Lecture Exam 1

A  pushes against the atrioventricular valves and opens them.

B  pushes against the semilunar valves and closes them.

C  fills the cusps of the atrioventricular valve causing opening of the bicuspid and closure of the tricuspid.

D  fills the cusps of the semilunar valves, causing them to expand and block the backflow of blood

E  pushes against the semilunar valves and opens them.

A  decrease the oxygen carrying capacity of the blood.

B  increase the carbon dioxide carrying capacity of the blood.

C  increase the oxygen carrying capacity of the blood.

D  increase the viscosity of the blood.

E  decrease the blood pressure in the arteries.

A  take blood from the coronary circulation to the right atrium.

B  guide the aorta out of the heart.

C  connect the top and bottom halves of the heart.

D  guide the inferior vena cava into the right atrium.

E  shunt blood from the right atrium to the left atrium.

A  fast voltage-gated sodium channels and fast voltage-gated calcium channels.

B  slow voltage-gated sodium channels and fast voltage-gated calcium channels.

C  slow voltage-gated sodium channels and slow voltage-gated calcium channels.

D  fast voltage-gated sodium channels and slow voltage-gated calcium channels.

A  Right atrioventricular valve

B  None of the choices is correct.

C  Left atrioventricular valve

D  Aortic semilunar valve

E  Pulmonary semilunar valve

A  increase.

B  decrease.

A  action potentials are stimulated by internal stores of acetylcholine.

B  action potentials fire spontaneously.

C  action potentials always occur at exactly the same frequency.

D  all filaments contract and relax with a high degree of synchrony.

E  action potentials are initiated by the autonomic nervous system.

A  heme

B  iron

C  globin

D  calcium

A  age.

B  altitude.

C  sex.

D  All of the choices are correct.

A  increases, and there is fluid retention in the interstitial space.

B  decreases, and there is fluid retention in the interstitial space.

C  decreases, and so blood volume is abnormally high.

D  increases, and so blood volume is abnormally high.

A  Cardiac muscle cell

B  Skeletal muscle cell

A  c

B  b

C  e

D  a

E  d

A  a, b, c

B  a, b, d

C  a, e, f

D  a, d, e

E  a, b, c, e

A  the wrong blood type was used.

B  the recipient had type AB blood.

C  the donor had type O blood.

D  there were no agglutinins (antibodies) in the recipient blood.

A  Prevention

B  Regulation

C  Protection

D  Transportation

A  liver and spleen.

B  liver.

C  spleen.

D  lung.

E  spleen and lung.

A  are not red.

B  can form a rouleau when moving through a capillary.

C  are actually dead.

D  have lots of inclusion molecules.

E  lack a nucleus and organelles.

A  indirectly, directly

B  indirectly, indirectly

C  directly, indirectly

D  directly, directly

A  Lymphocytes and monocytes

B  Neutrophils, basophils, eosinophils, and monocytes

C  Lymphocytes

D  Neutrophils

E  Basophils and eosinophils

A  Presence of skeletal muscle tissue in the heart skeleton

B  Presence of papillary muscles in the ventricles

C  Absence of oxygenated blood in the atria

D  Arrangement of cardiac muscle in the heart wall

E  Negative pressure inside the ventricles

A  FALSE

B  TRUE

A  platelet attractant.

B  platelet repellant.

A  hematopoiesis, 120

B  hemostasis, 9

C  hematopoiesis, 9

D  hemostasis, 120

A  late erythroblasts.

B  myeloid stem cells.

C  platelets.

D  promegakaryocytes.

E  reticulocytes.

A  permit the passage of blood in one direction.

B  are only used in the fetal heart.

C  stabilize and hold the arteries leaving the heart.

D  separate the right and left sides of the heart.

E  direct the conduction impulse through the heart muscle.

A  lymphocyte.

B  monocyte.

C  eosinophil.

D  basophil.

E  neutrophil.

A  TRUE

B  FALSE

A  not change.

B  decrease.

C  increase.

A  sodium moves out through slow voltage-gated channels.

B  calcium moves out through slow voltage-gated channels.

C  potassium comes in through fast voltage-gated channels.

D  potassium moves out through fast voltage-gated channels.

E  calcium comes in through fast voltage-gated channels.

A  hemopoiesis.

B  leukopenia.

C  agglutination.

D  leukocytosis.

E  erythroblastosis.

A  Lymphocyte

B  Neutrophil

C  Monocyte

D  Eosinophil

E  Basophil

A  acidic, glycogen

B  basic, glucose

C  acidic, glucose

D  acidic, proteins

E  basic, proteins

A  c, a, b, e, d, f

B  a, c, d, b, e, f

C  c, a, b, e, d, f

D  a, b, c, e, d, f

E  c, a, e, b, d, f

F  c, b, a, d, e, f

A  2

B  None of the choices is correct.

