vertebral column/trunk Flashcards
vertebral body
weight-bearing portion that tends to increase in size as one descend the spine
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intervertebral discs
fibrocartilaginous discs between adjacent bodies
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spinous process
projection that extends posteriorly from the union for 2 laminae
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transverse process
projection off the right and left side of each vertebrae
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articular facets
two superior and two inferior facets for articulation
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vertebral foramen/canal
formed from the vertebral arch and body, the foramen contains the spinal cord and its meningeal coverings
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cervical vertebrae
7 total, first section of spine
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atlas
C1
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axis
C2
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thoracic vertebrae
12 total, each articulating with a pair of ribs, 2nd section of spine
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costal facets
a site where a rib forms a joint with a top of a thoracic vertebrae
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lumbar vertebrae
5 total, large vertebrae to support the body’s weight
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sacrum
5 fused vertebrae, 2nd lowest section of vertebrae
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coccyx
4 total vertebrae, Co1 often not fused bt Co2-4 are fused, as a remnant of our embryonic tail
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ribs 1-7
true ribs; articulating with sternum directly
ribs 8-10
false ribs; articulating with costal cartilages of the ribs above
ribs 11-12
floating ribs that articulate with vertebrae only
sternum
long flat bone that forms anterior part of ribcage with ribs 1-7
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xiphoid process
small knob tht makes bottom part of sternum
(purple portion)
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ligamnetum nuchae
attaches at C7 to occipital bone; is the cervical extension of supraspinous ligament and is strong
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thoracolumbar fascia
a deep investing membrane with covers that deep muscles of the back of the trunk
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linea alba
connective tissue that runs down the midline of the abdomen; separates the left and right rectus muscles
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sternocleidomastoid origin
sternal head: manubrium; clavicular head: medial third of clavicle
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sternocleidomastoid insertion
mastoid process of temporal bone
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sternocleiodmastoid action
tilts head to one side (laterally flexes and rotates head so face is turned superiorly toward opp side; helps flex neck
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sternocleidomastoid strengthening
with resistance band on head and attached to wall, tilt head to opp side
sternocleidomastoid stretch
tilt head to one side and brace with hand
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splenius capitis origin
nuchal ligament, spinous process C7-T3
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splenius capitis insertion
mastoid process of temporal bone, occipital bone
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splenius capitis action
bilaterally: extends head; unilaterally: laterally flexes and rotates neck toward same side
rectus abdominis origin
pubic symphysis and pubic crest
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rectus abdominis insertion
xiphoid process and costal cartilages 5-7
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rectus abdominis action
flexes trunk and compresses abdominal viscera
rectus abdominis strengthening
laying on back with knees bent, do a crunch by flexing trunk and lifting shoulders off of ground toward knees
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rectus abdominis stretch
lay on stomach, hyperextend trunk
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transverse abdominis origin
internal surfaces of 7-12 costal cartilages, thoracolumnar fascia, iliac crest, and lateral third of inguinal ligament
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transverse abdominis insertion
linea alba with aponeurosis of interal oblique, and pecten pubis via conjoint tendon
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transverse abdominis action
compresses ad supports abdominal viscera
transverse abdominis strengthen
isometric core exercises (plank)
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internal oblique origin
thoracolumbar fascia, anterior two thirds of iliac crest, and lateral two thirds of inguinal ligament
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internal oblique insterion
inferior borders of 10th to 12th ribs, linea alba, and pubis via conjoint tendon inferior borders of 10th to 12th ribs, linea alba, and pubis via conjoint tendon
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internal/external oblique action
compresses and supports abdominal viscera; flexes and rotates trunk (ask heller about which does which)
internal and external oblique strengthening
laying on back with knees bent, lift upper body and do russian twists by holding weight in hands and twisting from one side to another
internal and external oblique stretch
stand and twist torso to one side, then opp side, bracing self with chair or wall
external oblique origin
external srufaces of 5th to 12th ribs
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external oblique insertion
linea alba, pubic tubercle, and anterior half of iliac crest
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erector spinae (iliocostalis, longissimus, spinalis) origin
posterior sacrum , iliac crest, and spinous processes of lower lumbar and sacral vertebrae
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iliocostalis insertion
angles of lower ribs and cervical transverse processes
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longissimus insertion
angles of lower ribs and cervical transverse processes
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erector spinae actions
extends and laterally bends vertebral column and head
erector spinae strengthening
dead lift with dumbbells
erector spinae stretching
stand straight and bend at hips to touch toes
longissimus insertion
between tubercles and angles of ribs, transverse processes of thoracic and cervical vertebrae, and mastoid process
spinalis insertion
spinous processes of upper thoracic and midcervical vertebrae
multifidus origin
sacrum, ilium, and transverse processes of T1-T12, and articular processes of C4-C7
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multifidus insertion
spinous processes of vertebrae above, spanning one or two segments
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multifidus action
stabilize spine
multifidus exercise
isometric core exercises (plank)
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