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Week 12 Test 4

Masterbooks Intro to A&P Volume 2

QuestionAnswer
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
 



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