Blood Vessles Hemodynamixs And Homeostasis Flashcards
How is it determined if a person has tachycardia or bracycardia
Rapid HB over 100 B/m
Under 50 B/m
What is the sequence of flow of an electrical impulse in the conduction system?
SA (sinoatrial) node
AV (atrioventricular) node
AV bundles (Bundles of his)
Purkinje fibers
Name the 3 layers of the blood vessels
Tunica externa
Tunica media
Tunica interna
Which blood vessels contain the largest amount of circulating blood?
Veins
What does each number of Blood pressure represent
Top number: systolic pressure (contraction)
Bottom number: diastolic pressure ( relaxation)
What is the only artery that carries deoxygenated blood?
Pulmonary artery
What is the only vein that carries oxygen?
Pulmonary vein
What are the smallest blood vessels?
Capillaries
Where does exchange of substances between blood and interstitial fluid happen?
Capillaries
What are the two types of arteries
Elastic and muscular arteries
What is the purpose of elastic arteries?
Help propel blood onward while ventricles of the heart relax
What is the difference between muscular and elastic arteries?
Muscular arteries tunica media has more smooth mm than elastic
What arteries are aka distributing arteries?
Muscular arteries
This type of artery is Capable of greater vasoconstriction and vasodilation to adjust the rate of blood flow
Muscular artery
What is the key role for arterioles?
regulating resistance, because of this they are known as resistance vessels
What is the major difference between arteries and veins?
Presence of valves in veins
What is the open space in arteries called?
Lumen
The left side of the heart pumps blood through an estimated 100 000km of blood vessels
True
What is hemodynamics?
the force involved in circulating blood throughout the body
Why don’t artery’s require valves?
pressure from the heart is so strong that blood is only able to flow in one direction.
What blood vessel is know as the exchange vessel?
Capillaries
What is the outer most layer in blood vessels?
Tunica externa
Which wall of blood vessel is made up of 2 layers and one layer regulates the diameter of the lumen, what layer is this?
Tunica media : smooth muscle layer
Which wall of a blood vessel consists of the smooth muscle layer and external elastic lamina
Tunica media
Which wall of the blood vessels is made of of the 3 layers? Name them from inner mist layer to outermost part
Tunica interna ; endothelium, basement membrane, internal elastic lamina
The right side of the heart pumps blood through the lungs, enabling blood to pick up oxygen and unloading CO2.
True
What is thrombosis?
when blood clots too easily and forms a clot within an undamaged blood vessel
What are the 2 pathways of blood clotting?
Extrinsic pathway and intrinsic pathway
What is the purpose for T and B cells
help combat infections and provide protection against some diseases
What is the life span of platelets? How are they removed?
5-9 days; removed by spleen and livers
This is a replacement of cancerous or abnormal red bone marrow with healthy red bone marrow in order to establish normal blood cell counts
bone marrow transplant
What is the purpose for NK Cells?
NK cells attack a wide variety of infectious microbes and certain spontaneously arising tumor cells.
