Chpt. 19 Functions of the Blood Vessels PDF

1/27/25, 12:34 AM QUIZ Ch. 19 - Functions of the Blood Vessels: Attempt review | SEC Moodle Started on Sunday, 26 January 2025, 10:34 PM State Finished Completed on Sunday, 26 January 2025, 10:34 PM Time...

1/27/25, 12:34 AM QUIZ Ch. 19 - Functions of the Blood Vessels: Attempt review | SEC Moodle Started on Sunday, 26 January 2025, 10:34 PM State Finished Completed on Sunday, 26 January 2025, 10:34 PM Time taken 9 secs Marks 0.00/25.00 Grade 0.00 out of 100.00 Question 1 Not answered Marked out of 1.00 Plasma oncotic pressure is caused primarily by: Select one: a. blood pressure. b. plasma proteins, especially albumin. c. lymph. d. electrolytes such as sodium and chloride. The correct answer is: plasma proteins, especially albumin. Question 2 Not answered Marked out of 1.00 Which of the following is true regarding the sympathetic and parasympathetic arms of the baroreceptor reflex? They carry: Select one: a. sensory information from the baroreceptors to the SA and AV nodes of the heart. b. sensory information from the SA and AV nodes to the spinal cord. c. motor information from the spinal cord to the heart and blood vessels. d. motor information from the heart and blood vessels to the aortic and carotid sinus baroreceptors. The correct answer is: motor information from the spinal cord to the heart and blood vessels. https://classroom.success.edu/mod/quiz/review.php?attempt=308245&cmid=322523 1/9 1/27/25, 12:34 AM QUIZ Ch. 19 - Functions of the Blood Vessels: Attempt review | SEC Moodle Question 3 Not answered Marked out of 1.00 If digital (finger press) pressure is exerted over the carotid sinus, you would expect: Select one: a. the sympathetics to fire, thereby increasing blood pressure. b. that the medulla oblongata will interpret the signal as high blood pressure and therefore fire the vagus nerve. c. no effect, because the baroreceptors are “crushed.” d. reflex tachycardia. The correct answer is: that the medulla oblongata will interpret the signal as high blood pressure and therefore fire the vagus nerve. Question 4 Not answered Marked out of 1.00 While “taking” a blood pressure, you record the first Korotkoff sounds as the: Select one: a. pulse pressure. b. mean arterial blood pressure. c. diastolic reading. d. systolic reading. The correct answer is: systolic reading. Question 5 Not answered Marked out of 1.00 Which of the following might result from ischemia? Select one: a. Tissue damage b. Pain c. Gangrene d. All are correct The correct answer is: Tissue damage https://classroom.success.edu/mod/quiz/review.php?attempt=308245&cmid=322523 2/9 1/27/25, 12:34 AM QUIZ Ch. 19 - Functions of the Blood Vessels: Attempt review | SEC Moodle Question 6 Not answered Marked out of 1.00 Loss of speech, paralysis, and possible death can be caused by: Select one: a. hypertension. b. rupture of a blood vessel in the brain. c. decreased oncotic pressure. d. edema. The correct answer is: rupture of a blood vessel in the brain. Question 7 Not answered Marked out of 1.00 Blood flow is slowest in the: Select one: a. aorta. b. capillaries. c. venules. d. arterioles. The correct answer is: capillaries. Question 8 Not answered Marked out of 1.00 If capillary pore size increases, as in severe burns, Select one: a. capillary filtration of water decreases. b. albumin is filtered from the capillaries and is deposited in the tissue space. c. blood volume overload develops, causing the heart to fail. d. all are correct. The correct answer is: albumin is filtered from the capillaries and is deposited in the tissue space. https://classroom.success.edu/mod/quiz/review.php?attempt=308245&cmid=322523 3/9 1/27/25, 12:34 AM QUIZ Ch. 19 - Functions of the Blood Vessels: Attempt review | SEC Moodle Question 9 Not answered Marked out of 1.00 Which of the following is most likely to develop if the pressure in the pulmonary capillaries increases? Select one: a. Pedal edema b. Pulsating jugular veins c. Pulmonary edema d. Varicose veins The correct answer is: Pulmonary edema Question 10 Not answered Marked out of 1.00 The characteristic of the arteriole that allows it to function as a resistance vessel is its: Select one: a. thin membrane. b. porous membrane. c. valves. d. smooth muscle. The correct answer is: smooth muscle. Question 11 Not answered Marked out of 1.00 Which of the following is most likely to induce carotid sinus syncope? Select one: a. Development of hypovolemic (low blood volume) shock, as in hemorrhage b. Exertion of pressure over the carotid sinus (tight collar) c. Administration of nitroglycerine (a vasodilator drug) d. Administration of a diuretic for hypertension The correct answer is: Exertion of pressure over the carotid sinus (tight collar) https://classroom.success.edu/mod/quiz/review.php?attempt=308245&cmid=322523 4/9 1/27/25, 12:34 AM QUIZ Ch. 19 - Functions of the Blood Vessels: Attempt review | SEC Moodle Question 12 Not answered Marked out of 1.00 Your patient’s initial blood pressure was 155/95 mm Hg. After 10 minutes, his blood pressure was 125/75 mm Hg. Which of the following best reflects this observation? Select one: a. Hemorrhage-induced hypotension b. Hypertensive crisis c. White coat hypertension d. The “silent killer” The correct answer is: White coat hypertension Question 13 Not answered Marked out of 1.00 Which artery is most often used to measure blood