| A | B |
|---|
| The AV valves (tricuspid and bicuspid) are closed by | ventricular contraction |
| Cardiac muscle responds to increased stretch by | increasing contraction strength |
| The fastest pacemaker of the heart is the | SA node |
| The end systolic volume is at the | T wave |
| An increase in after load acts to | increase end systolic volume |
| Ventricular depolarization occurs during the ____ of an EKG. | QRS complex |
| Most of the blood entering the heart does so during which interval? | T-P interval |
| The vocal folds (cords) are used during: | speech, swallowing, heavy lifting |
| Contractility of the heart is influenced by | sympathetic nerves |
| Decreased venous return could be the result of | decreased respiration rate |
| Starling's law of the heart states | an increase in stretch of cardiac muscle increases contraction strength |
| Active hyperemia starts with | increased metabollic activity in an organ |
| Myogenic responses are a part of | flow autograph |
| Under normal physiological conditions | blood pressure forces fluid both through and out of capillaries |
| Cushing's disease can be produced by a pituitary tumor that causes excess plasma cortisol. | secondary hypersecretion |
| Thrombomodulin acts to activate | protein C |
| A defective gene for which of the following proteins would have the greatest effect on hemostasis? | prothrombin |
| What is occurring when high levels of the hormone produce results very different from low levels. | pharmacological effects |
| This hormone is involved in problems such as jet lag and season affective disorder (winter depression) | melatonin |
| The intrinsic pathway starts with the activation of | factor 12 |
| Exposure of blood to collagen acts to | initiate platelet activation and initiate the intrinsic clotting pathway |
| The link between chest wall movement and lung movement is provided by | appropriate transpulmonary pressures |
| Contraction of the diaphragm produces | an inspiration of tidal volume |
| Contraction of abdominal muscles produces | a forced expiration |
| The maximum amount of air that can be exhaled in a single breath is the | vital capacity |
| The enzyme responsible for the production of thromboxane and prostaglandin from arachidonic acid | cyclooxygenase |
| Which of the following is not produced by healthy endothelial cells? | thrombin |
| Which of the following is not produced by the liver? | NO (nitric oxide) |
| Lung compliance is influenced by | presence of surfactant, elasticity of the lungs, some diseases |
| Which of the following is not involved in anticlotting? | thromboxane |
