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Introduction to Human Biology > Chapter 11- Cardiovascular System > Flashcards

Chapter 11- Cardiovascular System Flashcards

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1
Q

Define the Function: Cardiovascular System

A

the heart pumps blood through blood vessels throughout the body

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2
Q

Define: Pericardium

A

is a double walled sac that encloses the heart

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3
Q

Define: fibrous pericardium

A

the loosely fitting superficial part of the pericardium sac

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4
Q

Define the Function: Fibrous Pericardium

A

helps protect the heart and anchors it to surrounding structures, such as diaphragm and sternum

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5
Q

Define: Epicardium

A

part of the heart wall

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6
Q

Define the Function: Serous Fluid

A

allows the heart to beat easily in a relatively frictionless environment

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7
Q

Name the 3 layers to the heart wall

A
  1. EPIcardium- outer layer
  2. MYOcardium
  3. ENDOcardium- inner most layer
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8
Q

Which layer of the heart contracts

A

Myocardium

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9
Q

Define: Endocardium

A

is a thin, glistening sheet of endothelium that lines the heart chambers

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10
Q

Name the 4 chambers of the heart

A

2x Atria

2x Ventricles

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11
Q

Name the 2 systems that act to regulate heart activity

A
  1. nerves of the autonomic nervous system (they increase or decrease heart rate depending on which division is activated
  2. Intrinsic conduction system- built into heart tissue and sets basic rhythm
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12
Q

Define: Systole

A

heart contraction

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13
Q

Define: Dystole

A

heart relaxation

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14
Q

Define the order of cardiac cycle

A
  1. Mid-to-late diastole
  2. Ventricular systole
  3. Early diastole
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15
Q

Define: Cardiac Output

A

is the amount of blood pumped out by each side of the heart in 1min

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16
Q

Cardiac Output is the product of what?

A

Heart rate and Stroke volume

17
Q

What is the formula for Cardiac Output

A

CO= HR (beats/min) X SV (ml/beat)

18
Q

What is the largest artery of the body

A

Aorta

19
Q

Define the Function: Hepatic Portal Circulation

A

drains the digestive organs, spleen and pancreas and deliver this blood to the liver through the hepatic portal vein

20
Q

Name the organs of the Cardiovascular System

A

Heart

Blood vessels

Introduction to Human Biology (12 decks)

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