pressure? Select one: a. Carotid b. Brachial c. Femoral d. Circle of Willis The correct answer is: Brachial Question 14 Not answered Marked out of 1.00 Which of the following is a true statement regarding baroreceptors? Select one: a. Baroreceptor activation is a response to pedal edema. b. Baroreceptors are located in the carotid sinus and aortic arch. c. Baroreceptors are activated only in response to a sudden decline in blood pressure. d. All are correct. The correct answer is: Baroreceptors are located in the carotid sinus and aortic arch. https://classroom.success.edu/mod/quiz/review.php?attempt=308245&cmid=322523 5/9 1/27/25, 12:34 AM QUIZ Ch. 19 - Functions of the Blood Vessels: Attempt review | SEC Moodle Question 15 Not answered Marked out of 1.00 Edema is least likely to occur in which of the following situations? Select one: a. Plasma oncotic pressure decreases because of starvation. b. Plasma oncotic pressure decreases because the child filters large amounts of albumin into the urine. c. Plasma osmolarity increases when the patient becomes dehydrated. d. A woman with breast cancer has surgery that involves a breast amputation and removal of the lymph nodes and vessels. The correct answer is: Plasma osmolarity increases when the patient becomes dehydrated. Question 16 Not answered Marked out of 1.00 Baroreceptors: Select one: a. are found in all arterioles and sense plasma levels of CO2. b. affect respiratory rate. c. monitor [H+] and therefore regulate blood pH. d. are located in the carotid sinus and aortic arch and sense changes in blood pressure. The correct answer is: are located in the carotid sinus and aortic arch and sense changes in blood pressure. Question 17 Not answered Marked out of 1.00 Why does blood flow from the arterial side of the circulation to the venous side of the circulation? Select one: a. Capillary pressure is higher than the pressure within the large arteries and veins. b. The oncotic pressure in the venous side of the circulation is greater than the oncotic pressure on the venous side of the circulation. c. The pressure on the arterial side of the circulation is higher than the pressure on the venous side of the circulation. d. Blood volume is greater on the arterial side of the circulation than on the venous side of the circulation. The correct answer is: The pressure on the arterial side of the circulation is higher than the pressure on the venous side of the circulation. https://classroom.success.edu/mod/quiz/review.php?attempt=308245&cmid=322523 6/9 1/27/25, 12:34 AM QUIZ Ch. 19 - Functions of the Blood Vessels: Attempt review | SEC Moodle Question 18 Not answered Marked out of 1.00 ADH increases blood pressure by all of the following except: Select one: a. acting as a vasopressor. b. increasing blood volume by reabsorption of water by the kidneys. c. vasoconstriction. d. activating baroreceptors. The correct answer is: activating baroreceptors. Question 19 Not answered Marked out of 1.00 Which of the following is most responsible for the plasma oncotic pressure? Select one: a. Albumin b. Cl− c. Na+ d. HCO3− The correct answer is: Albumin Question 20 Not answered Marked out of 1.00 Which of the following exerts a vasopressor effect? Select one: a. BNP b. ADH c. ANP d. Both BNP and ANP The correct answer is: ADH https://classroom.success.edu/mod/quiz/review.php?attempt=308245&cmid=322523 7/9 1/27/25, 12:34 AM QUIZ Ch. 19 - Functions of the Blood Vessels: Attempt review | SEC Moodle Question 21 Not answered Marked out of 1.00 If the lymphatic vessels are blocked or surgically removed, Select one: a. excess fluid is filtered out of the capillary. b. plasma oncotic pressure decreases, thereby causing fluid to leak out of the capillary. c. fluid and protein accumulate in the interstitium, thereby causing edema. d. excess fluid moves into the capillary, thereby “drying out” the interstitium. The correct answer is: fluid and protein accumulate in the interstitium, thereby causing edema. Question 22 Not answered Marked out of 1.00 Which of the following drugs is most likely to increase systemic vascular resistance? Select one: a. (+) Inotropic agent b. Arteriolar constrictor c. Arteriolar dilator d. Vasodilator The correct answer is: Arteriolar constrictor Question 23 Not answered Marked out of 1.00 Both epinephrine and norepinephrine are: Select one: a. steroids. b. secreted by the adrenal medulla. c. vasodilators. d. blood pressure–lowering hormones. The correct answer is: secreted by the adrenal medulla. https://classroom.success.edu/mod/quiz/review.php?attempt=308245&cmid=322523 8/9 1/27/25, 12:34 AM QUIZ Ch. 19 - Functions of the Blood Vessels: Attempt review | SEC Moodle Question 24 Not answered Marked out of 1.00 Which of the following is true of vasoconstriction? Select one: a. Caused by parasympathetic nerve stimulation b. Increases SVR c. Caused by vagal discharge d. Generally accompanied by arteriolar dilation The correct answer is: Increases SVR Question 25 Not answered Marked out of 1.00 Which of the following is the most likely consequence of venodilation, or “pooling” of the blood in the venous circulation? Select one: a. Increased EDV (end-diastolic volume) b. Increased myocardial contraction c. Decreased venous return d. Increased blood pressure The correct answer is: Decreased venous return https://classroom.success.edu/mod/quiz/review.php?attempt=308245&cmid=322523 9/9