exam 6 Flashcards
Which of the following is NOT a major function of the blood?
a) Transportation of nutrients
b) Regulation of blood pH
c) Protection against infectious disease
d) Transportation of heat
e) Production of oxygen
Production of oxygen
Which of the following is NOT a true statement regarding blood?
a) The normal average temperature of blood is around 100.4o F.
b) The normal pH range for blood is 7.35-7.45.
c) Hemocytoblasts are a common component of circulating blood.
d) The primary circulating blood cell is the RBC.
e) Blood is a liquid connective tissue consisting of cells and a liquid extracellular matrix.
Hemocytoblasts are a common component of circulating blood.
The hematocrit is a measure of the percentage of whole blood occupied by
a) WBCs.
b) platelets.
c) RBCs.
d) plasma.
e) plasma proteins.
RBCs
The process by which the formed elements of the blood develop is called
a) hematospermia.
b) hemopoiesis.
c) thrombocytosis.
d) hemostasis.
e) polycythemia.
hemopoiesis.
Which of the following hormones stimulates proliferation of red blood cells in red bone marrow?
a) erythropoietin (EPO)
b) thrombopoietin (TPO)
c) human growth hormone (hGH)
d) calcitonin (CT)
e) follicle-stimulating hormone (FSH)
erythropoietin (EPO)
Which of the following blood cells phagocytizes antigen-antibody complexes and is effective against parasitic worms?
a) Eosinophil
b) Monocyte
c) Lymphocyte
d) Basophil
e) Neutrophil
Eosinophil
The major function of red blood cells is
a) nutrient transport.
b) cytokine stimulation.
c) blood cell proliferation.
d) gas transport.
e) disease resistance.
gas transport.
Which of the following blood components is involved in reducing blood loss from a damaged blood vessel?
a) Erythrocyte
b) Platelet
c) Lymphocyte
d) Basophil
e) Neutrophil
Platelet
Which of following correctly lists the sequence of steps that occur during hemostasis in response to a damaged blood vessel?
a) vascular spasm, clotting, polycythemia
b) hemolysis, vascular spasm, platelet plug formation
c) emigration, clotting, hemolysis
d) vascular spasm, platelet plug formation, clotting
e) anemia, hemogenesis, platelet plug formation
vascular spasm, platelet plug formation, clotting
Which of the following situations could result in maternal antibodies attacking fetal blood cells during a second pregnancy?
a) Mom is Rh negative and fetus is Rh negative
b) Mom is Rh negative and fetus is Rh positive
c) Mom is Rh positive and fetus is Rh negative
d) Mom is Rh positive and fetus is Rh positive.
Mom is Rh negative and fetus is Rh positive
Which of the following terms identifies the anatomical region found between the lungs that extends from the sternum to the vertebral column and from the first rib to the diaphragm?
a) Epicardium
b) Abdominal cavity
c) Pericardium
d) Mediastinum
e) Thoracic cavity
Mediastinum
The membrane that surrounds and protects the heart is called the
a) pericardium.
b) pleura.
c) myocardium.
d) mediastinum.
e) endocardium.
pericardium
Which of the following is used to reduce friction between the layers of membranes surrounding the heart?
a) Synovial fluid
b) Endocardium
c) Pleural fluid
d) Pericardial fluid
e) Capillary endothelium
Pericardial fluid
The visceral layer of the serous pericardium is also considered to be the
a) epicardium
b) myocardium
c) endocardium
d) fibrous pericardium
e) None of the answer selections is correct
epicardium
Which layer of the heart wall consists of cardiac muscle tissue?
a) Epicardium
b) Pericardium
c) Myocardium
d) Endocardium
e) Hypocardium
Myocardium
Through which structure does blood pass from the right atrium to the right ventricle?
a) Bicuspid valve
b) Interventricular septum
c) Tricuspid valve
d) Mitral valve
e) Ascending aorta
Tricuspid valve
Blood leaving the left ventricle passes through which of the following structures?
a) Right atrium
b) Interventricular septum
c) Bicuspid valve
d) Aortic semilunar valve
e) Pulmonary semilunar valve
Aortic semilunar valve
Why is the myocardium of the left ventricle thicker than the myocardium of the right ventricle?
The left ventricle muscular wall is thicker than the right ventricle because it has to generate higher pressure to overcome the greater resistance of the longer systemic circulation route versus the shorter pulmonary circulation route. Basically, the more work a muscle does, the larger it gets.
Contraction of the ventricles of the heart leads to blood moving directly
a) into arteries.
b) into capillaries.
c) into veins.
d) through an atrioventricular valve.
e) through the apex.
into arteries.