C  Highly variable, depending on the heart beat rate

D  4

E  1

A  two

B  no

C  three

D  a highly variable number of

E  six

A  by a single ventricle in one minute.

B  by both ventricles in one hour.

C  by both ventricles in one minute.

D  by a single ventricle in one hour.

E  by the left ventricle into the aorta in one beat.

A  eliminate blood pressure spikes.

B  equalize the pressure in the great vessels.

C  lubricate membranes of the pericardium.

D  slow the heart rate.

E  All of the choices are correct.

A  dark blue

B  dark red

C  light blue

D  bright red

A  tricuspid valve.

B  pectinate muscles.

C  tendinous cords.

D  trabeculae carneae.

E  conus arteriosus.

A  f, g, d, c, b, a, e

B  b, a, d, c, f, g, e

C  d, b, a, c, f, g, e

D  c, d, a, f, b, g, e

E  c, d, a, b, f, g, e

A  collagen with the assistance of prothrombin.

B  prostacyclin with the assistance of activated factor V.

C  proconvertin with the assistance of factor IX.

D  collagen with the assistance of von Willebrand factor.

E  prostacyclin with the assistance of thromboxane A2.

A  albumins.

B  fibrinogens.

C  endocrine hormones.

D  prothrombins.

E  globulins.

A  Pulmonary arteries

B  Pulmonary veins

C  Superior vena cava

D  Inferior vena cava

E  Pulmonary trunk

A  increasing of the heart rate above its inherent rhythm by parasympathetic stimulation.

B  decreasing of the heart rate below its inherent rhythm by sympathetic stimulation.

C  increasing of the heart rate above its inherent rhythm by sympathetic stimulation.

D  decreasing of the heart rate below its inherent rhythm by parasympathetic stimulation.

A  smallest, prominent nuclei

B  smallest, no nucleus

C  largest, no nucleus

D  largest, prominent nuclei

A  Sodium is rapidly diffusing out of atrial muscle cells.

B  Sodium channels are beginning to open in ventricular cells and calcium is entering through slow channels in atrial cells.

C  Potassium is entering atrial cells and sodium is leaving ventricular cells.

D  Calcium is entering and potassium is leaving ventricular cells.

A  Visceral circuit

B  Systemic circuit

C  Pulmonary circuit

D  Coronary circuit

A  action potentials within the cusps of the valves.

B  pressure changes of alternating contraction and relaxation during the cardiac cycle.

C  contraction of the smooth muscle in the walls of the great vessels leaving the heart.

D  contraction and relaxation of papillary muscles that pull on heart strings.

A  mediastinum.

B  external layer of the fibrous pericardium.

C  parietal layer of the serosal pericardium.

D  visceral layer of the serosal pericardium.

E  myocardium.

A  b, d, e

B  a, c, e

C  a, b, e

D  a, c, d

E  b, c, e

A  a, b, c, d

B  a, d

C  b, d

D  a, c, d

E  e

A  clotting factors, hormones

B  lipids, heavy metals

C  iron ions, antibodies

D  antibodies, lipids

E  oxygen, clotting proteins

A  55

B  25

C  45

D  75

E  35

A  c, e, g

B  a, b, c, g

C  a, b, c, e, f

D  a, c, d, f

E  c, d, g

A  extrinsic

B  common

C  intrinsic

A  depolarized as potassium exits and calcium enters.

B  hyperpolarized as potassium enters and calcium exits.

C  depolarized as potassium enters and calcium exits.

D  hyperpolarized as sodium and calcium exit.

E  repolarized as sodium enters and calcium exits.

A  Isovolumetric contraction

B  Atrial contraction and ventricular filling

C  Ventricular ejection

D  Late ventricular diastole

E  Isovolumetric relaxation

A  positive inotropic agent.

B  positive chronotropic agent.

C  negative inotropic agent.

D  negative chronotropic agent.

A  anaerobic metabolism using myoglobin, creatin kinase, and ketone bodies.

B  aerobic metabolism using glycolysis of glycogen to meet most ATP demands.

C  aerobic metabolism using many mitochondria and a rich supply of myoglobin.

D  anaerobic metabolism using glycolytic enzymes to quickly generate ATP.

A  Relaxation of the right ventricle

B  Contraction of the right ventricle

C  Relaxation of the left atrium

D  Contraction of the right atrium

E  Contraction of the left atrium