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Anatomy 205 > Study Guide Heart > Flashcards

Study Guide Heart Flashcards

1
Q
A
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2
Q

Cadiovascular system

A

system that supplies blood to the organs of the body

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3
Q

Pulmonary system

A

serves to exchange CO2 for O2 in the lungs

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4
Q

Systemic system

A

delivers O2 and nutrients to organs

removes waste products

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5
Q

Heart

A

located mediastinum between lungs

30grams 9 cm wide 13 cm from base to apex

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6
Q

Heart chambers

A

R Atrium

L atrium

R Ventricle

L Ventricle

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7
Q

R Atrium

A

receives de-oxygenated blood

pumps to R ventricle

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8
Q

R Ventricle

A

pumps blood to pulmonary system

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9
Q

L Atrium

A

receives oxygenated blood

pumps to L ventricle

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10
Q

L Ventricle

A

pumps to systemic system

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11
Q

Heart surface

A

enclosed in pericardial sac

epicardium

pericardial cavity containing pericardial fluid

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12
Q

heart valves

A

R AV (tricuspid)

L AV (bicuspid, Mitrol)

Aortic valve

Pulmonary valve

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13
Q

R AV

Tricuspid valve

A

opesn to allow flow from R atrium

closes to prevent back flow

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14
Q

L AV

bicuspid

mitrol

A

opens to allow flow from L atrium

closes to prevent backflow

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15
Q

Aortic valve

A

opens to allow flow from L ventricle allow flow to the systemic circuit

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16
Q

pulmonary valve

A

opens to allow flow to the pulmonary circuit

17
Q

Coronary circulatoin

A

circulation of blood supply to the heart itself

18
Q

Coronary arteries

A

Left coronary artery

anterior interventricular

circumflex branches

left marginal branch

Right coronary artery

right marginal

posterior interventricular branch

19
Q

myocardial infarction

A

heart attack

Death of heart muscle

caused by blockage of coronary arteries

20
Q

cardiac conduction system

A

Sinoatrial (SA) node

Atrioventricular (AV) node

21
Q

Sinoatrial node

SA

A

sets rhythm of heart

signals spread to the AV node

22
Q

Atrioventricular node

AV

A

signals travel through

AV bundle

Right/left bundle branches

purkinje fibers to ventricular myoccytes

23
Q

cardica muscle histology

A

striated cells

single nucleus

poor sarcoplasmic reticulum

large T-tubles

large abundant mitochondria

intercolated discs

24
Q

Intercellular junctions of myocytes

A

allow for conduction of electrical signals from cell to cell

25
Q

autonomic innervation of heart

A

modifies heart rate and contraction force

26
Q

systole

A

contraction of myocardium

27
Q

diastole

A

relaxation of myocardium

28
Q

Cardiac cycle

A

chambers relaxed and blood filling heart filling atria and ventricles

SA node fires contracting atria completing fill of ventricles

AV node fires contracting ventricles and sending blood to pulmonary artery and aorta

29
Q

P wave

A

atrial systole

atrial depolarization (ON)

30
Q

QRS complex

A

ventricular depolarization (ON)

atrial polarization (OFF)

31
Q

T wave

A

Ventricluar polarization (OFF)

32
Q

fetal heart structure

A

Foramen ovlae

ductus arteriosus

33
Q

fetal blood flow

A

most blood bypasses lungs via the foramen ovale between L\R atria

Ductus arteriosus between pulmonary artery and aortic arch

Anatomy 205 (44 decks)

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