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20 Cards in this Set
- Front
- Back
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What are muscles of the trunk and neck called?
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axial muscles
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What are the muscles that lie dorsal to the transverse processes of the vertebrae?
What is their primary action? |
Epaxial muscles
extend the vertebral column |
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What are the muscles that lie ventral to the transverse processes of the vertebral column? (even those of the thoracic and abdominal walls)
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Hypaxial muscles
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What are the hypaxial neck muscles?
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longus capitus and longus colli
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What is the action and innervation of longus capitis? Where does it run from?
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flex the atlanto-occipital joint and draw the neck downward
innervated by ventral branches of cervical spinal nerves from transverse processes of C2-C6 to the basioccipital bone |
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What is the action and innervation of longus colli? How many parts are there?
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draws the neck downward
innervated by ventral branches of cervical spinal nerves 4 parts- most cranial is on atlas |
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Muscles that increase the size of the thoracic cavity assist with? Move the ribs which way?
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inspiration- ribs move cranially and outward
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Muscles that decrease the size of the thoracic cavity assist with? Move ribs which way?
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expiration-move ribs caudally and inward
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Which muscle is located just dorsal to the brachial plexus? (has 2 parts)
action innervation |
Scalenus
draws ribs craniall-inspiration innervates by ventral branches of cervical and thoracic spinal nerves |
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Which muscle of the thoracic wall is located dorsal to the scapula and inserts on ribs 2-10?
action innervation |
serratus dorsalis cranialis
lifts ribs for inspiration innervated by intecostal nn. |
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Which muscle of the thoracic wall originates on the thoracolumbar fascia and inserts on last 3 ribs?
action innervation |
serratus dorsalis caudalis
draws last few ribs caudally for expiration innervated by intercostal nn. |
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Which muscle of the thoracic wall originates on the 1st rib and inserts on ribs 2-4?
action innervation |
rectus thoracis
aid in inspiration innervated by intercostal nn. |
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Which direction do the external intercostals run?
action innervation |
caudoventral
pull ribs cranial for inspiration innervated by intercostal nn. |
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Which direction do the internal intercostals run?
action innervation |
cranioventral
retract the ribs for expiration innervated by intercostal nn. |
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What are the muscles of the abdominal wall?
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external abdominal oblique
internal abdominal oblique transversus abdominis rectus abdominis |
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Name muscles for inspiration
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Scalenus
Serratus dorsalis cranialis Rectus thoracis External intercostals |
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Name muscles for expiration
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Serratus dorsalis caudalis
Internal intercostals |
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Name the muscle that flexes the atlanto-occipital joint
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longus capitis
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Which muscles draw the neck downward?
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longus capitis and longus colli
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Which muscles arise from the thoracolumbar fascia?
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serratus dorsalis cranialis and caudalis
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