Duffy Lecture 4 Flashcards
(49 cards)
When does blood go into the coronary arteries
During diastole
What does MI do to EF
MI decreases EF
Branches of left coronary artery & supply
Anterior interventricular & circumflex SUPPLIES: LA LV Part of RV IV septum including conducting tissue
Branches of circumflex artery
Sinoatrial branch (40%) and marginal branch
Branches of right coronary artery and supply
Sinoatrial branch (60%)
Marginal branch
AV nodal branch
Posterior interventricular branch (85%)
SUPPLIES:
- RA
- RV
- Part of AV septum
- Part of LV
What does the anterior cardiac vein drain into
directly into RA
What do the thesbian veins (venae cordis minimae) drain into
Into myocardium and then into atria and ventricles
Contributions to coronary sinus
Small Middle and Great vein
Definition of Syncytium
Every cell is directly in contact with another so the beating of 1 cell moves electrical activity to the next
What supplies the IV septum
Left coronary artery => MI may impact conductance as bundles are here
What does the ANS regulate
HR Force of contraction CO
What nerve is responsible for parasympathetic innervation
Vagus (cardiac plexus) LONGER PRE-GANGLIONIC FIBRES
What nerve is responsible for sympathetic innervation
Sympathetic trunk (cardiac plexus) SHORTER PRE-GANGLIONIC FIBRES Visceral afferents travel from heart to the CNS carrying info regarding cardiac homeostasis & pain
Branches of visceral descending aorta
Pericardial Bronchial oesophageal
Branches of parietal descending aorta
Mediastinal IC & subcostal
Superior phrenic
What do the 1st and 2nd posterior IC arteries join to give
Superior IC artery
IVC emerges @
T8 right phrenic nerve
Oesophagus emerges @
T10 vagi - when you’re fighting and flying, no need for innervation to oesophagus => PS innervation
Aorta emerges @ & its branches (2)
T12 thoracic duct and azygos vein associated with it
BRANCHES: Celiac trunk Superior mesenteric artery
Where does the abdominal aorta enter the abdomen
Behind median arcuate ligament
Where does abdominal aorta end
@ L4 (bifurcation)
what are the 4 unpaired branches of the abdominal aorta
T12 - coeliac trunk L1 - superior mesenteric L3 - inferior mesenteric L4 - median sacral
What are the 4 paired branches of the abdominal aorta
T12 - inferior phrenic L1 - middle adrenal L2 - renal L2 - gonadal
What does the internal carotid supply
Cranial cavity - supplies brain and some of the cerebellum
