9/2 Anatomy Lab Flashcards
around the nipple
areola
the ligaments in the superior posterior of the breast
suspensory ligaments
posterior the breast
retromammary space
at the top of the sternum, the “shield” shaped bone
manubrium
bottom of the manubrium rib 2 connection
Sternal angle
xiphoid process
inferior the sternal body.
the main bone of the anterior thoracic wall
sternal body
true ribs
ribs 1-7
false ribs
ribs 8-10
floating ribs
ribs 11-12
the non-bone connection from rib to sternum
costal cartilage.
name the muscles of the anterior thoracic wall from superior to inferior
Deltoid muscles; pectoralis major; pectoralis minor; subclavius muscle; serratus anterior muscle
the groove cleft between the shoulder and the chest
Deltopectoral groove (cephalic vein is here)
describe the branches off of the thoracoacramial trunk of the axial artery
Pectoral; Deltoid; Acromial; Clavicular.
Name the intercostal muscles from the superior to the inferior
External intercostal muscles and membrane (diagnal towards the belly button); Internal intercostal muscles and membrane (towards the chin). Innermost intercostal muscles.
what three structures occupy the intercostal groove?
Intercostal vein; Intercostal artery; Intercostal nerve.
attach the posterior surface of the sternum to the costal cartilages of the mid to lower true ribs and functions to depress the costal ends of the ribs.
Transversus thoracis muscles
arise from the lower ribs near the angles and ascend 2-3 ribs to insert again near the angle of the rib. They are thin slips of muscles deep to the intercostal vessels and nerve and blend with the innermost intercostal muscles. They are more prominent in the lower aspect of the rib cage and assist in pulling the ribs downward.
subcostal muscles
name the layers of the pericardial sac from the external to the internal:
Fibrous paricardium; Pariatal paricardium; Visceral paricardium. The pariatal and visceral paricardium together are serous pericardium.
Serous-lined space located posterior to the ascending aorta and pulmonary trunk, anterior to the superior vena cava, and superior to the left atrium. As the heart tube folds on itself during development, the transverse sinus marks the separation between the venous end and the arterial end of the heart tube.
Transverse pericardial sinus
Serous-lined blind cul-de-sac bordered by the 4 pulmonary veins and the inferior vena cava. The posterior wall of the oblique sinus is the parietal pericardium lining the posterior aspect of the fibrous sac, and the anterior wall of the sinus is the visceral pericardium covering the posterior surface of the heart.
Oblique pericardial sinus
anterior descending branch of cervical plexus; arise: C3-C5; enters mediastinum & thorax on route to lung; supplies diaphragm
phrenic nerve
drain blood from pericardium; course with phrenic n. & pericardiacophrenic a. lateral to heart; drain into internal thoracic v.
pericardiacophrenic vessels
arise: right aortic sinus; runs: coronary sulcus; supplies r. atrium, ventricles/intervent. septum (parts), SA/AV nodes; terminates as PDA
right coronary artery