Lecture Exam 1

A  pushes against the atrioventricular valves and opens them.

B  pushes against the semilunar valves and closes them.

C  pushes against the semilunar valves and opens them.

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

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

A  increase the oxygen carrying capacity of the blood.

B  decrease the blood pressure in the arteries.

C  increase the carbon dioxide carrying capacity of the blood.

D  increase the viscosity of the blood.

E  decrease the oxygen carrying capacity of the blood.

A  guide the inferior vena cava into the right atrium.

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

C  connect the top and bottom halves of the heart.

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 fast voltage-gated calcium channels.

B  fast 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  None of the choices is correct.

B  Aortic semilunar valve

C  Right atrioventricular valve

D  Pulmonary semilunar valve

E  Left atrioventricular valve

A  decrease.

B  increase.

A  action potentials are initiated by the autonomic nervous system.

B  action potentials fire spontaneously.

C  action potentials are stimulated by internal stores of acetylcholine.

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

E  action potentials always occur at exactly the same frequency.

A  heme

B  globin

C  calcium

D  iron

A  altitude.

B  All of the choices are correct.

C  sex.

D  age.

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

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

C  increases, and so blood volume is abnormally high.

D  decreases, and so blood volume is abnormally high.

A  Skeletal muscle cell

B  Cardiac muscle cell

A  a

B  b

C  e

D  d

E  c

A  a, b, d

B  a, d, e

C  a, b, c, e

D  a, b, c

E  a, e, f

A  the donor had type O blood.

B  the wrong blood type was used.

C  the recipient had type AB blood.

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

A  Protection

B  Regulation

C  Prevention

D  Transportation

A  lung.

B  spleen.

C  liver and spleen.

D  spleen and lung.

E  liver.

A  can form a rouleau when moving through a capillary.

B  have lots of inclusion molecules.

C  are actually dead.

D  are not red.

E  lack a nucleus and organelles.

A  directly, directly

B  directly, indirectly

C  indirectly, indirectly

D  indirectly, directly

A  Neutrophils, basophils, eosinophils, and monocytes

B  Neutrophils

C  Lymphocytes

D  Lymphocytes and monocytes

E  Basophils and eosinophils

A  Presence of papillary muscles in the ventricles

B  Presence of skeletal muscle tissue in the heart skeleton

C  Negative pressure inside 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 attractant.

B  platelet repellant.

A  hematopoiesis, 120

B  hemostasis, 120

C  hemostasis, 9

D  hematopoiesis, 9

A  promegakaryocytes.

B  late erythroblasts.

C  myeloid stem cells.

D  platelets.

E  reticulocytes.

A  separate the right and left sides of the heart.

B  permit the passage of blood in one direction.

C  direct the conduction impulse through the heart muscle.

D  are only used in the fetal heart.

E  stabilize and hold the arteries leaving the heart.

A  monocyte.

B  neutrophil.

C  basophil.

D  lymphocyte.

E  eosinophil.

A  FALSE

B  TRUE

A  decrease.

B  not change.

C  increase.

A  calcium moves out through slow voltage-gated channels.

B  calcium comes in through fast voltage-gated channels.

C  potassium comes in through fast voltage-gated channels.

D  potassium moves out through fast voltage-gated channels.

E  sodium moves out through slow voltage-gated channels.

A  hemopoiesis.

B  leukocytosis.

C  erythroblastosis.

D  agglutination.

E  leukopenia.

A  Basophil

B  Monocyte

C  Neutrophil

D  Lymphocyte

E  Eosinophil

A  basic, glucose

B  acidic, glycogen

C  acidic, proteins

D  acidic, glucose

E  basic, proteins

A  c, b, a, d, e, f

B  c, a, b, e, d, f

C  c, a, e, b, d, f

D  a, b, c, e, d, f

E  a, c, d, b, e, f

F  c, a, b, e, d, f

A  Highly variable, depending on the heart beat rate

B  None of the choices is correct.

C  2

D  1

E  4

A  two

B  six

C  three

D  no

E  a highly variable number of

A  by both ventricles in one hour.

B  by a single ventricle in one minute.

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

D  by both ventricles in one minute.

E  by a single ventricle in one hour.

A  slow the heart rate.

B  lubricate membranes of the pericardium.

C  equalize the pressure in the great vessels.

D  All of the choices are correct.

E  eliminate blood pressure spikes.

A  dark red

B  dark blue

C  light blue

D  bright red

A  tendinous cords.

B  trabeculae carneae.

C  pectinate muscles.

D  conus arteriosus.

E  tricuspid valve.

A  d, b, a, c, f, g, e

B  f, g, d, c, b, a, e

C  c, d, a, b, f, g, e

D  c, d, a, f, b, g, e

E  b, a, d, c, f, g, e

A  prostacyclin with the assistance of thromboxane A2.

B  collagen with the assistance of prothrombin.

C  collagen with the assistance of von Willebrand factor.

D  proconvertin with the assistance of factor IX.

E  prostacyclin with the assistance of activated factor V.

A  globulins.

B  fibrinogens.

C  albumins.

D  prothrombins.

E  endocrine hormones.

A  Pulmonary arteries

B  Inferior vena cava

C  Pulmonary trunk

D  Superior vena cava

E  Pulmonary veins

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

B  increasing of the heart rate above 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, prominent nuclei

B  largest, prominent nuclei

C  smallest, no nucleus

D  largest, no nucleus

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

B  Calcium is entering and potassium is leaving ventricular 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  action potentials within the cusps of the valves.

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

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

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

A  mediastinum.

B  visceral layer of the serosal pericardium.

C  external layer of the fibrous pericardium.

D  myocardium.

E  parietal layer of the serosal pericardium.

A  b, d, e

B  b, c, e

C  a, c, e

D  a, b, e

E  a, c, d

A  a, c, d

B  a, d

C  e

D  b, d

E  a, b, c, d

A  oxygen, clotting proteins

B  iron ions, antibodies

C  clotting factors, hormones

D  lipids, heavy metals

E  antibodies, lipids

A  45

B  35

C  55

D  25

E  75

A  a, b, c, e, f

B  c, d, g

C  c, e, g

D  a, b, c, g

E  a, c, d, f

A  extrinsic

B  common

C  intrinsic

A  repolarized as sodium enters and calcium exits.

B  hyperpolarized as potassium enters and calcium exits.

C  hyperpolarized as sodium and calcium exit.

D  depolarized as potassium exits and calcium enters.

E  depolarized as potassium enters and calcium exits.

A  Late ventricular diastole

B  Atrial contraction and ventricular filling

C  Isovolumetric relaxation

D  Isovolumetric contraction

E  Ventricular ejection

A  positive chronotropic agent.

B  negative inotropic agent.

C  positive inotropic agent.

D  negative chronotropic agent.

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

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

C  anaerobic metabolism using glycolytic enzymes to quickly generate ATP.

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

A  Contraction of the left atrium

B  Contraction of the right ventricle

C  Relaxation of the right ventricle

D  Contraction of the right atrium

E  Relaxation of the left atrium