smooth, controlled muscle contractions are due to
when a muscle cell generates tension but does not shorten, the 'contraction' is
a force- velocity curve shows a(n) ______ relationship between the force opposing the contraction and its velocity
a reserve of high-energy phosphate is stored in muscle as
slow twitch muscle fibers have a ___ oxidative capacity and ___ glycogen content
muscle fatigue occurs when
______ is a 'flapping' tremor caused by alternating activation of antagonistic reflex arcs
_______ is the inhibition of an antagonistic muscle so the agonist can act unopposed
cardiac muscles are conductive because
in cardiac muscle, calcium ions are released from the sarcoplasmic reticulum by
as smooth muscle lacks troponin, the activation of myosin-actin cross bridges is mediated by
the pathway from the heart, through the lungs, and back to the heart is
the _______valve prevents blood from flowing back to the left atrium from the left ventricle.
the amount of blood pumped by the ventricles with each heartbeat is the
systole refers to ______, while diastole refers to _____
on average the ejection fraction of the left ventricle is about 60% of the _______
opening more slow Calcium Ion channels in the autorhythmic cells of the SA node would
the cardiac pacemaker cells known as HCN cells open in response to ____ and allow passage of ___
Myocardial cells exhibit a plateau phase instead of quickly repolarizing. This is due to
The production and conduction of action potentials in the heart produces a recordable tracing of the electrical activity of the heart called a(n)
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