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Anatomy > Anatomy of the heart > Flashcards

Anatomy of the heart Flashcards

1
Q

Heart Function

A

Pumps blood through pulmonary circulation to lungs and systemic circulation to rest of body

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2
Q

Opening of Coronary Sinus Function

A

Returns venous blood from the coronary circulation to the right atrium

Notes: Opening lies on the inferior side of the atrium anterior to the foramen ovale and opening of the IVC

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2
Q

Heart Innervation

A

vagus nerve (parasympathetic); thoracic sympathetic trunk T1-T4 (sympathetic)
sensation pathways: unconscious/reflex (vagus) pain (sympathetic)
Also contains intrinsic nervous system to control cardiac muscle contractions (SA Node, AV node and fibers)

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2
Q

Right Atrium Function

A

Receives venous blood from superior vena cava, inferior vena cava, coronary sinus. Pumps blood to right ventricle

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2
Q

Heart Blood supply

A

Coronary arteries

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3
Q

Right Atrium Blood supply & Innervation

A

Blood: Right coronary artery
Innervation: see heart

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4
Q

Right atrioventricular (tricuspid) valve Function

A

Regulates blood flow between the right atrium and right ventricle

Has 3 valve leaflets

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5
Q

Pectinate muscles Function

A

Strips of muscles that project off crista terminalis

Notes: Demarcates muscular part of the right atrium

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6
Q

Right Ventricle Functions

A

Receives blood from the right atrium, pumps blood into the pulmonary trunk to lungs

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7
Q

Right Ventricle Blood Supply & Innervation

A

Blood: Right coronary artery
Innervation: see heart

Notes: Most anterior part of heart

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8
Q

Interventricular Septum Function

A

Divides left and right ventricles.

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8
Q

Interventricular Septum Blood supply & Innervation

A

Blood: Anterior 3/4 from anterior interventricular artery (LAD), posterior 1/4 typically from posterior interventricular artery

Innervation: see heart

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9
Q

Right ventricle papillary muscles (anterior, septal, posterior) Function

A

Contracts to maintain av valve sufficiency to prevent backflow of blood during ventricular contraction

Attached to the right atrioventricular valve via tendons called chordae tendinea

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10
Q

Septomarginal trabecula (moderator band) Function

A

Transmits nervous impulses to anterior papillary muscle from interventricular septum-coordinates papillary muscle contraction

Spans from the interventricular septum to the anterior papillary muscle

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11
Q

Right Semilunar Valve (Pulmonic valve) Function

A

Prevents backflow of blood to the right ventricle

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11
Q

Left Atrium Function

A

Receives oxygenated venous blood from the lungs, pumps blood to left ventricle

11
Q

Trabeculae carneae Function

A

Projections of ventricular muscle into the lumen

Notes: Found in both ventricles

12
Q

Left Atrium Blood Supply & Innervation

A

Blood: Left coronary artery
Innervation: see heart

Notes: Most posterior part of heart

13
Q

Left atrioventricular (bicuspid or mitral) valve Function

A

Regulates blood flow between the left atrium and left ventricle

14
Q

Left atrioventricular (bicuspid or mitral) valve Blood Supply & Innervation

A

Blood: Left coronary artery
Innervation: see heart

Notes: Has 2 valve leaflets

15
Q

Left ventricle Function

A

Receives blood from the left atrium, pumps blood into the aorta to systemic circulation

16
Q

Left ventricle papillary muscles (anterior, posterior) Function

A

Contracts to maintain av valve sufficiency to prevent backflow of blood during ventricular contraction

17
Q

Left Ventricle Blood Supply & Innervation

A

Blood: Left coronary artery
Innervation: see heart

Notes: Wall is thicker in the left ventricle than the right ventricle

18
Q

Left ventricle papillary muscles (anterior, posterior) Blood Supply & Innervation

A

Blood: Left coronary artery
Innervation: see

Notes: Attached to the left atrioventricular valve via tendons called chordae tendinea

19
Q

Left semilunar valve (aortic valve)
Function

A

Prevents backflow of blood to the left ventricle

20
Q

Left semilunar valve (aortic valve) Blood Supply & Innervation

A

Blood: Left coronary artery
Innervation: see heart

Notes: Just distal to the valve leaflets are the openings of the coronary arteries

Anatomy (25 decks)

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