Term
1) Where are Epaxial Muscles located?
2) What are there innevations? |
|
Definition
1) dorsal to transverse processes
2) dorsal branches of spinal nerves
|
|
|
Term
What are the systems of Epaxial muscles?
Describe each systems location. |
|
Definition
1) Transversospinalis (most dorsal)
2) Longissimus System (middle, longest)
3) Iliocostalis System (most ventral)
|
|
|
Term
| What are the major muscles that make up the transversospinalis system? |
|
Definition
semispinalis capitis
spinalis et. semispinalis |
|
|
Term
Where is the semispinalis capitis located?
Its divided into seperate parts, what are they? |
|
Definition
Deep to the splenius, extends from the thoracic veterbrae to the head
Biventer cervicis
Complexus |
|
|
Term
| What are the major muscles that make up the longissimus system? |
|
Definition
Longissimus thoracis et lumborum
Longissumus cervicis
Longissumus capitis |
|
|
Term
| Describe the biventer cervicis |
|
Definition
-dorsal to complexus has tendionus intersections
-arises from thoracic vertebrae and inserts on caudal surface of skull |
|
|
Term
|
Definition
-ventral to biventer
-arises from vervical vertebrae and inserts on muchal crest |
|
|
Term
|
Definition
-large muscle
-dorsolateral surface of neck
-cranial border of the thoracolumbar fascia, the spines of T1-3, enitre median raphe of neck
-inserts on nucheal crest and mastoid part of temportal bone |
|
|
Term
What are the major muscles that make up the iliocostalis
system? |
|
Definition
Iliocostalis lumborum
Ilicostalis throracis |
|
|
Term
Describe the location of the iliocostalis lumborum
|
|
Definition
| wing of ilium to transverse processes of the lumbar vertebrae and last 4/5 ribs |
|
|
Term
| Describe the location of the iliocostalis thoracis |
|
Definition
long,narrow m.
12th rib to transverse process of C7 |
|
|
Term
| Describe the location of the longissimus thoracis et lumborum |
|
Definition
| crest and medial surface of wing of ilium to supraspinous ligament and the spines of the lumbar and thoracic vertebrae |
|
|
Term
| Describe the location of the longissimus cervicis |
|
Definition
| lie in the angle b/t the cervical and thoracic vertebrae to the transverse processes of the last few cervical vertevrae |
|
|
Term
| Describe the location of the longissimus capitis |
|
Definition
| T1-3 to mastoid part of the temporal bone |
|
|
Term
1) Where are Hypaxial Muscles located?
2) What are there innevations? |
|
Definition
1) Ventral to transverse processes
2) ventral branches of spinal nerves
|
|
|
Term
| What are the major hypaxial muscles? |
|
Definition
Longus capitus m.
Longus colli m.
Scalenus m. |
|
|
Term
| Describe the longus capitus m. |
|
Definition
| 6th cervical vert. to occipital bone |
|
|
Term
| Describe the longus colli m. |
|
Definition
| 1st cervical to 6th thoracic vertebrae |
|
|
Term
|
Definition
medial part- 4-5th cervical vert. to 1st rib
dorsal part- 4-5th cervical vert. to 8th rib |
|
|
Term
Describe the serratus dorsalis m.
Describe its parts |
|
Definition
two parts
serratus dorsalis cranialis: dorsal surface of cranial thorax
(lifts ribs for inspiration)
serratus dorsalis caudalis: dorsal surface of caudal thorax
(draws the last three ribds caudally in expiration) |
|
|
Term
| Describe external intercostal m. |
|
Definition
there are 12 EIC on each side
fibers run caudoventrally
function: respiration by drawing the ribs together, fexation of the rib cage |
|
|
Term
| describe the intercostal m. |
|
Definition
fibers run cranioventrally
function to draw the ribs together |
|
|
