Spine & Thorax Flashcards
Rectus abdominis runs in what direction?
From the __________ cage to the pubic _______.
Rectus abdominis runs vertically ↕️ ↕️↕️↕️↕️↕️↕️↕️↕️↕️
From the rib cage to the pubic crest.
List the AOI of external oblique
Action: Unilaterally - laterally flex vertebral column to the same side
Rotate vertebral column to the same side
Bilaterally - Flex the vertebral column, compress abdominal contents
Origin: External surfaces of 5th-12th ribs
Insertion: Anterior part of iliac crest, abdominal aponeurosis to linea alba
List the AOI of the internal oblique
Action: Unilaterally - laterally flex vertebral column to same side
Rotate vertebral column to the same side
Bilaterally - Flex the vertebral column, compress abdominal contents
Origin: Lateral inguinal ligament, iliac crest and thoracolumbar fascia
Insertion: Internal surface of lower 3 ribs, abdominal aponeurosis to linea alba
Which abdominal muscle is mostly responsible in the aid of forced exhalation?
Transverse abdominis
There are ____ total vertebrae in the vertebral column, and the ____________ section of the vertebral column contains 12 vertebrae
24 total vertebrae
Thoracic section
Describe what the spinous processes look like on the back
They form a visible row of bumps down the center of the back and are designed as attachment sites for layers of muscles, ligaments and fasciae
The _______________________ section of the vertebral column is capable of the most movement
cervical vertebrae
What abdominal muscle gives the abs the “washboard”
Rectus abdominis
List the AOI of transverse abdominis
Action: compress abdominal contents
Origin: Lateral inguinal ligament, iliac crest, thoracolumbar fascia and internal surface of lower 6 ribs
Insertion: abdominal aponeurosis to linea alba
Does extension of thevertebral column shorten or lengthen the rectus abdominis?
Lengthen
Does C-1 have a spinous process?
No!
List the AOI of the diaphragm
Action: Draw down the central tendon of the diaphragm
Increase volume of the thoracic cavity during inhalation
Origin: Costal attachment - Inner surface of lower 6 ribs
Lumbar attachment - Upper 2 or 3 lumbar vertebrae
Sternal attachment- Inner part of xiphoid process
Insertion: Central tendon
What happens to the diaphragm’s central tendon during inhalation?
Central tendon pulls inferiorly
⬇️
Where are the intercostal muscles located?
the small, slender muscles between the ribs
List the AIO of the quadratus lumborum
Action: Unilaterally - Laterally tilt(elevate) the pelvis, assist to extend the vertebral column
Laterally flex the vertebral column to the same side
Bilaterally - Fix the last rib during forced inhalation & exhalation
Origin: Posterior iliac crest
Insertion: Last rib and transverse processes of 1st-4th lumbar vertebrae
What bone is directly deep to the clavicle?
The first rib of the first men
What muscles are deep to the thoracolumbar aponeurosis i the lumbar region?
(erector spinae group)
and or
(multifidi, rotatores, quadratus lumborum)
List the following muscles from deep to superficial
Erector spinae group
What is a common action of the erector spinae group of the vertebral column?
Laterally flex to the same side and extend
Do any of the muscles of the erector spinae attach to the skull?
if so, which one?
Yes,
Longissimus capitis insertion to the mastoid process of temporal bone
What muscle is the “hip hiker”?
Quadratus lumborum
Isis quadratus lumborum considered an abdominal muscle?
If so, what is unique about its location?
Yes, it is the deepest muscle of the abdomen, but it’s located on the posterior surface of the thorax
List the AOI of splenius capitis
Action: Rotate the head & neck to the same side
Laterally flex the head & neck to the same side
Bilaterally extend the head and neck
Origin: Capitis: Inferior 1/2 ligamentum nuchae & spinous processes of C7-T4
Cervicis: spinous processes of T3-T6
Insertion: Capitis: Mastoid process & lateral portion of superior nuchal line
Cervicis: Transverse processes of C1-C3
Where is splenius capitis located relative to trapezius and SCM?
It is deep to the traps and SCM.
What group of muscles is deep to the upper border of the trapezius?
Splenius muscles
What group of muscles run in a diagonal direction to the vertebral column?
transversospinalis,
⭐️multifidi, rotatores⭐️
The ____________ are the only muscles that lie across the posterior surface of the sacrum
MULTIFIDI
What muscle group can be located in the lamina groove of the thoracic and lumbar vertebrae?
Transversospinalis group 🙂
List the actions of the rotatores and multifidi?
Unilaterally rotate the vertebral column to opposite side
Bilaterally extend the vertebral column
