The Cardiovascular System - Electrical Conduction Flashcards

1
Q

Cardiac Cycle

A

A single cardiac cycle consists of the simultaneous contractions of both atria followed by the simultaneous contractions of both ventricles.

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2
Q

Systole

A

Contraction of the ventricles (and relaxation of the atria)

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3
Q

Diastole

A

Relaxation of the ventricles

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4
Q

Dilate

A

Relax

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5
Q

Why do the ventricles diastole?

A

To receive blood

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6
Q

How do people measure blood pressure?

A

They measure by the amount of pressure placed on arterial walls during Systole and Diastole

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7
Q

When a blood pressure reading is taken, the top number is called the _____

A

Systolic Pressure

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8
Q

When a blood pressure reading is taken, the bottom number is called the _____

A

Diastolic Pressure

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9
Q

The main controller of the heart is a tiny bundle of nervous tissue called the ___

A

Sinoatrial Node

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10
Q

What sets the pace of the heart?

A

The Sinoatrial Node

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11
Q

A normal resting heart rate is between what?

A

60 and 100 beats per minute

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12
Q

A heart rate slower than 60bpm indicates ____

A

Bradycardia

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13
Q

A heart rate faster than 100bpm indicates ____

A

Tachycardia

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