Heart (1) Flashcards
1
Q
Mediastinum
A
- between two pulmonary cavities (the middle septum filled by tissue)
- covered on both sides by mediastinal pleura
- tissues within are: untied by loose connective tissue + infiltrated by fat
2
Q
Tissues within Mediastinum
A
- # untied by loose connective tissue + infiltrated by fatthis allows for changes in movement + volume + pressure
3
Q
Pericardium
A
- double-walled, fiberoserous sac ==> encloses the heart
- tough outer fibrous pericardium stabilizes + prevents over-dilation
4
Q
Serous Pericardium
A
lies within + directly covers heart
- visceral + parietal layers
5
Q
Pericardial Activity
A
space filled with fluid –> allows heart to beat in frictional environment
6
Q
Right side of heart…
A
receives and sends DEOXYGENATED BLOOD
7
Q
Left side of heart…
A
receives and sends OXYGENATED BLOOD
8
Q
3 Tissue Layers of the Heart
A
- ENDOCARDIUM
- thin internal layer for protection - MYOCARDIUM
- thick middle layer for contraction - EPICARDIUM
- thin external layer for lubrication
9
Q
Which tissue layer does the heart mostly consist of?
A
MYOCARDIUM
