accessory nerve |
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Torticollis |
Abnormal neck posture due to a shortened SCM or dystonia in the SCM |
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Scalene muscles function |
Function to laterally flex the neck to the ipsilateral side * brachial plexus emerges between the anterior and middle scalene |
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Longus muscles (components, function) |
Capitis and colli Function to anteriorly flex head/neck |
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Anterolateral abdominals (components, fxn, innervation) |
External obliques, internal obliques, transverse abdominis Function: support, protect, and compress viscera, aid in forced expiration, trunk stability, posture Innervation: ventral primary rami of T6-L1 |
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Linea alba |
Median plane structure where the aponeuroses from the abdominals meet in the middle of the rectus sheath |
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Inguinal ligament |
Inferior specialization of the external oblique that goes from ASIS --> pubic tubercle |
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Anterolateral abdominals (components, fxn, innervation) |
External obliquesFunction: support, protect, and compress viscera, aid in forced expiration, trunk stability, postureInnervation: ventral primary rami of T6-L1 |
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Arcuate line |
The level 1/3 between umbilicus and pubic crest where the posterior part of rectus sheath ends and the aponeurosis becomes only anterior |
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Abdominal aorta branches |
3 unpaired visceral (Celiac, sup. mes., inf. mes.) 3 paired visceral (suprarenal superior and middle, renal, gonadal) 3 paired parietal (inf. phrenic, subcostal, lumbar) |
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Abdominal aorta branches at T12 |
Celiac trunk, inferior phrenic artery |
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Abdominal aorta branches at L1 |
Superior mesenteric artery, Renal arteries, middle suprarenal arteries |
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Abdominal aorta branches at L2 |
Gonadal arteries |
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Abdominal aorta branches L3 |
Inferior mesenteric artery |
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Abdominal aorta branches L4 |
Split of abdominal aorta into common iliacs |
