This chamber of the heart receives deoxygenated blood from the body.
right atrium
This node is known as the heart’s natural pacemaker.
sinoatrial (SA) node
A 43 year old stabbing victim presents to the ED after suffering a knife wound to his chest. Auscultation of his chest reveals absent breath sounds on the right hand side due to a pneumothorax, where the lung has collapsed.
What pulmonary pressure has been affected to cause this?
Intrapleural pressure
A GP is running behind schedule when a patient arrives for a routine check-up. During the consultation, the patient unexpectedly discloses feelings of depression and isolation. The GP feels stressed about time but recognizes the importance of addressing the patient’s emotional state. How would you phrase a response which best demonstrates emotional intelligence, balancing empathy, self-regulation, and patient-centered care?
suggested response: That sounds really difficult. I want to make sure we give this the attention it deserves. Let’s take a few minutes now, and I’ll arrange a follow-up to explore this further
These valves prevent backflow from the ventricles into the atria
atrioventricular (AV) valves
These specialized junctions allow ions to flow between cardiac cells, enabling synchronized contraction.
gap junctions
This enzyme, activated by ApoC-II, hydrolyzes triglycerides in chylomicrons and VLDL, releasing free fatty acids for tissue uptake.
lipoprotein lipase (LPL)
A GP is consulting with a patient who has a history of chronic pain and frequently expresses frustration about the lack of improvement. During today’s visit, the patient says, “I feel like no one is really listening to me anymore.” The GP feels personally challenged by the comment but wants to maintain a therapeutic relationship.
What would be a response which best demonstrates high emotional intelligence, including self-awareness, empathy, and relational management?
Suggested response:I understand this has been a long journey. Can you help me understand what you feel hasn’t been heard?
This artery originates from the left aortic sinus and supplies most of the left ventricle.
left coronary artery (LCA)
This phase of the cardiac cycle is marked by ventricular contraction and ejection of blood.
systole
This class of drugs mimics the action of the sympathetic nervous system by directly stimulating adrenergic receptors.
sympathomimetics
This structure lies posterior to the ascending aorta and pulmonary trunk and is used during cardiothoracic surgery.
transverse pericardial sinus
This ion influx is primarily responsible for the plateau phase in a cardiomyocyte action potential.
calcium (Ca²⁺)
A 58 year old male with a history of high cholesterol and hypertension presents to the GP for a script renewal. During the consult, the doctor ascertains that he has not made much effort to change his diet, still consuming fatty meals daily.
What would be present in the blood in the immediate period following the meal?
Chylomicrons
This surface of the heart is formed mainly by the right and left ventricles and the inferior surface of the right atrium.
diaphragmatic surface
This autonomic neurotransmitter increases heart rate and contractility by acting on β1-adrenergic receptors.
noradrenaline (norepinephrine)
This irreversible inhibitor of acetylcholinesterase is classified as a nerve agent and causes toxic accumulation of ACh.
organophosphate (e.g., sarin)