EXAM 3 Questions and Answers-
NURSING 245
what are the basic functions of the circulatory system? - Answer-delivery, removal, and assisting
What are the more specific functions of the circulatory system? - Answer--Delivery of oxygen, nutrients,
hormones, electrolytes, and other essentials to the cells
-Removal of carbon dioxide, metabolic wastes, and other detritus (non-living particulate organic matter)
from cells
-Assists in fighting infection
what are the two major divisions of the circulatory system? - Answer-pulmonary circulation
systemic circulation
which major circulatory division delivers blood to the lungs? - Answer-pulmonary division
which major circulatory division delivers blood to peripheral circulation- other tissues in the body? -
Answer-systemic circulation
,what is the third most often over looked circulatory division? - Answer-coronary circulation
which major circulatory division involves the body feeding the coronary circulation before the coronary
circulation feeds the body?
i.e. Think of the blood as another organ, its essential to the body - Answer-coronary circulation
which organ is basically a pump? - Answer-the heart
which organ function to moves blood throughout the arterial tree? - Answer-the heart
which elements make up the circulatory structure? - Answer--heart
-blood
-arteries
-veins
-arterioles
-veinules
-capillaries
what is a closed system until something opens it up ex: a cut, wound? - Answer-a circulatory system
what is the bodies best defense against infection? - Answer-intact skin
which circulatory structure transports blood, but lacks elasticity? - Answer-arteries
which circulatory structure regulates blood flow (arterial pressure)? - Answer-arterioles
,which circulatory structure is a site of exchange? - Answer-capillaries
which circulatory structure is to collect blood from the capillaries? - Answer-Venules
which circulatory structure is to transport blood back to the heart, serve as a major reservoir for the
blood (very elastic hold lg volume of fluid) ? - Answer-veins
true or false
A vein distention produces a large increase in venous volume - Answer-true
on average about bout how many liter of blood are from cardiac output? - Answer-5L/ minute
what percentage of blood is in the pulmonary circulation? - Answer-9%
what percentage of blood is in the heart? - Answer-7%
what percentage of blood is in the systemic circulation? - Answer-64%
what makes blood flow? - Answer-Force that drives flow is greater than the resistance (a pressure
gradient)
what 3 mechanism return blood back to the heart - Answer-1. negative arterial pressure
2. Smooth muscles constrict in the venous wall, increases venous pressure and pushes blood back
towards the heart
3. Combo of venous valves opening and closing and skeletal muscle contraction (serves a venous pump),
that pumps blood towards the heart
, when is blood under high pressure? - Answer-when it comes out of the left ventricle
what is the thickness of blood? - Answer-viscosity
what factors affect blood viscosity? - Answer--obesity
-T2DM
-metabolic syndromes
- High LDL
what does high blood viscosity contribute to? - Answer-blood resistance
which cholesterol are associated with higher blood viscosity? - Answer-LDL
which cholesterol is associated with lower blood viscosity? - Answer-HDL
what 3 blood vessel contributions, contribute to BP resistance? - Answer--Vessel diameter
-Vessel length
-Blood viscosity
what condition causes plaque in the arteries, and decreases the diameter of the arteries, ultimately adds
to resistance, and causes blood pressure to rise? - Answer-atherosclerosis
when does blood pressure start to decrease? - Answer-as blood moves down the systemic circulation
the blood pressure decreases
NURSING 245
what are the basic functions of the circulatory system? - Answer-delivery, removal, and assisting
What are the more specific functions of the circulatory system? - Answer--Delivery of oxygen, nutrients,
hormones, electrolytes, and other essentials to the cells
-Removal of carbon dioxide, metabolic wastes, and other detritus (non-living particulate organic matter)
from cells
-Assists in fighting infection
what are the two major divisions of the circulatory system? - Answer-pulmonary circulation
systemic circulation
which major circulatory division delivers blood to the lungs? - Answer-pulmonary division
which major circulatory division delivers blood to peripheral circulation- other tissues in the body? -
Answer-systemic circulation
,what is the third most often over looked circulatory division? - Answer-coronary circulation
which major circulatory division involves the body feeding the coronary circulation before the coronary
circulation feeds the body?
i.e. Think of the blood as another organ, its essential to the body - Answer-coronary circulation
which organ is basically a pump? - Answer-the heart
which organ function to moves blood throughout the arterial tree? - Answer-the heart
which elements make up the circulatory structure? - Answer--heart
-blood
-arteries
-veins
-arterioles
-veinules
-capillaries
what is a closed system until something opens it up ex: a cut, wound? - Answer-a circulatory system
what is the bodies best defense against infection? - Answer-intact skin
which circulatory structure transports blood, but lacks elasticity? - Answer-arteries
which circulatory structure regulates blood flow (arterial pressure)? - Answer-arterioles
,which circulatory structure is a site of exchange? - Answer-capillaries
which circulatory structure is to collect blood from the capillaries? - Answer-Venules
which circulatory structure is to transport blood back to the heart, serve as a major reservoir for the
blood (very elastic hold lg volume of fluid) ? - Answer-veins
true or false
A vein distention produces a large increase in venous volume - Answer-true
on average about bout how many liter of blood are from cardiac output? - Answer-5L/ minute
what percentage of blood is in the pulmonary circulation? - Answer-9%
what percentage of blood is in the heart? - Answer-7%
what percentage of blood is in the systemic circulation? - Answer-64%
what makes blood flow? - Answer-Force that drives flow is greater than the resistance (a pressure
gradient)
what 3 mechanism return blood back to the heart - Answer-1. negative arterial pressure
2. Smooth muscles constrict in the venous wall, increases venous pressure and pushes blood back
towards the heart
3. Combo of venous valves opening and closing and skeletal muscle contraction (serves a venous pump),
that pumps blood towards the heart
, when is blood under high pressure? - Answer-when it comes out of the left ventricle
what is the thickness of blood? - Answer-viscosity
what factors affect blood viscosity? - Answer--obesity
-T2DM
-metabolic syndromes
- High LDL
what does high blood viscosity contribute to? - Answer-blood resistance
which cholesterol are associated with higher blood viscosity? - Answer-LDL
which cholesterol is associated with lower blood viscosity? - Answer-HDL
what 3 blood vessel contributions, contribute to BP resistance? - Answer--Vessel diameter
-Vessel length
-Blood viscosity
what condition causes plaque in the arteries, and decreases the diameter of the arteries, ultimately adds
to resistance, and causes blood pressure to rise? - Answer-atherosclerosis
when does blood pressure start to decrease? - Answer-as blood moves down the systemic circulation
the blood pressure decreases
