Thoracic Osteology And Wall Structure Flashcards
How many thoracic vertebrae?
12
How many pairs of ribs and their costal catilages?
12
What comprises the superior boundary?
First thoracic vertebrae, first pair of ribs and costal cartilages, and manubrium
What comprises the inferior boundary?
12th thoracic vertebra, 12th pair of ribs and costal cartilages, and xiphisternal joint
Manubrium articulates with __ aspect of body of sternum
Superior
What joint type is the manubriosternal joint
Symphysis joint
Xiphoid process marks level of dermatome _?
6
Body of sternum made up of how many fused sternebrae?
4
Vertebrosternal ribs numbers
1-7
Vertebrochondral ribs numbers
8-10
Vertebral ribs
11-12
Costa = __ + __ ?
Rib bone + its cartilage
What are the parts of a rib?
Head, neck, tubercle, shaft, and costal cartilage
The scalene tubercle is for insertion of what muscle?
Scalene anterior muscle
The shallow groove for subclavian vein is __ to tubercle
Anterior
Shallow groove for subclavian artery is __ to tubercle
Posterior
What is the first spinous process to be palpated
Vertebra prominent (C7)
T/F: tubercle articulates with transverse process of same number vertebra
T
Sternal angle marks rib number
2
Aortic valve heart sound can be heard at the __ intercostal space of __ side
2nd intercostal space on right side
Pulmonary valve heart sound can be heard at __ intercostal space along the __ side
Second an left side
Scapular spine is at level of __ rib and __ vertebra
3rd rib and T2
Costal margin superior part is marked by the __ cartilage
7th
Costal margin inferior part is marked by the __ cartilage
10th
What is important in CPR?
Infrasternal angle
Vertical line running through the inferior angle of the scapula
Scapular line
Anterior axillary line is formed by lower border of __
Pectoralis major
Posterior axillary line formed by tendon of __ muscle
Latissimus dorsi muscle
Clavicular and scapular regions of upper thorax innervation
C3-4
Upper thorax innervation
T1-5
Xiphoid process region innervation
T6
Lower parts of thorax and lateral/anterior abdominal wall innervation
T7-12
Cephalic vein drains into the __ vein
Axillary vein
Basilic vein continues as the __ vein
Axillary vein
Hands in front pocket is synonymous with what muscle layer
External intercostals
Hands in back pocket is synonymous with what muscle layer
Internal intercostals
What muscle layer has incomplete layers with fibers arranged in a more horizontal direction?
Innermost intercostals
Four of five slips that originate from the inferior sternum and extend superolaterally to internal surface of upper ribs is what muscle layer?
Transversus thoracis
What is the fibrous tela subcutanea?
CT layer surrounding the entire mammary gland
What is the fatty tela subcutanea?
Adipose tissue deep to fibrous layer
What is the suspensory ligament of Cooper?
Bundles of collagen fibers in dermis and hypodermis
Nipple, areola, and lactiferous lobules drain where?
Subareolar lymph node
75% of lymph from breast drain here
Axillary lymph nodes (pectoral, central, apical)
Remaining lymph (25%) drain here
Parasternal and abdominal lymph nodes
Perilobular and interlobular lymphatic vessels drain into…
Subareolar plexus
Subareloar plexus drains into…
Lateral lymphatic trunk and medial lymphatic trunk
Lateral lymphatic trunk and medial lymphatic trunk drain into…
Pectoral group of axillary lymph nodes
Pectoral group of axillary lymph nodes drain into…
Subclavian lymphatic channels