Lecture Exam 1

A  pushes against the semilunar valves and closes them.

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

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  pushes against the atrioventricular valves and opens them.

A  increase the carbon dioxide carrying capacity of the blood.

B  increase the oxygen carrying capacity of the blood.

C  decrease the blood pressure in the arteries.

D  decrease the oxygen carrying capacity of the blood.

E  increase the viscosity of the blood.

A  guide the inferior vena cava into the right atrium.

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

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

D  guide the aorta out of the heart.

E  connect the top and bottom halves of the heart.

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

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

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

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

A  Pulmonary semilunar valve

B  None of the choices is correct.

C  Aortic semilunar valve

D  Left atrioventricular valve

E  Right atrioventricular valve

A  decrease.

B  increase.

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

B  action potentials are stimulated by internal stores of acetylcholine.

C  action potentials fire spontaneously.

D  action potentials always occur at exactly the same frequency.

E  action potentials are initiated by the autonomic nervous system.

A  globin

B  calcium

C  heme

D  iron

A  altitude.

B  age.

C  sex.

D  All of the choices are correct.

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

B  increases, and so blood volume is abnormally high.

C  decreases, and so blood volume is abnormally high.

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

A  Skeletal muscle cell

B  Cardiac muscle cell

A  d

B  b

C  a

D  e

E  c

A  a, b, c, e

B  a, d, e

C  a, b, c

D  a, e, f

E  a, b, d

A  the recipient had type AB blood.

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

C  the donor had type O blood.

D  the wrong blood type was used.

A  Prevention

B  Regulation

C  Transportation

D  Protection

A  spleen and lung.

B  liver.

C  liver and spleen.

D  lung.

E  spleen.

A  are actually dead.

B  lack a nucleus and organelles.

C  are not red.

D  can form a rouleau when moving through a capillary.

E  have lots of inclusion molecules.

A  directly, directly

B  indirectly, directly

C  indirectly, indirectly

D  directly, indirectly

A  Lymphocytes and monocytes

B  Lymphocytes

C  Neutrophils

D  Neutrophils, basophils, eosinophils, and monocytes

E  Basophils and eosinophils

A  Arrangement of cardiac muscle in the heart wall

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  Presence of papillary muscles in the ventricles

A  TRUE

B  FALSE

A  platelet attractant.

B  platelet repellant.

A  hematopoiesis, 9

B  hemostasis, 120

C  hemostasis, 9

D  hematopoiesis, 120

A  promegakaryocytes.

B  platelets.

C  late erythroblasts.

D  myeloid stem cells.

E  reticulocytes.

A  stabilize and hold the arteries leaving the heart.

B  permit the passage of blood in one direction.

C  direct the conduction impulse through the heart muscle.

D  separate the right and left sides of the heart.

E  are only used in the fetal heart.

A  basophil.

B  monocyte.

C  neutrophil.

D  eosinophil.

E  lymphocyte.

A  TRUE

B  FALSE

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  sodium moves out through slow voltage-gated channels.

D  potassium comes in through fast voltage-gated channels.

E  potassium moves out through fast voltage-gated channels.

A  leukopenia.

B  hemopoiesis.

C  leukocytosis.

D  agglutination.

E  erythroblastosis.

A  Eosinophil

B  Neutrophil

C  Basophil

D  Lymphocyte

E  Monocyte

A  basic, glucose

B  acidic, glucose

C  acidic, glycogen

D  acidic, proteins

E  basic, proteins

A  a, b, c, e, d, f

B  c, a, e, b, d, f

C  a, c, d, b, e, f

D  c, b, a, d, e, f

E  c, a, b, e, d, f

F  c, a, b, e, d, f

A  4

B  Highly variable, depending on the heart beat rate

C  None of the choices is correct.

D  1

E  2

A  a highly variable number of

B  two

C  six

D  three

E  no

A  by a single ventricle in one hour.

B  by a single ventricle in one minute.

C  by both ventricles in one minute.

D  by both ventricles in one hour.

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  eliminate blood pressure spikes.

D  lubricate membranes of the pericardium.

E  All of the choices are correct.

A  dark red

B  dark blue

C  light blue

D  bright red

A  trabeculae carneae.

B  tricuspid valve.

C  tendinous cords.

D  conus arteriosus.

E  pectinate muscles.

A  c, d, a, f, b, g, e

B  f, g, d, c, b, a, e

C  c, d, a, b, f, g, e

D  d, b, a, c, f, g, e

E  b, a, d, c, f, g, e

A  prostacyclin with the assistance of activated factor V.

B  collagen with the assistance of prothrombin.

C  collagen with the assistance of von Willebrand factor.

D  prostacyclin with the assistance of thromboxane A2.

E  proconvertin with the assistance of factor IX.

A  globulins.

B  endocrine hormones.

C  albumins.

D  fibrinogens.

E  prothrombins.

A  Pulmonary arteries

B  Pulmonary trunk

C  Pulmonary veins

D  Inferior vena cava

E  Superior 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  largest, prominent nuclei

B  smallest, no nucleus

C  smallest, prominent nuclei

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  Sodium is rapidly diffusing out of atrial muscle cells.

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

D  Calcium is entering and potassium is leaving ventricular cells.

A  Coronary circuit

B  Systemic circuit

C  Visceral circuit

D  Pulmonary 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  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  b, c, e

C  a, c, e

D  a, b, e

E  a, c, d

A  a, d

B  b, d

C  a, b, c, d

D  a, c, d

E  e

A  clotting factors, hormones

B  iron ions, antibodies

C  antibodies, lipids

D  oxygen, clotting proteins

E  lipids, heavy metals

A  45

B  55

C  25

D  75

E  35

A  a, b, c, e, f

B  a, b, c, g

C  c, d, g

D  c, e, g

E  a, c, d, f

A  intrinsic

B  common

C  extrinsic

A  depolarized as potassium enters and calcium exits.

B  hyperpolarized as sodium and calcium exit.

C  hyperpolarized as potassium enters and calcium exits.

D  repolarized as sodium enters and calcium exits.

E  depolarized as potassium exits and calcium enters.

A  Atrial contraction and ventricular filling

B  Isovolumetric contraction

C  Late ventricular diastole

D  Isovolumetric relaxation

E  Ventricular ejection

A  negative chronotropic agent.

B  positive inotropic agent.

C  positive chronotropic agent.

D  negative inotropic agent.

A  anaerobic metabolism using glycolytic enzymes to quickly generate ATP.

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

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

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

A  Contraction of the left atrium

B  Relaxation of the left atrium

C  Contraction of the right ventricle

D  Relaxation of the right ventricle

E  Contraction of the right atrium