Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.


Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.

Remove ads
Don't know
Know
remaining cards
Save
0:01
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
Retries:
restart all cards




share
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Anatomy - Thorax

Thorax Comprehensive Exams

QuestionAnswerAdditional Information
True Ribs first 7 ribs, attached directly to sternum through own costal cartilages
Typical Ribs 3rd to 9th ribs; head -> wedge shaped w/ 2 facets separated by crest of head, facet articulate with corresp. vert. & superior to it. Neck->connects head w/ shaft at level of tubercle; tubercle & shaft
manubrium lies @ level of bodies of T3 & T4 vert; thickest & widest of 3-part sternum; 1st rib fuses w/lateral border of manubr. (sternocostal synchondrosis); angle of Louis @ 2nd cost. cart. @ level of IVD <-> T4 & T5
Xiphoid Process lies @ T10 vert; cartilaginous in young people but ossified older than 40 yrs old, may fuse w/sternal body in elderly; important landmark: inferior limit of central thorax of inferior thor. aperture; midline marker for liver & inferior border of heart
Serratus Posterior Superior lies @ junction of neck & back; PA: nuchal lig, sp. proc. C7-T3 vert; DA: superior borders of 2-4 ribs; INN: 2nd-5th intercost. nrvs; ELEVATES superior 4 ribs, raises sternum & increases diameter of thorax
Serratus Posterior Inferior lies @ junction of thorac. & lumbar regions; PA: sp. proc. of T11-L2 vert; DA: inferior borders of 8-12 ribs near angles; INN: ventral rami of 9-12 t/spinal nrvs; DEPRESS RIBS preventing superior displacement by diaphram
External Intercostals muscles of inspiration - elevates ribs; 11 pairs; occupies between tubercles of ribs posteriorly to costochondral junctions anteriorly; run inferanteriorly from rib above to below; continuous w/ extern. oblique
Internal Intercostals muscles of expiration; 11 prs run deep to & at right angles to external intercostals, inferoposterior from floors of costal grooves to superior borders of ribs inferior to them; continuous w/ internal oblique muscles
Pulmonary Veins 2 on each side, carries oxygenated (arterial) blood from lungs to left atrium;
Left Coronary Artery arise from left aortic sinus of ascending aorta & passes <-> left aurical & pulm trunk; @ left end of coronary groove LCA splits into 2 branches -> anterior interventric. branch & circumflex branch (blank)
Coronary Sinus main vein of heart; receives anterior interventric. vein or GREAT CARDIAC VEIN at left & posterior intervent. (middle cardiac vein) & small cardiac veins at right. (blank)
Superior Vena Cava (SVC) returns blood from all structure superior to diaphragm except lungs & heart; passes infer. & ends @ level of 3rd costal cart. & enters right atrium; SVC lies in right side of superior mediastinum, anterolateral to trachea & posterolateral to ascend. aorta (blank)
External Oblique largest & most superficial of 3 flat anterolat. abdom. muscles; muscles anterolateral, aponeurosi anterior; direction of "fingers in pant pocket"; as muscle fibres pass infermedially, becomes aponeurotic approx. @ mid-clav. line & decussate @ linea alba medial to pubic tubercle, external oblique apon. attaches to pubic crest; inferiorly, inferior margin of apon. thickens & folds back to form inguinal lig. (<-> ASIS & pubic tubercle)
Transverse Abdominal innermost of 3 flat abdom. muscles (tranversomedial fibre direction) except for inferior ones that run parallel to internal oblique; fibres end in apon. contributing to formation of rectus sheath look up attachments
Psoas Major long thick fusiform; lies lateral to lumbar vert.; passes inferolat. deep to inguinal lig. to lesser trochanter of femur PA: transverse proc. of lumbar vert, sides of bodies of T12-L5 & intervening IVD; DA: strong tendon to lesser trochanter; INN: Lumbar plexus via ventral branches of L2-L4 nrv
Quadratus Lumborum thick musc. sheet in poster. abdom. wall; lies adjacent to lumbar transv. process; crossed by LATERAL ARCUATE LIG. subcostal nerve passes posterior to lig & runs inferolaterally on QL; branches of lumbar plexus run inferiorly on anterior surface of muscle
Ilium superior, flattened, fan-shaped part of hip bone; ALA is body & handle; BODY helps form acetabulum; iliac crest is rim of fan follows contour of ALA <-> ASIS & PSIS; anterior concave part forms iliac fossa (blank)
Ischium body & ramus; helps to form acetabulum & ramus forms obturator foramen; large posteroinferior protuberance is ischial tuberosity; small pointed posterior projection near junction of ramus & body is ishial spine concavity <-> ischial spine & tuberosity is lesser sciatic notch; larger concavity is greater sciatic notch superior to ischial spine & is formed in part of ilium
Greater Pelvis pelvis major or false pelvis; superior to pelvic inlet; location of abdom. viscera (ileum & sigmoid colon); bounded by abdom. wall anteriorly, iliac fossae posterolater & L5 & S1 vert posteriorly; cavity of greater pelvis is inferior part of abdom. cavity (blank)
Sacroiliac joints sacrum suspended <-> iliac bones & attached by interosseous & SI lig.; mvmt of slight gliding & rotary; sacrotuberous & sacrospinous lig. only limit upward mvmt of inferior end of sacrum thus provide resilience to SI region when weight increases in vert. (blank)
Lateral Pelvic Wall formed by hip bones & obturator foramen, closed by obturator membrane; obturator internus muscle cover & pad most of lat. pelv. wall; medial to muscle is obturator nrv & internal iliac vessels obturator internus pass posteriorly from lesser pelvis thru lesser sciatic foramen & turns sharply laterally to attach to greater trochanter of femur
posterior pelvic wall formed by sacrum & coccyx, adjacent parts of ilia & SI jts. Piriformis cover & pad wall posterlaterally. Each muscle leaves lesser pelvis thru greater sciatic foramen to attach to greater trochanter. Sacral plexus are medial to piriformis (blank)
pelvic floor formed by funnel-shaped pelvic diaphragm (levator ani & coccygeus); streches <-> pubis anter. & coccyx poster. & from lateral wall to other levator ani attached to internal surface of lesser pelvis; 3 parts -> pubococcygeus, puborectalis & iliococcygeus; forms muscular sling supporting abdominpelvic viscera
Created by: LInda_J