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Heart (Sulcus (Anterior IV (between frontal lt/rt ventricle), Posterior IV…
Heart
Sulcus
Anterior IV
between frontal lt/rt ventricle
Posterior IV
between rear lt?rt ventricle
Coronary
between atrium and ventricles
Fatty grooves exterior heart
Membranes(pericardium)
Pericardial cavity
serous filled lubricating cavity
Visceral pericardium
serous fluid secreting mesothelium
Parietal pericardium
Fused to fibrous pericardium
Fibrous
dense fibrous connective tissue
maintains protection and position.
circulation
Rt atrium>rt ventricle>pulmo trunk>pulmo artery>lungs>capillaries.
Capillaries>bilat pulmo veins>Lt atrium>lt ventricle>aortia
Aortic arch>arteries>arterioles>capillaries
Venules>veins>sup & inf vena cava
Septums
Interatrial
divides left and right atrium.
Primum
flap between foramen
closes at birth
Interventricular
divides left and right ventricles
Atrioventricular
Divides atriums from ventricles
Muscles
Myocardium
Middle cardiac muscle
Endocardium
Inner layer
Endothelium(simple squamous)
line blood vessels
Secretes endothelins
vasoconstrictors
Epicardium (visceral)
outerlayer
Vessels
Ateries
Pulmonary trunk
Left pulmonary
Right pulmonary
Aorta
Brachiocephalic trunk
Left Common carotid
Left Subclavian
Right coronary
Marginal
Supplies rt ventricle
Posterior interventricular(iv)
supplies Apex, IV septum, bilat ventricles
Left Conorary
Anterior interventricular
LAD
major artery
Circumflex
Veins
Right Pulmonary
Returns +O2 to lt atrium
Coronary Sinus
Return -O2 to rt atrium
Left Pumonary
Returns +O2 to lt atrium
Structure
Atriums
Right
Posterior vena cava
receives blood from inferior diaphram
Sinoatrial (SA)node
sinus rhythm
Superior vena cava
receives blood superior diaphram
Coronary sinus
receives blood from coronary veins
receives deoxygenated blood
Fossa Depression
fetal opening between atriums
Atrioventricular (AV)node
Left
left pulmonary veins
right pulmonary veins
Receives oxygenated blood
Ventricles
Right
C
Tricuspid
Left
Lavita Smith TCC APII