Quiz_________________?
1. Low oxygen levels in blood stimulate kidneys to produce erythropoietin
2. Erythropoietin levels rise in blood
3. Erythropoietin and necessary raw materials in blood promote erythropoiesis in red bone
marrow
4. New erythrocytes enter bloodstream; function about 120 days
5. Aged and damaged red blood cells are engulfed by macrophages of liver, spleen, and bone
marrow, the hemoglobin is broken down -
ANSWER✅
Describe the life cycle of an erythrocyte
Quiz_________________?
1. Sinoatrial (SA) node = pacemaker
Internal pathway
2. Atrioventricular (AV) node
1
, 3. Atriventruclar (AV) bundle (Bundle is His)
4. Bundle Branches
5. Purkinje fibers -
ANSWER✅
Describe the pathway of the cardiac conduction system
Quiz_________________?
4-
ANSWER✅
Heart Valves
Quiz_________________?
4 pulmonary veins -
ANSWER✅
Left Atrium
Quiz_________________?
45% Formed Elements
55% Plasma
<1% Platelets and White Blood Cells -
ANSWER✅
2
, List the 4 components of blood and their percentages
Quiz_________________?
Amount of pressure on the walls of blood vessels
HP in arterioles high = low in venules -
ANSWER✅
Hydrostatic Pressure
HP
Quiz_________________?
Anastomoses - Joining together of blood vessels, forming interconnections that allow for
alternative routes for blood to reach the same organ
Veins form anastomoses more freely than arteries -
ANSWER✅
Vascular Anastomoses
Quiz_________________?
Aortic semilunar valve (located in left ventricle, behind the mitral valve); gate to aorta
Pulmonary semilunar valve (located at the base of the pulmonary trunk)
When ventricles relax, AV valves open
When ventricles contract, AV valves close -
3
1. Low oxygen levels in blood stimulate kidneys to produce erythropoietin
2. Erythropoietin levels rise in blood
3. Erythropoietin and necessary raw materials in blood promote erythropoiesis in red bone
marrow
4. New erythrocytes enter bloodstream; function about 120 days
5. Aged and damaged red blood cells are engulfed by macrophages of liver, spleen, and bone
marrow, the hemoglobin is broken down -
ANSWER✅
Describe the life cycle of an erythrocyte
Quiz_________________?
1. Sinoatrial (SA) node = pacemaker
Internal pathway
2. Atrioventricular (AV) node
1
, 3. Atriventruclar (AV) bundle (Bundle is His)
4. Bundle Branches
5. Purkinje fibers -
ANSWER✅
Describe the pathway of the cardiac conduction system
Quiz_________________?
4-
ANSWER✅
Heart Valves
Quiz_________________?
4 pulmonary veins -
ANSWER✅
Left Atrium
Quiz_________________?
45% Formed Elements
55% Plasma
<1% Platelets and White Blood Cells -
ANSWER✅
2
, List the 4 components of blood and their percentages
Quiz_________________?
Amount of pressure on the walls of blood vessels
HP in arterioles high = low in venules -
ANSWER✅
Hydrostatic Pressure
HP
Quiz_________________?
Anastomoses - Joining together of blood vessels, forming interconnections that allow for
alternative routes for blood to reach the same organ
Veins form anastomoses more freely than arteries -
ANSWER✅
Vascular Anastomoses
Quiz_________________?
Aortic semilunar valve (located in left ventricle, behind the mitral valve); gate to aorta
Pulmonary semilunar valve (located at the base of the pulmonary trunk)
When ventricles relax, AV valves open
When ventricles contract, AV valves close -
3
