Blood quiz
Which of the following is not one of the three main factors influencing blood pressure?
A) emotional state Answer (A) emotional state B) peripheral resistance C) cardiac output D)blood volume
Which of the following blood pressure readings would be indicative of hypertension?
A) 120/80 in a 30-year-old man B) 140/90 in a 70-year-old woman C) 170/96 in a 50-year-old man D) 110/60 in a 20-year-old woman Answer (C) 170/96 in a 50 year old man
Select the correct statement about factors that influence blood pressure.
A) An increase in cardiac output corresponds to a decrease in blood pressure, due to the increased delivery. B) Systemic vasodilation would increase blood pressure, due to diversion of blood to essential areas. C) Excess protein production would decrease blood pressure. D) Excess red cell production would cause a blood pressure increase. Answer (D) Excess red cell production would cause a blood pressure increase.
Select the correct statement about blood flow.
A) It is greatest where resistance is highest. B) It is measured in mm Hg. C) It is relatively constant through all body organs. D) Blood flow through the entire vascular system is equivalent to cardiac output. Answer (D) Blood flow through the entire vascular system is equivalent to cardiac output.
Which of the following is true about veins
A) Veins have a small lumen in relation to the thickness of the vessel wall. B) Up to 35% of total body blood is in venous circulation at any given time. C) Venous valves are formed from the tunica media. D) Veins are called capacitance vessels or blood reservoirs. Answer (D) veins are called capacitance vessels or blood reservoirs
Factors that aid venous return include all except
A) activity of skeletal muscles B) venous valves C) pressure changes in the thorax D) urinary output Answer (D) Urinary output
Which of the following is the most significant source of blood flow resistance?
A) blood vessels type B) blood viscosity C) total blood vessel length D) blood vessel diameter Answer (D) Blood vessel diameter
Peripheral resistance ________.
A) decreases with increasing length of the blood vessel B) increases as blood vessel diameter increases C) increases as blood viscosity increases D) is not a major factor in blood pressure in healthy individuals Answer(C) Increases as blood viscosity increases
The pulse pressure is ________.
A) diastolic pressure plus 1/3 (systolic pressure plus diastolic pressure) B) systolic pressure divided by diastolic pressure C) systolic pressure plus diastolic pressure D) systolic pressure minus diastolic pressure Answer (D) systolic pressure minus diastolic pressure
From what artery does the right common carotid artery arise?
A) external carotid artery B) aortic arch C) internal carotid artery D) brachiocephalic trunk Answer (D) Brachiocephalic trunk
A patient with essential hypertension might have pressures of 200/120 mm Hg. This hypertensive state could result in all of the following changes except
A) increased incidence of coronary artery disease B) increased work of the left ventricle C) increased damage to blood vessel endothelium D) decreased size of the heart muscle Answer (D) decreased size of heart muscle
The influence of blood vessel diameter on peripheral resistance is
A) insignificant because vessel diameter does not vary B) significant because resistance is directly proportional to the blood vessel diameter C) the only factor that influences resistance D) significant because resistance is inversely proportional to the fourth power of the vessel radius Answer (D) significant because resistance is inversely proportional to the fourth power of the vessel radius
Which of the following do not influence arterial pulse rate?
A) postural changes B) emotions C) the vessel selected to palpate D) activity Answer (C) The vessel selected to palpate
Aldosterone will ________.
A) promote a decrease in blood volume B) decrease sodium reabsorption C) promote an increase in blood pressure D) result in a larger output of urine Answer(C) promote an increase in blood pressure
Arteriolar blood pressure increases in response to all but which of the following?
A) rising blood volume B) increasing heart rate C) falling blood volume Answer (C) falling blood volume D) increasing stroke volume E) all of these
Which organ's blood flow pattern results in low oxygen levels causing vasoconstriction and high oxygen levels causing vasodilation
A) skeletal muscles B) lungs Answer (B) Lungs C) liver D) heart
Blood from the lower limbs is returned to the heart via the
A) superior vena cava B) abdominal aorta C) thoracic aorta D) inferior vena cava Answer (D) Inferior vena cava
Substances absorbed in the intestines would be routed to the liver via the
A) suprarenal veins B) inferior vena cava C) hepatic portal vein Answer (C) Hepatic portal vein D) abdominal aorta
Modified capillaries that are lined with phagocytes are called ________.
A) thoroughfare channels B) sinusoids Answer (B) Sinusoids C) sinuses D) anastomoses
Artery usually ausculated to take the blood pressure
Answer Brachial artery
Site where the velocity of blood is the slowest
Answer Capillaries
site where exchanges of food and gases are made
Answer Capillaries
Which artery branches into the common hepatic artery, splenic artery, and left gastric artery
Answer Celiac trunk
Which vessel sends branches to the thyroid, larynx, tongue, skin, and muscles of the anterior face and posterior scalp
Answer External carotid arteries
Major artery of the thigh
Answer Femoral artery
Which vein becomes the external iliac vein as it enters the pelvis
Answer Femoral vein
Vessel commonly used as a coronory bypass vessel
Answer Great Saphenous vein
Which vein is the longest in the body and empties into the femoral vein
Answer Great saphenous vein
Which artery serves the distal part of the large intestine via its left colic, sigmoidal, and superior rectal branches
Answer Inferior Mesenteric artery
Site where the velocity of blood is teh fastest
Answer Large Arteries
Site where blood pressure is greatest
Answer Large arteries
Site where blood pressure is lowest
Answer Large veins
Site where the blood volume is greatest
Answer Large veins
Carries oxygen poor blood to the lungs
Answer Pulmonary trunk
Carries oxygen rich blood from the lungs
Answer Pulmonary vein
Drains an upper extremity, a deep vein
Answer Subclavian vein
Which artery serves nearly all of the small intestine via the intestinal arteries and most of the large intestine via the ileocolic, middle colic, and right colic arteries
Answer Superior Mesenteric artery
Receives blood from all areas superior to the diaphragm, except the heart wall
Answer Superior vena cava
Site where resistance to blood flow is greatest
Answer arterioles
Site that is the major determinant of peripheral resistance
Answer Arterioles
Which of the following chemicals does not help regulate blood pressure
) ADH B) atrial natriuretic peptide C) nitric acid Answer (C) Nitric acid D) angiotensin II
Which of the following processes provides a long-term response to changes in blood pressure
) renal regulation Answer (A) Renal regulation B) neural controls C) baroreceptor-initiated reflexes D) chemoreceptor-initiated reflexes
Runs through the armpit area, giving off branches to the axillae, chest wall. and shoulder girdle
Answer Axillary artery
Drains the scalp
Answer External jugular vein
Hypotension is generally considered systolic blood pressure that is below 100 mm Hg.
True Answer True False
The carotid sinus reflex protects the blood supply to the brain, whereas the aortic reflex is more concerned with maintaining adequate blood pressure in the systemic circuit as a whole.
True Answer True False
The cerebral arterial circle (circle of Willis) is an arterial anastomosis.
True Answer True False