Deep Back Muscles and Thorax

0.0(0)
Studied by 0 people
call kaiCall Kai
Locked
learnLearn
examPractice Test
spaced repetitionSpaced Repetition
heart puzzleMatch
flashcardsFlashcards
GameKnowt Play
Card Sorting

1/19

encourage image

There's no tags or description

Looks like no tags are added yet.

Last updated 8:44 AM on 9/23/26
Name
Mastery
Learn
Test
Matching
Spaced
Call with Kai
Chat

No analytics yet

Send a link to your students to track their progress

20 Terms

1
New cards

levator scapulae

  • origin: transverse processes of C1 to C4

  • insertion: superior angle of the scapula

  • action: elevates the scapula; rotates the scapula at the glenohumeral joint (raises the shoulder blade)


<ul><li><p>origin: transverse processes of C1 to C4</p></li><li><p>insertion: superior angle of the scapula</p></li><li><p>action: elevates the scapula; rotates the scapula at the glenohumeral joint (raises the shoulder blade)</p></li></ul><p></p>
2
New cards

spinalis

  • origin: spinous processes of T11 to L2

  • insertion: spinous processes of T2 to T8

  • action: bilaterally extends the back and unilaterally flexes the back to the ipsilateral side


<ul><li><p>origin: spinous processes of T11 to L2 </p></li><li><p>insertion: spinous processes of T2 to T8 </p></li><li><p>action: bilaterally extends the back and unilaterally flexes the back to the ipsilateral side </p></li></ul><p></p>
3
New cards

longissimus

  • origin: illiac crest, sacrum, and lumbar and sacral spinous processes

  • insertion: transverse processes at higher levels and the medial aspect of the ribs

  • action: bilaterally extends the back and unilaterally flexes the back to the ipsilateral side with more leverage than spinalis since its farther from the midline


<ul><li><p>origin: illiac crest, sacrum, and lumbar and sacral spinous processes</p></li><li><p>insertion: transverse processes at higher levels and the medial aspect of the ribs</p></li><li><p>action: bilaterally extends the back and unilaterally flexes the back to the ipsilateral side with more leverage than spinalis since its farther from the midline </p></li></ul><p></p>
4
New cards

iliocostalis

  • origin: illiac crest

  • insertion: angles of the ribs

  • action: bilaterally extends the back and unilaterally flexes the back to the ipsilateral side


<ul><li><p>origin: illiac crest</p></li><li><p>insertion: angles of the ribs</p></li><li><p>action: bilaterally extends the back and unilaterally flexes the back to the ipsilateral side </p></li></ul><p></p>
5
New cards

erector spinae group

spinalis, longissimus, and iliocostalis (straightens the spine)

<p>spinalis, longissimus, and iliocostalis (straightens the spine)</p>
6
New cards

rotatores breves

  • origin: transverse processes

  • insertion: spinous process one level higher

  • action: bilaterally extends the spine and unilaterally rotates the spine to the contralateral side


<ul><li><p>origin: transverse processes </p></li><li><p>insertion: spinous process one level higher</p></li><li><p>action: bilaterally extends the spine and unilaterally rotates the spine to the contralateral side </p></li></ul><p></p>
7
New cards

rotatores longus

  • origin: transverse processes

  • insertion: spinous process 2 levels higher

  • action: bilaterally extends the spine and unilaterally rotates the spine to the contralateral side


<ul><li><p>origin: transverse processes</p></li><li><p>insertion: spinous process 2 levels higher</p></li><li><p>action: bilaterally extends the spine and unilaterally rotates the spine to the contralateral side </p></li></ul><p></p>
8
New cards

multifidus

  • origin: transverse processes

  • insertion: spinous processes 2-4 levels higher

  • action: bilaterally extends the spine and unilaterally rotates the spine to the contralateral side


<ul><li><p>origin: transverse processes </p></li><li><p>insertion: spinous processes 2-4 levels higher</p></li><li><p>action: bilaterally extends the spine and unilaterally rotates the spine to the contralateral side </p></li></ul><p></p>
9
New cards

semispinalis

  • origin: transverse processes

  • insertion: spinous processes 4-6 levels higher

  • action: bilaterally extends the spine and unilaterally rotates the spine to the contralateral side


<ul><li><p>origin: transverse processes</p></li><li><p>insertion: spinous processes 4-6 levels higher </p></li><li><p>action: bilaterally extends the spine and unilaterally rotates the spine to the contralateral side </p></li></ul><p></p>
10
New cards

the transversospinalis group

rotatores breves, rotatores longus, multifidus, and semispinalis

<p>rotatores breves, rotatores longus, multifidus, and semispinalis </p>
11
New cards

right lung

  • two fissures (oblique and horizontal)

  • superior, middle, and inferior lobes


12
New cards

left lung

  • one fissure (oblique)

  • superior and inferior lobe

  • cardiac notch makes room for the heart


13
New cards

main bronchus

  • right is wider, shorter, and steeper than the left

  • left is narrower, longer, and more horizontal since it has to pass under the aortic arch


<ul><li><p>right is wider, shorter, and steeper than the left </p></li><li><p>left is narrower, longer, and more horizontal since it has to pass under the aortic arch </p></li></ul><p></p>
14
New cards

carina

ridge where the trachea splits into the 2 main bronchi

<p>ridge where the trachea splits into the 2 main bronchi </p>
15
New cards

visceral pleura

the layer fused directly to the lung surface and can’t be peeled off the lung

<p>the layer fused directly to the lung surface and can’t be peeled off the lung </p>
16
New cards

parietal pleura

the layer lining the thoracic wall, diaphragm, and mediastinum

<p>the layer lining the thoracic wall, diaphragm, and mediastinum </p>
17
New cards

pleural cavity

potential space between visceral and parietal pleura containing a thin film of serous fluid that lubricates lung movement and keeps the lung apposed to the chest wall

<p>potential space between visceral and parietal pleura containing a thin film of serous fluid that lubricates lung movement and keeps the lung apposed to the chest wall </p>
18
New cards

pleural recesses

extra potential space where the pleura fold back on itself in areas the lung doesn’t fully fill even on a deep breath

<p>extra potential space where the pleura fold back on itself in areas the lung doesn’t fully fill even on a deep breath </p>
19
New cards

diaphragm

  • origin: inferior margins of the rib cage

  • insertion: central tendon of the diaphragm

  • action: contracts to flatten the dome and draw the central tendon inferiorly, increasing thoracic volume for respiration


<ul><li><p>origin: inferior margins of the rib cage </p></li><li><p>insertion: central tendon of the diaphragm </p></li><li><p>action: contracts to flatten the dome and draw the central tendon inferiorly, increasing thoracic volume for respiration </p></li></ul><p></p>
20
New cards

serratus posterior inferior

  • origin: spinous processes of T11 to L2

  • insertion: ribs 8-12

  • action: depresses the ribs forcing air out during forceful exhalation


<ul><li><p>origin: spinous processes of T11 to L2 </p></li><li><p>insertion: ribs 8-12 </p></li><li><p>action: depresses the ribs forcing air out during forceful exhalation </p></li></ul><p></p>