C- Overview and Anatomy Flashcards

1
Q

Cells Have Needs like (6)

A
Nutrients (glucose, amino acids)
Oxygen
Waste Removal (CO2, Lactic Acid)
Constant temperature
Constant pH
Constant isomolarity

CV system provides this

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2
Q

The function of the cardiovascular system is to maintain ______________

A

homeostasis

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3
Q

Three Parts to the Cardiovascular System

A

Heart - pump

Blood- transportation mechanism

Vasculature tubing-exchange system

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4
Q

Left side is higher pressure, serves the________

A

systemic circulation

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5
Q

Right side is lower pressure, serves the ___________

A

pulmonary circulation

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6
Q

Low pressure

single pathway through a single set of capillary beds

A

Pulmonary circulation:

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7
Q

Higher pressure

Mostly arranged in parallel

A

Systemic circulation

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8
Q

oxygenated blood usually only visits one organ system before returning to heart

A

parallel arrangement

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9
Q

Functional Anatomy of the Heart:

Rule of 4

A

4 Chambers, 4 Vessels, and 4 Valves

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10
Q

Vessels of the heart

A

sup. vena cava
inf. vena cave
aorta
pulm a. & v.

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11
Q

Ventricles are

A

main pumping chambers

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12
Q

Atria are

A

Smaller “priming” chambers

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13
Q

Valves of the heart

A

tricuspid valve
pulm valve
aortic valve
mitral valve

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14
Q

Layers of the heart wall

A

Epicardium
Myocardium
Endocardium

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15
Q

Pericardial Membrane is not

A

NOT connected to the heart, just surrounds it

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16
Q

Valves are one-way, control direction of blood flow through the heart

Pressure operated – _______

17
Q

Atrioventricular valves

A

tricuspid

mitral

18
Q

Semilunar valves

A

outflow valves

aortic and pulm

19
Q

Valves are __________ control direction of blood flow through the heart

Pressure operated – PASSIVE

20
Q

between atria and ventricles
have chordae tendons that attach to papillary muscles in ventricles and help stabilize valves and prevent prolapse of the valves.

A

Atrioventricular valves

21
Q

Between ventricles and great arteries

No chordea tendons

A

Semilunar valves

22
Q

Automaticity and the heart means

A

heart beat is myogenic, originates within the heart itself

23
Q

specialized myocytes

initiates the heartbeat

A

Sinoatrial Node

24
Q

between atria and ventricles

slows conduction to allow atrial contraction to precede ventricular contraction

A

Atrioventricular (AV) node

25
between AV node and left and right bundle branches in ventricles fibers on inner walls of ventricles = specialized cardiac myocytes cells that allow fast conduction coordinated contraction of ventricles
His-Purkinje system
26
Coronary Circulation
R. main coronary a | left main coronary a
27
Left Main Coronary Artery
supplies left atrium & ventricle bifurcates to Left Anterior Descending (LAD) and Circumflex arteries LAD = “widowmaker”
28
Right Main Coronary Artery
supplies right atrium & right ventricle
29
Coronary arteries arise from root of ______
aorta
30
Anatomy of Resistance Vessels (Arterioles)
Tunica adventitia Tunica media Tunica intima
31
(Arterioles) outermost layer connective tissue (collagen & elastin)
Tunica adventitia
32
(Arterioles) middle layer Innervated smooth muscle cells Controls vessel diameter
Tunica media
33
``` (Arterioles) inner layer connective tissue and vascular endothelium Important for signaling Site of atherosclerotic plaque formation ```
Tunica intima