Which of the following chambers of the heart contains deoxygenated blood?
a) Left atrium and left ventricle
b) Left atrium only
c) Right atrium and right ventricle
d) Right ventricle only
e) Left atrium and right ventricle
Right atrium and right ventricle
Which of the following blood vessels carries blood from the tissues back to the heart?
a) arteries
b) arterioles
c) aorta
d) veins
e) capillaries
veins
The bronchial arteries arise from the
a) left subclavian artery
b) brachiocephalic trunk
c) right subclavian artery
d) left common carotid artery
e) thoracic aorta
thoracic aorta
In order to supply nourishment to liver tissue, which vessel must deliver blood to the organ?
a) hepatic artery
b) hepatic vein
c) hepatic portal vein
d) superior mesenteric artery
e) splenic artery
hepatic artery
Capillaries are also referred to as
a) exchange vessels.
b) vasoconstrictors.
c) vasodilators.
d) pressure reservoirs.
e) distributing vessels.
exchange vessels.
Which of the following is the most important method of capillary exchange?
a) diffusion
b) facilitated diffusion
c) bulk flow
d) primary active transport
e) secondary active transport
diffusion
How might drugs that inhibit angiogenesis and are used to treat tumors, increase the risk of a heart attack in an older individual with atherosclerosis?
Angiogenesis, the growth of new blood vessels, is an important process in developing collateral circulation around partially obstructed (due to atherosclerotic plaque) coronary arteries. These new blood vessels act to conduct blood to cardiac muscle tissue when the circulation in the original vessels is impaired by the plaques. If angiogenesis is inhibited in an effort to “starve” a tumor, the new blood vessel growth in the heart may also be inhibited thus leading to a greater risk of a heart attack if the original coronary artery becomes completely clogged.
Which of the following types of tissues contains continuous capillaries?
a) skeletal muscle
b) smooth muscle
c) connective tissue
d) lungs
e) all of these choices
all of these choices
The volume of blood that circulates through the systemic (or pulmonary) blood vessels per minute is called
a) stroke volume.
b) tidal volume.
c) cardiac output.
d) cardiac reserve.
e) total peripheral resistance.
cardiac output.
Cardiac output is dependent on both
a) heart rate and stroke volume.
b) stroke volume and systemic vascular resistance.
c) heart rate and systemic vascular resistance.
d) blood type and stroke volume.
e) blood pressure and heart rate
heart rate and stroke volume.
The cardiovascular center is located
a) in the thoracic cavity.
b) in the cerebral cortex.
c) in the cerebellum.
d) in the medulla oblongata.
e) in the hypothalamus.
in the medulla oblongata.
Which of the following is NOT a function of the lymphatic and immune system?
a) Draining excess interstitial fluid
b) Maintaining water homeostasis in the body
c) Transporting dietary lipids
d) Carrying out immune responses
e) All of these are functions of the lymphatic and immune system
Maintaining water homeostasis in the body
What is the major difference between lymph and interstitial fluid?
a) Composition of electrolytes
b) White blood cells are present in lymph
c) Location
d) Types of proteins present
e) Red blood cells are present in interstitial fluid
Location
Which of the following is NOT considered an organ of the immune system?
a) Spleen
b) Lymph node
c) Red bone marrow
d) Thymus
e) Pancreas
Pancreas
Describe how lymphatic capillaries are one-way only vessels.
The ends of the endothelial cells in the wall of the lymphatic capillary overlap. When pressure is higher in the interstitial fluid than in the lymph, the cells separate slightly allowing interstitial fluid into the vessel. When pressure is greater inside, the cells are tightly packed, not allowing the lymph to cross back into the interstitial fluid.
The left subclavian vein receives lymph from the
a) Left axillary vein
b) Lumbar trunk
c) Jugular trunk
d) Thoracic duct
e) Right lymphatic duct
Thoracic duct
Which organ produces a hormone that promotes maturation of T cells?
a) Spleen
b) Lymph node
c) Red bone marrow
d) Thymus
e) Pancreas
Thymus
Which of the following is a function of the lymphatic system?
a) Drain excessive interstitial fluid
b) Transport dietary lipids
c) Carry out immune responses
d) All of these are functions of the lymphatic system
e) None of these are functions of the lymphatic system
All of these are functions of the lymphatic system
Which of the following is a function of the spleen?
a) Removes worn out blood cells
b) Circulates lymph
c) Cleanses interstitial fluid
d) Cleanses lymph
e) Traps microbes with mucus
Removes worn out blood cells
Which of the following is NOT a sign of inflammation?
a) Redness
b) Pain
c) Heat
d) Mucus production
e) Swelling
Mucus production
Which of the following intensifies the effect of interferons and promotes the rate of repair?
a) Complement system
b) Acute inflammation
c) Fever
d) Chronic inflammation
e) Pus formation
Fever
