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90 Cards in this Set

  • Front
  • Back

Cardiovascular System

Controls environment of the cells

4 chambered heart

complete separation of pulmonary and systemic circuts

Pulmonary

goes to lungs

Systemic

everywhere else but lungs

Pericardial

the heart sits in a sac filled with pericardial fluid

Cardiac Valve

Job is to prevent backflow

Regurgitation

Aka Backflow

Insufficiency

The valve does not close fully

Stenosis

Failure of valve to open fully, narrowing

Heart murmur

Blood spurting through a narrowing/ opening

Emptying phase

Insufficiency of mitral valve

Incompetent Valve

Does not close or open fully (not doing it's job)

Refractory Period

Time period when you cannot re-stimulate it

Pacemaker

Area of the heart within the highest auto rhythmic rate

Sinoatrail (SA) node

Normal pacemaker if the heart

Ectopic

When the pacemaker is somewhere else besides the SA node

AV node Delay

When the AV node stops for a 0.1 second delay

Arrhythmia

abnormal heart rate

Ectopic focus

Pacemaker somewhere other then SA node

Extra sytole

Extra beat of the heart

Premature Ventricular Contraction

Extra Ineffective beat

Systole

Contraction phase of cardiac cycle/ empty phase

Diastole

Relaxation phase of cardiac cycle/ fill phase

Heart sounds

Closure of cardiac valve

Lub S1

Closure of atrioventricular valve (lower tone)

Dup S2

Closure of Semilunar Valve (higher pitch)

Elctrocardiogram

Recording of electrical activity of the heart

P

Atrial depolarization

QRS Complex

Ventricular Depolarization

T

Ventricular Repolarization

Systolic Pressure

Ventricular pressure with regard to systole

Cardiac Output

Volume of blood you pump per min

Cardiac Reserve

Difference between max Co and resting Co

MAP = Co X Res (volume accounts too)

Mean Arterial Pressure

Afterload

Pressure you are pumping against

Preload

End Diastolic Volume

Stroke Volume

End Diastolic volume - End Systolic Volume

Starling's Law of the Heart

Within limits, increasing end diastolic volume causes increase force of contraction

3 ways to Regulate Blood pressure

1: Neural


2: Hormonal


3: Renal/Kidney

Baroreceptors

Located in carotid sinuses in aortic arch

Cardiac center

Cardiac output in the neural feedback look

Vasomotor center

Vasomotor tone, vasodialation, and vasoconstriction are PR in neural feedback loop

Barometric Pressure

Atmosphere pressure

Aldosterone

Save salt = save water = increase BP

ADH

Saves water = increase BP

Epinephrine and Norepinephrine

Increase HR = Increase BP

Angiotensionogen

Plasma protein manufactured in Liver

Renin

Splits angiotensionogen into angiotension I

Angiontension II causes

-Increase vasoconstriction


-Increase aldosterone

Hypertension

Persistent elevation of systemic arterial pressure

High BP

140/90 mmHg

Essential (Primary) Hypertension

Hypertension of etiology (unknown)

Secondary Hypertension

Known etiology




Ex: Increased ADH, Aldosterone disease, kidney problems

Hypotension

not enough force to drive blood to tissues

Low BP

Systolic < 100mmHg

Syncope

Fainting due to lack of cerebral blood flow

S&S of Syncope

Pale


Fatigued


Lathargic


Increased HR (Symp on)


Sweating (Symp on)

Orthostatic Hypotension

Body position hypotension




Ex: laying down, blood moves easier then standing up (Decr BP laying : Incr BP standing)

Circulatory Shock

Generalized inadequate tissue profusion

Ischemia

Local lack of profusion

Infarction

Death of tissue due to lack of blood supply

Heart failure

Failure of the heart to pump adequately, does not matter what caused it

Congestive Heart Failure

Not pumping so compensates by increasing volume (swelling)

Blood backsup ----- of the effected ventricle

Upstream

Lymphatic system functions

-Takes fluids out of intersteil fluid and returns to vascular system


-Immunity

3 Levels of Lymphatic vessels

1. Lymph capillaries


2. Lymph Vessels


3. Lymph Trunks

Lymph capillaries

Very permeable




Plasma proteins

Plasma contents

91% H2O


7% Protein


2% Other

Plasma Proteins

Albumins


Globulins


Fibrinogens

Albumins

-Draws water into cardiovascular capillaries




-Used for osmotic balance. Adema occurs if lose too much albumin




Ex: Egg whites

Globulins

alpha: transport proteins


beta: transport protein


gamma: antibodies

Fibrinogens

Precursor of fibrin

Fibrin

fiber of a clot

Lymph Vessels

-Respiratory movement


-Smooth muscle


-Skeletal muscle pumping

Respiratory movement

Boyles Law- when you breath in, pressure inside decreases and lymph pushes towards inside

Boyles Law

Smooth Muscle

During a contraction of smooth muscle, volume decreases and pressure increases. This is to move lymph against gravity

Skeletal muscle pumping

When the skeletal muscle contracts, it pushes blood and lymph back to the heart

Lymph Trunks

Thoracic Duct and Right lymph duct

Thoracic Duct

-cisterna chyli to Left subclavian




-3/4 of the body

Right Lymphatic Duct

Dumps into the right subclavian




1/4 of the body

Metastasis

distance spread of a tumor by lymphatic or cardiovascular system

Spleen

Largest lymph organ




Disk shaped




pulpy inside

Spleen functions

-lymph node: make antibodies


-site of RBC destruction


-development of Immunity

Elephantiasis

When a parasite gets stuck in the Inguinal lymph node and leg swells like an elephant

Immunity functions

-Defense against pathogens


-Removal of cell debris (like splinters)


-Recognition of abnormal cells (surveillance, mutant)

Specific Immunity

Antibody recognition, directed at a particular pathogen

Antigens

-Immunocologically Recognized Chemical Grouping

Salk

Discovered polio vaccine

Sabin

discovered oral vaccine for polio. A weakened form but living when injected