Lecture 11 Flashcards
(21 cards)
What is the Origin, Insertion and Movement of the External Intercostals
Origin: upper rib, tubricle
Insertion: rib below it
Movement: upward mevement, ribs moving upward
What is the Origin, Insertion and movement fo the Internal Intercostals
Origin: at rib 1 and connect to the rib below it
Insertion: into the carilogenus puart
Movement: elevating the rib cage and increase volumen in the thoracic cavity
What nerve innervates the levator costarum brevis and longus
intercostal spinal nerves
What is the origin of levator costarum brevis and longus
teh transverse processes of C7 and T1- T11
What is the insertion of levator costarum brevis
between the tubercle and angle of the rib
What is the insertion of levator costarum longus
two ribs below
What is the origin, insertion, course, job and innervation of Serratus posterior superior?
Origin: spinous processes of C7 and T1- T3
Insertion: angles of ribs 2-5
Course: down and laterally
Job: elevates ribs 2-5, impact on upper rib case
Innervation: intercostal nerve
What is the Origin, Insertion, Innervation, Course and Action of the Sternocleidomastoid?
Origin: mastoid process of temporal bone of the skull
Insertion: superior end of manubrium of sternum adn superior surace of sternal end of clavicle
Innervation: Accessory CN XI
Course: fibers run downward medially and anteriorly
Action: INHALATION, muscle for deep breathing (accessory), raises sternum and clavicle during deep breathing, Rotate the head contralaterally and downward
What is the Origin, Insertion and Job of the scalenes
Origin: transverse process of C2-C7, upper cervicla vertebrae
Insertion: anterior; 1st rib, medial 1st rib, posterior 2nd rib (at the tubercle)
Job: elevate Ribs 1 and 2
What are the parts of the Scalenes?
anterior
medial
posterior
What is the Origin, insertion, and motion of pectoralis major?
Origin: entire length of the sternum, some cartilage of the sternal portion of the clavicle ventrally
Insertion: scapula (cracoid process)
Movement: upward and a little bit laterally –> if scapula is fixated, when muscle (pectoralis minor) contracts then it lifts the ribs
What is the origin and insertion of serratus anterior
origin: ribs 1-9 on the lateral side
Insertion: scapula, the vertebral boarder, when the scapula is stabilized the serratus anterior contracts and pulls the ribs ou tand upward, measure of last resort for dep breathing (inhalation, supplemental)
What are the muscles that stabilize the scapulae?
levator scapulae
rhomboideus major and minor
trapezius
Describe the levator scapulae
one on each side of the body, cervical vertebrae down to the lower border of the scapulae
Describe the rohmoideus major and minor
pulls down and laterally from the spinous processes of the upper thoracic vertebrae down and laterally to the medial border of the scapula
Describe the Trapezius
spinous processes of cervical and thoracic vertebrae up and laterally to the acromium process of the scapulae and clavicle
What are the anterior thoracic muscles of inspiration?
external intercostals
internal intercostals
What are the posterior throacic muscles of inspiration?
levator costarum (brevis and longus)
serratus posterior superior
What are the accessory muscles of the neck for inspiration?
When are these muscles used?
sternoclidomastoid
scalenes
These muscles are used if the primary muscles of inspiration are not working however, they are not very effective
What are the Musclces of the Upper arem and Shoulder for inspiration?
Pectoralis Major
Pectoralis Minor
Serratus Anterior
What are the muscles that stabalize the scapulae?
Levator scapulae
Rhomboideus major
Rhomboideus minor
Trapezius
