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CTC Bio 1107 > Chapter 13 : The Heart Structure and Functions > Flashcards

Chapter 13 : The Heart Structure and Functions Flashcards

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Biology 101 flashcards
1
Q

Function of the heart

A

Pump blood throughout the body

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2
Q

Heart shape and location

A

Cone shaped, muscular pump located within the mediastinum of the thoracic cavity and resting on the diaphragm

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3
Q

Pericardium

A

3 layers of membranes that cover the heart and ends of large blood vessels

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4
Q

Fibrous Pericardium

A

Tough outer membrane made of connective tissue

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5
Q

Parietal Pericardium

A

Membrane that lines the inner wall of the paricardial cavity (inside fibrous pericardium)

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6
Q

Visceral Pericardium

A

Membrane that cover the surface of the heart

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7
Q

The protective coverings of the heart

A

Pericardium
Fibrous Pericardium
Parietal Pericardium
Visceral Pericardium

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8
Q

The parts of the wall of the heart

A

Epicardium
Myocardium
Endocardium

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9
Q

Epicardium

A

Outer most epithelial membrane that secretes serous fluid and reduces friction

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10
Q

Myocardium

A

Middle layer made of cardiac muscle

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11
Q

Endocardium

A

Inner most layer of elastic and collogenous fibers

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12
Q

FPV EME

A

Fibrous Pericardium
Parietal Pericardium
Visceral Pericardium

Epicardium
Myocardium
Endocardium

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13
Q

The chambers of the heart

A

4 hollow chambers

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14
Q

Atria

A

2 upper chambers of the heart

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15
Q

Ventricles

A

2 lower chambers of the heart

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16
Q

Intraventricular Septum

A

Separates left from right chambers (vertically down center of heart)

17
Q

Apex

A

Point of the heart at the bottom of the ventricles (mainly left)

18
Q

Base

A

Flat portion on the posterior of the heart where the hear sits on the diaphragm

19
Q

Valves

A

Located between openings of the heart

20
Q

Chordae Tendineae

A

Fibers that connect cusps with papillary muscles in the ventricle

21
Q

Papillary Muscles

A

Pull on the chordae tendineae to keep the cusps in place during ventricle contraction

22
Q

Atrioventricular Valves

A

(A-V valves) separate the atria from the ventricles to prevent “backflow” of blood

23
Q

Tricuspid Valve

A

Separates right atrium and ventricle

24
Q

Bicuspid Valve

A

Separates left atrium and ventricle

25
Q

Semilunar Valves

A

Separate the openings to the pulmonary arteries and aorta

26
Q

Pulmonary Valve

A

Allows blood to leave the right ventricle into the pulmonary trunk without back flow

27
Q

Aortic Valve

A

Allows blood to leave the left ventricle into the aorta without backflow

CTC Bio 1107 (49 decks)

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