Unformatted text preview: resting muscle length. b. Most of ventricular filling occurs without the assistance of atrial contraction. c. An increase in peripheral resistance, cardiac output, or both will raise mean arterial pressure. d. The ejection fraction should increase with an increase in contractility. e. Holding end-diastolic volume constant, providing β-adrenergic stimulation will increase end-systolic volume relative to unstimulated muscle....
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- Spring '07
- Bundle of His, receptors increases contractility, equal blood volumes., white cell volume