IBHRE CEPS Anatomy and Physiology Questions and Correct Answers the Latest Update
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Module
IBHRE CEPS
Institution
IBHRE CEPS
Pericardium
Protective sac surrounding heart
Fibrous pericardium and Serous Pericardium
Two layers of the pericardium
Fibrous Pericardium
Layer of pericardium, tough outer sheath, adheres to the sternum and diaphragm to
stabilize heart
Serous Pericardium
Layer of pericardium, consistin...
Great cardiac vein, Middle cardiac vein, and posterolateral vein
✓ Largest cardiac veins
Vein of Marshall
✓ Oblique vein of the LA, ends near the opening of the great cardiac vein
Myocytes
✓ muscle cells in myocardium, initiate and conduct electrical impulses
✓ - branch and interlock, separated by discs
✓ - shorten when stimulated
✓ - each has nucleus and myofibrils
Myofibriles
✓ Parallel strands of tissue, subdivided into sarcomeres
Sarcomere
✓ Basic contractile unit of the heart
✓ - stimulated: release calcium from sarcoplasmic reticulum, actin and myosin slide
over each other to shorten
Apex
✓ Heart contraction is a wringing twisting motion of the myocardium that starts at the
___.
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