1: Thoracic Wall Flashcards by Shonte Reed

Functions of the thorax

Protect vital thoracic/abdominal organs from forces
Resist the neg. internal pressure by elastic recoiled of the lungs
Provide attachments for and support the weight of limbs
Provide origin for some upper limb muscles

How well did you know this?

Not at all

Perfectly

What are the true ribs and they attach

1-7 , attach vertebrae to sternum

How well did you know this?

Not at all

Perfectly

What are the false ribs and they have

8-10, have cartilage attached to the cartilage of ribs superior

How well did you know this?

Not at all

Perfectly

What are the floating ribs and they have

Cartilages ending in the posterior abdominal wall musculature

How well did you know this?

Not at all

Perfectly

What forms the infrasternal angle

Cartilages of 7-10 joined

How well did you know this?

Not at all

Perfectly

Ribs and costal cartilages are separated by

Intercostal space

How well did you know this?

Not at all

Perfectly

Superior thoracic aperature is bounded by

1 thoracic vertebrae
1st pair of ribs
Superior border of manubrium

How well did you know this?

Not at all

Perfectly

Inferior thoracic aperature is closed by

The diaphragm

How well did you know this?

Not at all

Perfectly

Head of ribs articulate with

Inferior and superior facets of the body

How well did you know this?

Not at all

Perfectly

Tubercle of ribs articulate with

Facets of transverse processes

How well did you know this?

Not at all

Perfectly

Costal groove is located which portion of rib

Inferior border

How well did you know this?

Not at all

Perfectly

Thoracic outlet syndrome

When there’s compression or injury of vessels in the lower neck and chest

How well did you know this?

Not at all

Perfectly

Three parts of manubrium

Jugular mother
Clavicular notch
Notch for 1 cost cartilage

How well did you know this?

Not at all

Perfectly

Parts of sternum

Manubrium
Body
Xiphoid process

How well did you know this?

Not at all

Perfectly

Describe sternal angle

Slight angle between manubrium and body

How well did you know this?

Not at all

Perfectly

Prectus carinatum

Abnormal development causing sternum to protrude out

How well did you know this?

Not at all

Perfectly

Pectus excavatum

Sternum grows in

How well did you know this?

Not at all

Perfectly

Poland syndrome

No pectoral is muscle

How well did you know this?

Not at all

Perfectly

Scoliosis

Lateral curvature of the spine

How well did you know this?

Not at all

Perfectly

Costovertebral joint upper ribs

1-7 rotate

How well did you know this?

Not at all

Perfectly

Costovertebral joint lower ribs

8-10 glide

How well did you know this?

Not at all

Perfectly

Costovertebral joints ribs 11/12

Do not articulate with transverse processes

How well did you know this?

Not at all

Perfectly

Costchondral joints

Rib and costal cartilage, no movement

How well did you know this?

Not at all

Perfectly

Intercondral joints 6-9

Synovial plane joints

How well did you know this?

Not at all

Perfectly

Intercondral joints 9 and 10

Fibrous joints

Sternocostal joints

1st is cartilaginous | 2-7 are synovial

Intercostal muscles include

1. External intercostal 2. Internal intercostal 3. Innermost intercostal 4. Subcostal 5. Transversus thoracis

External intercostal attach superiorly to ______ and inferiorly to ________

Superior inferior border of rib above | Inferiorly superior border of ribs below

External intercostal muscle fibers run

Inferoanteriorly, down and in

Function of external intercostals

Elevate ribs during forced inspiration

Internal and inner most intercostal attach superiorly to ______ and inferiorly to ________

Superior: inferior border of rib above Inferior: superior border of rib below

Interousseous part of internal and innermost intercostals functions to

Depress the ribs during forced respiration

Internal and innermost intercostals are separated by

Neurvascular bundle

Subcostalis attach superiorly to ______ and inferiorly to ________

Superior: internal surface of lower ribs near their angles Inferior: superior border of ribs 2-3 below

Subcostalis fibers run

Inferoposterio, down and out, looks like its down and in but not!

Internal and innermost fibers run

Inferoposterio, down and out

Function of subcostalis

Depress ribs during forced respiration

Transversus thoracis attach superiorly to ______ and inferiorly to ________

Superior: on the posterior sternum Inferior: costal cartilages 2-6

Function of transversus thoracis

Depress ribs

Other muscles of the thoracic wall

1. Levator costae 2. Serratus posterior superior 3. Serratus posterior inferior

Function of levator costae

Elevate ribs

Function of serratus posterior superior

Elevate ribs

Function of serratus posterior inferior

Depress ribs

Muscles that elevate ribs

1. External intercostal 2. Levator costae 3. Serratus posterior superior

Muscle that depress the ribs

1. Internal 2. Inner most 3. Subcostalis 4. Tranversus thoracis 5. Serratus posterior inferior

Curse of intercostal nerve

Ventral rami is intercostal nerve, travels laterally and to front of abdomen

Branch off intercostal nerve

Lateral cutaneous nerve

Dermatomes

Area of skin supplied by nerves from a single root

Thoracentesis

Procedure to remove fluid from space between wall of chest and pleura of lungs

Nerve root block

Use for pain management

What part of ribs are elevated

Lateral most posts

What part of the thorax increases

The transverse diameter

The ribs are elevated at the neck especially at ribs

2-6

Elevation of ribs causes an increase in the

A-P diameter of the thorax = pump handle movement

Blood vessels that branch from aortic arch

1. Right brachiocephalic 2. Left common carotid 3. Left subclavian

Primary blood supply to the thoracic wall is derived from branches of the

Aorta and subclavian arteries

Internal thoracic artery is a branch of

R/L subclavian arteries

Intercostal spaces 2-6 are supplied by

Anterior intercostal arteries, branch of ITA

Intercostal space 7-10 are supplied by

Musculophrenic artery, branch of ITA

What supplies the intercostal 7-10

Anterior intercostal arteries

Posterior intercostal arteries are branches of the

Descending aorta

VAN is what and located where in intercostal space

Vain artery nerve, on the inferior border of the rib in the costal groove

Thoracentesis relation to spatial relationship of VAN

Process to remove fluid from chest cavity would want to place needle on superior border of rib to avoid puncture of the VAN