remedial 1 condensed

Question 1

what is the rhomboid major origin? insertion? and action?

Answer 1

ORIGIN: spinous processors of t2 to t5

INSERTION: medial border of the scapular below the spine of scapular

ACTION: it steadies the scapular, moves the scapular (inferior angle) inwards and upwards

Question 2

what are the rhomboids major and minor

Answer 2

muscles of the posterior thorax that act on the pectorial girdle

Question 3

what are the trapiezius muscles?
answer 3 things

Answer 3

-muscles of the posterior thorax that act on the pectorial girdle

-a flat triangular muscle covering the upper back, neck and shoulders

-3 sections upper, middle and lower depending on changing muscle fibre directions

Question 4

what is the origin, insertion and action of the trapezius muscle?

Answer 4

ORIGIN: occipital bone,
logamentum nuchae,
spinous processors t1 to t12.

INSERTION: the lateral third of the clavicle, acromian and scapular spine of scapular

ACTION: elevation and depression of scapular
rotation and retraction of scapular
extends the neck and stabilised the shoulder

Question 5

what are erector spinea?

Answer 5

not just 1 mucle but a group of three that run the entire length of the spine
from sacrum to skull
they cross all three areas cervical, thoratic and lumbar
1. iliocostal 2. longissimus 3. spinalis

Question 6

spinalis origin, insertion and action?

Answer 6

ORIGIN: spinous processors of first 2 lumbar and last 2 thoractic vertebrae

INSERTION: spinous processors of the upper thoratic vertebrae varying between t4 to t8

ACTION: extends the head

Question 7

iliocostalis origin, insertion and action?

Answer 7

ORIGIN: many and varied

INSERTION: many and varied

ACTION: extends and laterally flexes the spine
aids in rotation of the spine

Question 8

longissimum origin, insertion and action?

Answer 8

ORIGIN: many and varied

INSERTION: many and varied

ACTION: -extends and laterally flexes the spine
-aids in compression of ribs
-extends and unilaterally bends and turns head to the same side

Question 9

what is the levator scapulae?

Answer 9

• situated in the back side of the neck
• its a posterior muscle of the thorax and acts on the pectorial girdle

Question 10

levator scapular origin, insertion and action?

Answer 10

ORIGIN: transverse processors c1 to c4

INSERTION: superior (UPPER) angle medial border of the scapular

ACTION: elevates the scapular medially and upward (shrugging motion)
-bends neck ear to shoulder

Question 11

what is the supraspinatus

Answer 11

a rotator cuff muscle located at the back of the shoulder

Question 12

supraspinatus origin, insertion and action?

Answer 12

ORIGIN: all of the supraspinatus fossa (concave surface at the top of the scapular)

INSERTION: greater tubercal of the hummerous (long bone of the arm)

ACTION: assists the deltaoid in abducting (lifting) the arm

Question 13

gluteous maximum origin? insertion? and action?

Answer 13

ORIGIN:
- posterial gluteal line of the ilium
- posterial surface (lower) part of the sacrum and coccxy
-sacrotuberous ligament
INSERTION:
-iliotibial tract
-greater tronchater of the femur
ACTION:
-abducts lifts and extends the leg
-laterally rotates the hip

Question 14

piriformis origin? insertion? and action?

Answer 14

ORIGIN:
-from surface of the sacrum s1 s2 s3 s4
-and the anterior (towards from) sacral foramina
INSERTION:
-insertion into the upper border of the greater tronchater
ACTION:
-lateral rotator of the hip
-also aids in hip abduction and extension

Question 15

Gluteous medius origin? insertion? and action?

Answer 15

ORIGIN:
the gluteal surface of the ilium between the superior and middle gluteal lines
INSERTION:
the lateral (outer) surface of the greater tronchater of the femur
ACTION:
-abducts (lifts) the thigh
-anterior (front) portion rotates internally
-posterior (back) portion rotates externally

Question 16

what is the infraspinatus? what is its origin? insertion? and action?

Answer 16

it is a thick triangular shaped muscle of the shoulder girdles rotator cuff

origin: infraspinatus fossa on the posterial of the scapula

insertion: greater tubercal of the humerus

action: it laterally rotates the limb and stabalises the glenohumeral joint

Question 17

what is the latissmus dorsi? origin? insertion? and action?

Answer 17

it is one of the posterial shoulder joint muscles, a flat triangular muscle covering the lumbar and lower thoratic region.

origin: spinous processors t7 - t12,
L1-L5, crest of the sacrum and iliac crest and ribs 9 to 12

insertion: intertubercular of hummerus

action: hummerous medial rotation, abduction, extention and respiration

Question 18

what is the teres major? its origin? insertion? and action?

Answer 18

it is one of the muscles of the posterial shoulder joint.

origin: inferior angle (bottom angle) of the scapular

insertion: intertubercular groove of the hummerus

action: extension, abduction and medial rotation of the hummerus