Blood
The liquid portion of blood is known as _________.
What is plasma?
Blood enters the _________(chamber) from the superior and inferior vena cava.
What is the right atrium?
The __________ discs are specialized junctions between the cardiac cells.
What are intercalated discs?
The _________ node is the origin of action potentials in the heart.
What is the sinoatrial (SA) node?
The __________ circuit moves oxygenated blood from the heart to the rest of the body and back.
What is the systemic circuit?
Sickle-cell disease causes ____________ to become sickle-shaped at lower blood O2 concentrations.
What are erythrocytes?
The _______ sulcus is a groove that separates the atria and ventricles.
What is the coronary sulcus?
or
What is the atrioventricular sulcus?
The membrane of cardiac muscle cells is called the ___________.
What is the sarcolemma?
The delay of action potentials at the atrioventricular (AV) node allows the ___________ to completely fill with blood.
What are the ventricles?
The number of heart beats per minute is known as _________.
What is the heart rate?
_______________ are markers found on the surface of RBCs that designate ABO blood type.
What are surface antigens?
The _______ pericardium is composed of parietal and visceral layers.
What is the serous pericardium?
The ________ are invaginations of the sarcolemma where voltage-gated Ca2+ channels are located.
What are T-tubules?
One of the requirements to have voltage across a membrane is a difference in concentration of _____ across the membrane.
What are ions?
The _________ is the thickest layer of the heart and composed of cardiac muscle tissue.
What is the myocardium?
The presence or absence of ___________ determines if someone's blood type is "positive" or "negative."
What is surface antigen D?
The ___________(internal structure) is the thick wall that separates the left and right ventricles.
What is the interventricular septum?
When the influx of Ca2+ reaches the T-tubules is causes the release of more Ca2+ from the __________.
What is the sarcoplasmic reticulum?
"Funny channels" are special types of Na+ channels found in ____________ cells.
What are autorhythmic cells?
Cardiac output is the volume of blood ejected by each ventricle each minute and can be described mathematically as:
Cardiac output = _______ x _______
What is cardiac output = Heart rate (HR) x Stroke volume (SV)
A person with B+ blood can donate to someone who has ____________(all possible blood types).
What is B+ blood?
and
What is AB+ blood?
The __________(vessel) delivers deoxygenated blood to the lungs from the right ventricle of the heart.
What is the pulmonary trunk?
or
What is the pulmonary artery?
Excitation-contraction coupling of cardiac muscle occurs through ___________-stimulated __________ release.
What is calcium-stimulated calcium release?
Contractile cells have a resting membrane potential (RMP) of ____ mV.
What is -90 mV?
This law states that the heart normally pumps out the same volume of blood during systole at the volume returned to it during diastole.
What is Frank-Starling Law?