Spine and Thorax
The Axis is on what?
C1
What does the atlanto-axial joint provide?
What makes up the transversospinalis group?
Multifidi, rotatores, and semispinalis capitis
Thoracic and sacral sections of the spine bow posteriorly to form what type of curve?
Kyphotic
What is the deepest muscle of the abdomen?
Quadratus Lumborum
The Atlas is on what?
C2
What does the atlanto-occipital joint provide?
flexion, extension (nodding) movement
Multifidi, 2-4 segments
Passive flexion of the spine would shorten/lengthen the iliocostalis?
lengthen
What actions do QL preform?
Lateral flexion, elevates/tilts the hip
How many total vertebra are there?
24
7 cervical, 12 thoracic, 5 lumbar, sacrum and coccyx
The cartilaginous disks between the vertebra that offer movement and cushioning is what joint?
Intervertebral joints
What muscle lies deep to the multifidi and spans 1-2 spinal segments?
Rotatores
passive rotation of the spine to the opposite side would shorten/lengthen the rotatores?
shorten
What is the primary muscle of respiration?
Diaphragm
How many ribs?
12 pairs, 1-7 true ribs, 8-12 are false ribs, 11 and 12 are floating ribs
What muscles make up the erector spinae group?
Spinalis, longissimus, and iliocostalis
Which muscles are located between the ribs?
Intercostals
passive lateral flexion of the spine to the same side would shorten/lengthen the longissimus?
shorten
When you inhale, the fibers of the diaphragm are pulled which way?
Down or inferiorly shortening the muscle
Jugular notch, Manubrium, and Xyphoid process makes up what?
Sternum
What are the erector spinae group actions?
Laterally flex the vertebral column to the same side unilaterally, and extend the vertebral column bilaterally.
Cervical and lumbar regions bend anteriorly to form what type of curve?
Lordotic
passive rotation of the spine to the same side would shorten/lengthen the multifidi?
lengthen
What are the deepest muscles of the upper posterior neck?
Suboccipitals