NUR 300 peripheral vascular system and
lymphatic system UPDATED ACTUAL
Questions and CORRECT Answers
veins parallel the arteries but what is opposite - CORRECT ANSWER but direction of
flow is the opposite
differences between arteries and veins
pressure:
walls:
blood flow control: - CORRECT ANSWER pressure: Arteries- high pressure system--
heart pumps O2 rich blood throughout the arteries to tissue
veins- low pressure system-- absorbs CO2 and waste product from the periphery
walls: Arteries- walls have elastic fibers which stretch with systole and recoil with diastole
Veins- capacitance vessels- walls thinner than arteries, larger diameter, and more distensible
blood flow control: Arteries- walls have vascular smooth muscle that contract and dilate
Veins- blood flow is controlled by: - contracting skeletal muscles
- pressure gradient caused by breathing (inspiration decreases thoracic pressure and increases abd
pressure)
- paired intraluminal semilunar valves ensure unidirectional flow (opens towards the heart; closes
when filling to prevent backflow)
lymphatic system - CORRECT ANSWER completely separate vessel system, retrieves
excess fluid from tissue spaces and returns it to the bloodstream
functions of the lymphatic system - CORRECT ANSWER - conserve fluid and plasma
proteins that leak out of the capillaries
- form a major part of the immune system that defends the body against disease
- absorb lipids from the intestinal tract
, lymph nodes - CORRECT ANSWER small oval clumps of lymph tissue
- deep and superficial
- filter fluid and microorganisms
- pathogens are exposed to B and T lymphocytes in the lymph nodes
where are pathogens exposed to B and T lymphocytes - CORRECT ANSWER in the
lymph nodes
lymphatic system related organs: spleen - CORRECT ANSWER destroy old RBCs,
produce antibodies, store RBCs and filter microorganisms from blood
lymphatic system related organs: tonsils (palatine, adenoid, and lingual) - CORRECT
ANSWER respond to local inflammation
lymphatic system related organs: thymus - CORRECT ANSWER flat, pink-gray gland
located in superior mediastinum behind sternum and in front of aorta; large in fetus and young
child, atrophies after puberty. Develops T cells
hypercoagulable states and vein wall trauma lead to what - CORRECT
ANSWER increased risk for venous diseaes
dilated and tortuous (varicose) veins create what - CORRECT ANSWER incompetent
valves leading to increased venous pressure, which further dilates the vein
what happens to peripheral blood vessels with age - CORRECT ANSWER more rigid with
age, resulting in arteriosclerosis
what happens to lymphatic tissue with age - CORRECT ANSWER loss of lymphatic tissue
leads to fewer numbers of lymph nodes in older people and to decrease in size of remaining
nodes
lymphatic system UPDATED ACTUAL
Questions and CORRECT Answers
veins parallel the arteries but what is opposite - CORRECT ANSWER but direction of
flow is the opposite
differences between arteries and veins
pressure:
walls:
blood flow control: - CORRECT ANSWER pressure: Arteries- high pressure system--
heart pumps O2 rich blood throughout the arteries to tissue
veins- low pressure system-- absorbs CO2 and waste product from the periphery
walls: Arteries- walls have elastic fibers which stretch with systole and recoil with diastole
Veins- capacitance vessels- walls thinner than arteries, larger diameter, and more distensible
blood flow control: Arteries- walls have vascular smooth muscle that contract and dilate
Veins- blood flow is controlled by: - contracting skeletal muscles
- pressure gradient caused by breathing (inspiration decreases thoracic pressure and increases abd
pressure)
- paired intraluminal semilunar valves ensure unidirectional flow (opens towards the heart; closes
when filling to prevent backflow)
lymphatic system - CORRECT ANSWER completely separate vessel system, retrieves
excess fluid from tissue spaces and returns it to the bloodstream
functions of the lymphatic system - CORRECT ANSWER - conserve fluid and plasma
proteins that leak out of the capillaries
- form a major part of the immune system that defends the body against disease
- absorb lipids from the intestinal tract
, lymph nodes - CORRECT ANSWER small oval clumps of lymph tissue
- deep and superficial
- filter fluid and microorganisms
- pathogens are exposed to B and T lymphocytes in the lymph nodes
where are pathogens exposed to B and T lymphocytes - CORRECT ANSWER in the
lymph nodes
lymphatic system related organs: spleen - CORRECT ANSWER destroy old RBCs,
produce antibodies, store RBCs and filter microorganisms from blood
lymphatic system related organs: tonsils (palatine, adenoid, and lingual) - CORRECT
ANSWER respond to local inflammation
lymphatic system related organs: thymus - CORRECT ANSWER flat, pink-gray gland
located in superior mediastinum behind sternum and in front of aorta; large in fetus and young
child, atrophies after puberty. Develops T cells
hypercoagulable states and vein wall trauma lead to what - CORRECT
ANSWER increased risk for venous diseaes
dilated and tortuous (varicose) veins create what - CORRECT ANSWER incompetent
valves leading to increased venous pressure, which further dilates the vein
what happens to peripheral blood vessels with age - CORRECT ANSWER more rigid with
age, resulting in arteriosclerosis
what happens to lymphatic tissue with age - CORRECT ANSWER loss of lymphatic tissue
leads to fewer numbers of lymph nodes in older people and to decrease in size of remaining
nodes
