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Week 12 Test 4
Masterbooks Intro to A&P Volume 2
Question | Answer |
---|---|
tiny power generators that keep the heart muscle continually supplied with energy | mitochondria |
provide a route for electrical signals to be transmitted from muscle cell to muscle cell | gap junctions |
the name given to the five steps involved in filling the heart's chambers and pumping the blood | cardiac cycle |
the situation where adequate oxygen is not delivered to the heart muscle | myocardial ischemia |
the amount of blood pumped by the heart in one minute | cardiac output |
the amount of blood left in the ventricle after it contracts | end systolic volume |
connect the arteries and veins | capillaries |
their primary function is to return blood to the heart | veins |
the part of the nervous system that oversees regulation of the heart and blood vessels | cardiovascular center |
situations in which the cardiovascular system cannot deliver adequate blood flow to meet the body's needs | shock |
A normal _______________ is about the size of a person's fist. | heart |
The walls of the ventricles are made of _______________ muscle that the atrial walls. | thicker |
The pressure of the _______________ inside the ventricles pushes them shut. | blood |
God designed the _______________ circulation - a way for the heart to pump blood to itself. | coronary |
Cardiac output is the product of two things: the heart rate (HR) and the _______________ volume (SV). | stroke |
One of the most common tests performed to detect coronary artery disease is called an exercise test, or a "_______________" test. | stress |
There are five primary types of blood vessels: _______________, aterioles, veins, venules, and capillaries. | arteries |
Pulse rate is recorded in _______________ per minute. | beats |
When a person has a blood pressure that is chronically over 140/90 it is known as _______________, commonly called "high blood pressure". | hypertension |
By some estimates, _______________ percent of the world's population has hypertension. | 25 |