-
thrombin is and ensime that will convert fibrinogen (water) into fibrin (insoluble) mesh
-
coagulation, conversion of prothrombin to thrombin via prothrombin activator
-
platelets
first line of defense
-
blood contains hemoglobin
-
hematopoiesis
production of blood
-
Blood functions
- protects
- distrubutes
- regulation
-
compnents of blood
- plasma
- formed elements (red blood cells) leolights, platelets
-
cardioaccelatory - symp
cardioINhibitory - para
-
release of neuro epriehn onto heart musicle will caused increased Ca2 and eergy into cell allowing for more cross bridge formation
not only NE does this must strongest
-
ANS increases contracttility
-
Frank Starlin law of the heart
whatever the heart recieves it will send back out
-
Cardiac output is based on
- heart rate and stroke volume
- full and empty ventrical
-
the cardiac output is the flow in
1 min
-
ventricular filling
atrial pressure rises due to P waves create full ventricles
-
A contraction event (of either the atria or ventricles) is referred to as
systole
-
Why don't you see the arterial muscle relaxing and refilling, or polarixing on an EKG
because the action potential due to calcium makes it a little longer and complex during the QRS mode while it goes through the pretingi fibers the bundles ect. and it allows for it to refill to 70%
-
T wave
- The
- T wave represents the repolarization of the ventricles. Electrical
- activity generated by the repolarization of the atria is concealed by
- the QRS complex.
-
QRS wave
- contraction of the ventricular, the AVnode bundles and Purkinje fibers allow for complete V contraction
- will be slightly behind atrial
-
P wave
- When the heart fills up to 100% blood
- when the atria muscle contracts
-
CAlcium
causes the length and the plateau
Slow and fast calcium channels
-
causes the potental to rise quickly
Sodium
-
AP is longer and sustained in cardiac muscle
-
What items are nessesary for contraction?
-
Where is the sinotricular node located?
the right atrium
-
The Sinoatriular node (pacemaker)
is what starts off the heart beat.
-
through the vena cavy the blood fills the right atrium, when it is full it contracts and then goe to the right ventricle . the trycusic valve closes after right v the pulmnary
aorta valve,
In the right
-
the phase of diastole
the ventrials relax, and the heart fills with blood
-
Contaction is also known as
sistole
-
the cardiac muscle needs electrical _____ for contraction to occure
de polizeration
-
Diffrences between cardiac muscles and skelatal
means of stimulation, CArdiac cells are self excitable allows for direct stimulation of the heart muscle (does not need nerve endings)
the tissue contracts as a whole
the lenth of the action potential is much longer
-
Valves are oppen _______ when blood arrives and are ________ by the strength of the contaction from the perspective chamber
passively, closed
-
Chlorde tendinae conects to the papillary muscle which is an exention of the
heart
-
Valves are connected by
Chlorde tendinae and papillary muscle
-
Inner heart muscle
Mycardium
-
Pulmonary
Brings de ox blood to the lungs
-
Systomatic circulation
oxygenated to the tissues then de ox back
-
Left atrium -
Left ventricle
Right atrium
Right V
- pulmonary veins (O)
- Aorta (O)
- Vena cava
- pulmonary artery
-
-
-
Valves are important to
Prevent backflow into the chamber
-
Pulmonary circulation
the left ventrical contracts pushing red blood cells into the aorta. From here the blood is pumped into smaller arteries until it reaches a capilarry (the junction between veins and arteries) here oxygen is detached from the red blood cells and goes across the artery wall into body tissue. Now that it is de-oxiginated it is pumped into the right ventricle then through the pulmonary arteries to the lungs to pick up oxygen. reenters the left atrium to the left ventrical and begins again
-
the atria and the ventricles are ____ left and right. therefore there are ___ chambers. Each chamber is associated with _____ vessels
-
the 2 atera ____ blood and ventricles ______ blood
-
Heart location
thoratic cavity, anterior to the vertebral column
-
Blood
the transport mechanism that the heart will use to pump nutrients gases and ect.
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