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Human Bio > Chapter 8 > Flashcards

Chapter 8 Flashcards

0
Q

When the coronary artery’s become clogged and blood flows to the heart it’s reduced the person they experience cramping chest pain upon exertion prior to full blown heart attack. This condition is

A

Angina pectoris

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1
Q

An ECG measures

A

The electrical activity of the heart

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2
Q

When the heart becomes weaker and less efficient pumping blood the blood me back up in the veins and cause a condition known as

A

Congestive heart failure

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3
Q

Blood flows from the right ventricle two

A

Pulmonary arteries

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4
Q

A persons resting blood pressure is 190/90 mm what condition is presented

A

Hypertension

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5
Q

In which blood vessels does the most exchange of nutrients and waste between blood and tissue color

A

Capillaries

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6
Q

The homeostatic regulation of the cardiovascular system is designed to maintain

A

Constant arterial blood pressure

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7
Q

Semilunar valve’s present blood from flowing

A

Backward into a ventricle

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8
Q

The cardiac conduction system initiates and delivers an electrical impulse that begins in the

A

Sinotrial node

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9
Q

Hypertension is caused by all except

A

Periodic elevated blood pressure levels

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10
Q

The systemic circuit delivers

A

Oxygenated blood to the body

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11
Q

Which of the following Describing hypertension is false

A

Easily diagnosed

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12
Q

What don’t arteries have

A

Valves

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13
Q

Which veins carry oxygenated blood

A

Right and left Pulmonary veins

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14
Q

A pacemaker is used to correct

A

Cardiac arrhythmias

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15
Q

As the blood travels through the circulatory system the greatest drop in pressure occurs in

A

Arterioles

16
Q

Which of the following are involved in regulating blood pressure

A

Heart
Baroreceptors
cardiovascular center in medulla oblongata

17
Q

A heart attack is due to the sudden death of heart tissue

A

True

18
Q

Smokers who have a heart attack I nearly 4 times as likely as non-smokers

A

True

18
Q

Systolic pressure measures the force

A

True

19
Q

heart sounds are caused by the pressure exerted on the walls

A

False

19
Q

In the capillary beds of the pulmonary circuit

A

False

19
Q

Regulation of cardiac output is controlled by

A

True

20
Q

In the heart blood travels literally

A

False

20
Q

The atrioventricular node

A

False

21
Q

A blood pressure reading of 140/90

A

False

22
Q

Inner layer of a blood vessel is the endothelium

A

True

23
Q

At rest each cardiac cycle takes .8 seconds

A

True

24
Q

Congestive heart failure occurs when the heart becomes less efficient

A

True

25
Q

Baroceptors are located in the medulla

A

False

26
Q

In the systematic circuit bloodflow is regulated

A

True

27
Q

High density lipoproteins deposit cholesterol on the endothelial

A

False

Human Bio (13 decks)

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