Blood Vessels
What are the three short term neural control mechanisms of PR
Baroreceptors, chemoreceptors, Hormones
What are the three layers of the heart tissue?
Epicardium, myocardium, endocardium
What vessel is oxygenated and carrys blood away from heart?
Arteries
What collagen strings support valve cusps?
Chordae tendineae
There are 3 phases of the cardiac cycle?
False, there are four
If you were to increase the length of the blood vessel, what would happen with the resistance?
It would increase
What do the auricles do on top of the heart?
They allow increased volume
Name each layers in the arteries and veins
Tunica externa, Tunica media, tunica intima
What are three ways the right atrium receives deoxygenated blood?
Coronary sinus, superior vena cava, inferior vena cava
SL valves open and close when pressure in the ventricles fluctuate?
TRUE
What is the definition of osmotic pressure?
Tendency of water to go towards a more concentrated solution
What vein is located in the anterior interventricular sulcus?
Which type of artery is medium-sized and contains more smooth muscles and less elastic
Muscular arteries
What is in the cardiac muscle that can depolarize spontaneously and continuously?
Autorhythmicity
The name for the interwoven networks of capillaries between arterioles and venules is capillary junctions?
False! it is microcirculation
What two types of pressure decline with increasing distance from the heart?
MAP and Pulse pressure
What is the name of the noncontractile cell in the right atrial wall?
Sinoatrial node (SA node)
Which capillary contains pores?
Fenestrated capillaries
What is the QRS complex?
ventricular depolarization, the action potential spreads interventricular septum
Short term mechanisms for BV are renal regulations
False! They are neural and hormonal controls, a quick fix
Renin-angiotensin-aldosterone mechanism
What is the remnant of fetal structure ductus arteriosus
Ligamentum arteriosum
What is the interconnections of blood vessels?
Vascular anastomoses
In isovolumetric relaxation what happens with blood flow?
Atrias begin to fill
Systolic pressure is low pressure in the artery at ventricular relaxation
False! its high pressure in artery at ventricular contraction