Ribs Flashcards
(38 cards)
classification of ribs (T/F)
true: 1 - 7
false: 8 - 10 (connected by cartilage to cart of rib 7)
floating ribs: 11 - 12
classification of ribs (typical/atypical)
typical (3-9): head, neck, tubercle, angle, shaft
atypical: 1 (greatest curve, shortest, no angle/groove, 1 articular facet); 2 (like 1, not as flat, 2 articular facets); 10 (only 1 articular facet); 11/12 (no neck/tubercle, 1 articular facet, no costotransverse joint)
radiate ligament
attach rib head to vertebral body
superior costotransverse ligament
connect neck of rib to superior transverse process
costotransverse ligament
connect rib to same/lower transverse process
primary rib motion
1-5 = pump handle 6-10 = bucket handle 11-12 = caliper
sternal articulations
1: manubrium
2: angle of Louis
3-6: sternal body
7: xiphoid/body
principle muscles of inspiration
diaphragm
external intercostals
interchondral parts of internal intercostals
accessory muscles of inspiration
sternocleidomastoid scalenes (anterior, middle, posterior) \+ subclavius, pectoralis minor, serratus anterior, latissimus dorsi
Diaphragm (O/I/N/A)
O: ribs 7-12, L1-3 (VB/IVD), ziphoid process
I: central tendon
N: phrenic (C3-5)
A: tidal breathing
external intercostals (O/I/N/A)
O: lower margin of rib
I: upper margin of next lower rib
N: 1-11 intercostal nerves
A: raise ribs
sternocleidomastoid (O/I/N/A)
O: munubrium, medial 1/3 of clavicle
I: mastoid process, post nuchal line
N: accessory nerve
A: (u) STRA (b) extend head, respiration
scalenes - anterior (O/I/N/A)
O: TP of C3-6
I: Rib 1
N: cervical and brachial plexus (C3-6)
A: raise upper ribs
scalenes - middle (O/I/N/A)
O: TP of C3-7
I: Rib 1
N: cervical and brachial plexus (C3-6)
A: raise upper ribs
scalenes - posterior (O/I/N/A)
O: TP of C5-7
I: Rib 2
N: cervical and brachial plexus (C3-6)
A: raise upper ribs
subclavius (O/I/N/A)
O: Rib 1
I: inferior surface of clavicle
N: nerve to subclavius (C5, 6)
A: stabalizes clavicle in sternoclavicular joint
pectoralis minor (O/I/N/A)
O: ribs 3,4,5
I: coracoid process
N: medial pectoral nerve (C8, T1)
A: draw scapula down, rotate glenoid inferiorly + respiration
serratus anterior (O/I/N/A)
O: ribs 1-9 (main 6-8)
I: (medial border of scapula)
N: long thoracic nerve (C5-7)
A: (s) lower raised arm; (whole) draw scapula laterally forward, elevate ribs w/ fixed shoulder; (i) rotate scapula laterally
latissimus dorsi (O/I/N/A)
O: SP T7-12, scapulas, ribs 9-12, iliac crests
I: humerus (intertubercular groove)
N: toracodorsal nerve (C6-8)
accessory muscles of expiration
internal intercostals (no intracostal part) rectus abdominus transversus abdominus ex/internal obliques serratus posterior transversus thoracis subcostal muscle
internal intercostals (O/I/N/A)
O: lower margin of rib
I: upper margin of next lower rib
N: intercostal nerves 1-11
A: lower ribs, stabalize chest wall
rectus abdominus (O/I/N/A)
O: pubis/pubic tubercle/ant pubic symphysis
I: cart of ribs 5-7, xiphoid
N: intercostal nerves T5 - T12
A: flex trunk, stabilize pelvis
transversus abdominus (O/I/N/A)
O: 7-12 costal cart, thoracolumbar fascia, iliac crest, ASIS, iliopsas fascia
I: linea alba, pubic crest
N: intercostal n T7-12, iliohypogastric n, ilioinguinal n
A: (u) trunk RT (b) compress abdomen
external oblique (O/I/N/A)
O: rib 5-12
I: linea alba, pubic tubercle, iliac crest
N: intercostal n T7-12
A: (u) trunk STRA (b) compress abs, stable pelvis
