Lecture Exam 1

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

B  pushes against the atrioventricular valves and opens them.

C  pushes against the semilunar valves and closes them.

D  pushes against the semilunar valves and opens them.

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

A  decrease the oxygen carrying capacity of the blood.

B  increase the viscosity of the blood.

C  increase the carbon dioxide carrying capacity of the blood.

D  increase the oxygen carrying capacity of the blood.

E  decrease the blood pressure in the arteries.

A  guide the inferior vena cava into the right atrium.

B  connect the top and bottom halves of the heart.

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

D  guide the aorta out of the heart.

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

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

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

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

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

A  Pulmonary semilunar valve

B  Right atrioventricular valve

C  Aortic semilunar valve

D  None of the choices is correct.

E  Left atrioventricular valve

A  increase.

B  decrease.

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

B  action potentials fire spontaneously.

C  action potentials are stimulated by internal stores of acetylcholine.

D  action potentials are initiated by the autonomic nervous system.

E  action potentials always occur at exactly the same frequency.

A  heme

B  calcium

C  globin

D  iron

A  age.

B  altitude.

C  All of the choices are correct.

D  sex.

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

B  increases, and so blood volume is abnormally high.

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

D  decreases, and so blood volume is abnormally high.

A  Cardiac muscle cell

B  Skeletal muscle cell

A  d

B  a

C  b

D  c

E  e

A  a, b, c, e

B  a, e, f

C  a, b, c

D  a, b, d

E  a, d, e

A  the wrong blood type was used.

B  the donor had type O blood.

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

D  the recipient had type AB blood.

A  Transportation

B  Protection

C  Regulation

D  Prevention

A  liver and spleen.

B  spleen and lung.

C  lung.

D  liver.

E  spleen.

A  are actually dead.

B  are not red.

C  have lots of inclusion molecules.

D  can form a rouleau when moving through a capillary.

E  lack a nucleus and organelles.

A  indirectly, indirectly

B  directly, indirectly

C  directly, directly

D  indirectly, directly

A  Lymphocytes

B  Neutrophils

C  Neutrophils, basophils, eosinophils, and monocytes

D  Basophils and eosinophils

E  Lymphocytes and monocytes

A  Presence of skeletal muscle tissue in the heart skeleton

B  Negative pressure inside the ventricles

C  Presence of papillary muscles in the ventricles

D  Absence of oxygenated blood in the atria

E  Arrangement of cardiac muscle in the heart wall

A  TRUE

B  FALSE

A  platelet repellant.

B  platelet attractant.

A  hematopoiesis, 120

B  hemostasis, 120

C  hematopoiesis, 9

D  hemostasis, 9

A  platelets.

B  reticulocytes.

C  promegakaryocytes.

D  myeloid stem cells.

E  late erythroblasts.

A  are only used in the fetal heart.

B  direct the conduction impulse through the heart muscle.

C  permit the passage of blood in one direction.

D  stabilize and hold the arteries leaving the heart.

E  separate the right and left sides of the heart.

A  neutrophil.

B  eosinophil.

C  lymphocyte.

D  monocyte.

E  basophil.

A  FALSE

B  TRUE

A  not change.

B  decrease.

C  increase.

A  calcium comes in through fast voltage-gated channels.

B  potassium comes in through fast voltage-gated channels.

C  calcium moves out through slow voltage-gated channels.

D  sodium moves out through slow voltage-gated channels.

E  potassium moves out through fast voltage-gated channels.

A  agglutination.

B  leukopenia.

C  hemopoiesis.

D  erythroblastosis.

E  leukocytosis.

A  Basophil

B  Monocyte

C  Neutrophil

D  Eosinophil

E  Lymphocyte

A  acidic, proteins

B  acidic, glycogen

C  acidic, glucose

D  basic, proteins

E  basic, glucose

A  a, b, c, e, d, f

B  c, b, a, d, e, f

C  c, a, b, e, d, f

D  a, c, d, b, e, f

E  c, a, e, b, d, f

F  c, a, b, e, d, f

A  2

B  Highly variable, depending on the heart beat rate

C  1

D  4

E  None of the choices is correct.

A  six

B  no

C  a highly variable number of

D  two

E  three

A  by both ventricles in one hour.

B  by both ventricles in one minute.

C  by a single ventricle in one hour.

D  by a single ventricle in one minute.

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

A  equalize the pressure in the great vessels.

B  slow the heart rate.

C  All of the choices are correct.

D  lubricate membranes of the pericardium.

E  eliminate blood pressure spikes.

A  dark red

B  dark blue

C  bright red

D  light blue

A  tendinous cords.

B  tricuspid valve.

C  trabeculae carneae.

D  pectinate muscles.

E  conus arteriosus.

A  b, a, d, c, f, g, e

B  f, g, d, c, b, a, e

C  d, b, a, c, f, g, e

D  c, d, a, b, f, g, e

E  c, d, a, f, b, g, e

A  collagen with the assistance of von Willebrand factor.

B  prostacyclin with the assistance of activated factor V.

C  prostacyclin with the assistance of thromboxane A2.

D  proconvertin with the assistance of factor IX.

E  collagen with the assistance of prothrombin.

A  globulins.

B  fibrinogens.

C  prothrombins.

D  endocrine hormones.

E  albumins.

A  Pulmonary veins

B  Superior vena cava

C  Pulmonary arteries

D  Pulmonary trunk

E  Inferior vena cava

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

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

A  smallest, no nucleus

B  largest, no nucleus

C  largest, prominent nuclei

D  smallest, prominent nuclei

A  Calcium is entering and potassium is leaving ventricular 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  Sodium is rapidly diffusing out of atrial muscle cells.

A  Pulmonary circuit

B  Coronary circuit

C  Visceral circuit

D  Systemic circuit

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

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

C  action potentials within the cusps of the valves.

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

A  external layer of the fibrous pericardium.

B  visceral layer of the serosal pericardium.

C  parietal layer of the serosal pericardium.

D  myocardium.

E  mediastinum.

A  b, d, e

B  a, c, d

C  a, c, e

D  b, c, e

E  a, b, e

A  e

B  a, d

C  a, b, c, d

D  a, c, d

E  b, d

A  antibodies, lipids

B  clotting factors, hormones

C  iron ions, antibodies

D  lipids, heavy metals

E  oxygen, clotting proteins

A  45

B  55

C  35

D  75

E  25

A  a, c, d, f

B  a, b, c, e, f

C  a, b, c, g

D  c, d, g

E  c, e, g

A  intrinsic

B  extrinsic

C  common

A  depolarized as potassium exits and calcium enters.

B  hyperpolarized as sodium and calcium exit.

C  depolarized as potassium enters and calcium exits.

D  repolarized as sodium enters and calcium exits.

E  hyperpolarized as potassium enters and calcium exits.

A  Ventricular ejection

B  Isovolumetric contraction

C  Isovolumetric relaxation

D  Atrial contraction and ventricular filling

E  Late ventricular diastole

A  positive inotropic agent.

B  negative chronotropic agent.

C  negative inotropic agent.

D  positive chronotropic agent.

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

B  anaerobic metabolism using glycolytic enzymes to quickly generate ATP.

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

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

A  Contraction of the left atrium

B  Relaxation of the left atrium

C  Contraction of the right atrium

D  Relaxation of the right ventricle

E  Contraction of the right ventricle