Blood flow through a capillary bed is regulated by precapillary sphincters? True or False
Large veins, medium veins, and venules have valves to prevent the backflow of blood. True or False
Blood flow is pulsatile in arteries and veins but it is steady in capillaries? True or False
Generalized vasomotion can raise or lower blood pressure throughout the body. True or False
Increased capillary filtration, reduced reabsorption, or obstruction of lymphatic drainage can lead to edema. True or False
Most tissue fluid is reabsorbed by the lymphatic system. True or False
Decompensated shock is normally corrected by the body's homeostatic mechanisms. True or False
The pulmonary circuit is the only route in which arteries carry less oxygen than veins. True or False
Lung tissue receives nourishment and waste removal from the pulmonary circuit. True or False
The greatest outflow from the dural venous sinuses is via the internal jugular vein. True or False
The three primary branches of the celiac trunk are the common hepatic, left gastric, and spenic. True or False
Blood filtered through the hepatic sinusoids exits the liver via the hepatic veins? True or False
Arterial flow to the lower limb comes from the external iliac artery? True or False
The brachial vein is the most common site of blood pressure measurement with the sphygmomanometer? True or False
The radial artery is lateral to the ulnar artery. True or False
Arteries are relatively strong resilient tissue and therefore are called the _____ of the cardiovascular system.
______ have the thickest tunica media
The outermost wall of an artery or veins is called the _____ and in large arteries and veins contains the ____
Tunica externa; Vasa Vasorum
Most blood is in the?
These are all possible circulatory routes from the heart except? A. Heart, arteries, capiullary bed, veins, heart B. Heart, arteries, capiullary bed, vein, capillary bed, veins, heart C. Heart, arteries, capiullary bed, vein, capillary bed, arteries heart D. Heart, arteries, Arterial E. Heart, arteries,
C) Heart, arteries, capiullary bed, vein, capillary bed, arteries heart
Vasomotion is associated with the presence of? A. Collagen and elastic tissue in the tunica media B. Elastic tissue in the tunica externa C. Endothelium in the tunica interna D. Smooth muscle in the tunica media E. Fenestrations in the tunica externa
D) Smooth muscle in the tunica media
In people who stand for long periods, blood tends to pool in the lower limbs and this may result in varicose veins. Varicose veins are caused by
Failure of the venous valves
This figure shows changes in blood pressure relative to distance from the heart. What would the approximate blood pressure in a blood vessel leaving the stomach for a person lying on her back (not standing)?
below 20 mm Hg
What is the mean arterial pressure for a person with 110 and 65 mm Hg as systolic and diastolic pressure respectively? A. 45 mm Hg B. 80 mm Hg C. 87.5 mm Hg D. 90 mm Hg E. 175 mm Hg
B. 80 mm Hg
The velcity of blood flow decreases when? A. Viscosity increases B. Blood pressure increases C. Vessel radius increases D. After load increases E. Vasomotion decreases
A Viscosity increases
The medullary ischemic reflex results in
-increased circulation to the brain
-reduced circulation to the brain
-ischemia of the medulla oblongata
-increased circulation to the adrenal medulla
-hormone secretion by the adrenal medulla when perfusion drops
Increased circulation to the brain
___ has the most important effect on blood velocity.
Reactive hyperemia is a result of ___ to increase perfusion into a tissue.
All of these increase blood pressure except A. Norepinephrine B. Antidiuretic hormone (ADH) C. Angiotensin II D. Aldosterone E. Atrial natriuretic peptide
E. Atrial natriuretic peptide
The vasomotor center of the ___ controls blood vessels throughout the body? A. Hypothalamus B. Medulla oblongata C. Spinal cord D. Cerebellum E. Cortex
B. Medulla oblongata
Hypertension is a chronic resting blood pressure higher than
___ are powerful vasoconstrictors, and ___ also increases heart rate.
Epinephrine and angiotensin II; epinephrine
These are all mechanisms of movement through the capillary wall except
most important force driving filtration at the arterial end of a capillary?
blood hydrostatic pressure
___ by the capillaries at their venous end.
-waste products are taken up
-oxygen and glucose are taken up
-oxygen and glucose are given off
-wastes are given off
-organic nutrients are taken up
waste products are taken up
most important force driving reabsportion at the venous end of a capillary?
blood colloid osmotic pressure
All of these can lead to edema except
-obstruction of lymphatic vessels
_______ would not increase capillary filtration? A. Blockage of lymphatic capillaries B. Dehydration C. Increased capillary permeability D. Dietary protein deficiency E. Obstructed venous return
A mean arterial pressure (MAP) below 60 mm Hg can cause ___, whereas a MAP above 160 mmHg can cause ___.
syncope; cerebral edema
___ does not contribute to venous return.
___ shock can be produced by hemorrhage, severe burns, or dehydration.
________ shock occurs when bacterial toxins trigger vasodilation and increase capillary permeability? A. Compensated B. Anaphylactic C. Neurogenic D. Cardiogenic E. Septic
A bee sting can trigger massive release of histamine, which causes ___ and a(n) ___ in arterial pressure.
Myocardial infarction can lead to ______shock? A. Neurogenic B. Cardiogenic C. Obstructed venous return D. Venous pooling (vascular) E. Hypovolemic
The most important force in venous flow is
The pressure generated by the heart
Blood flow to the ___ remains quite stable even when mean arterial pressure (MAP) fluctuates from 60 to 140 mm Hg.
Pulmonary arteries have ___ blood pressure compared to systemic arteries.
How many pulmonary arteries empty into the right atrium of the heart?
The lungs receive a systemic blood supply by way of the
right pulmonary artery
There are no ______in humans? A. Right and left common carotid arteries B. Right and left brachiocephalic arteries C. Right and left brachiocephalic D. Right and left subclavian veins E. Right and left subclavian arteries
B) Right and left brachiocephalic arteries
The ___ supplies 80% of the cerebrum.
-superficial temporal artery
-internal carotid artery
-anterior cerebral artery
-middle cerebral artery
Internal carotid artery
The cerebral arterial circle (circle of Willis) is? A. An anastomosis surrounding the pituitary gland B. A portal system connecting the hypothalamus with the anterior pituitary C. A short anastomosis found in the cerebellum D. Formed by the superior and inferior sagittal sinuses
A) an anastomosis surrounding the pituitary gland
From superior to inferior, the major branches of the abdominal aorta are
Celiac trunk - superior mesenteric artery - renal arteries - gonadal arteries - inferior mesenteric artery - common iliac arteries
Can Stacy Really Go In Car?
The principal venous drainage of the thoracic organs is accomplished by wa of
The azygos system
These are all tributaries of the inferior vena cava except
-the hepatic veins
-the internal and external iliac veins
-the inferior phrenic veins
-the vertebral veins
-the lumbar veins
The vertebral veins
These are all veins of the upper limb except
-the cephalic vein
-the great saphenous vein
-the basilic vein
-the median antebrachial vein
-the ulnar vein
The great saphenous vein
These are all vessels of the lower limb except
-the popliteal vein
-the posterior tbil artery
-the medial plantar artery
-the fibular vein
-the anterior interosseous artery
The anterior interosseous artery
This is the longest vein, and portions of this vein are commonly used as grafts in coronary bypass surgery.
The great saphenous vein
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