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Trunk and Neck Muscles
Dr. Barnes
25
Anatomy
Professional
09/21/2010

Additional Anatomy Flashcards

 


 

Cards

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
describe complexus
Definition

-ventral to biventer

-arises from vervical vertebrae and inserts on muchal crest

Term
Describe splenius
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
Describe the scalenus m.
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

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