Which of the following does NOT contribute to increased stroke volume during exercise?
A. increased contractility of cardiac muscle
B. increased venous return
C. increased length of filling time during diastole
D. increased sympathetic stimulation of ventricular muscle
E. increased end-diastolic volume
C
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The different wavelengths of light stimuli are interpreted by our visual systems as different ___.
A. opsins B. transduction C. perception D. colors (shades of gray)
Myogenic autoregulation means that
A) stretched smooth muscle in a blood vessel constricts reflexively. B) increased blood pressure in a vessel triggers relaxation in that vessel and blood vessel diameter is adjusted by centers in the brain through monitoring blood pressure in areas throughout the body. C) blood vessel diameter is adjusted by centers in the brain through monitoring blood pressure in areas throughout the body. D) stretched smooth muscle in a blood vessel constricts reflexively and blood vessel diameter is adjusted by centers in the brain through monitoring blood pressure in areas throughout the body. E) increased blood pressure in a vessel triggers relaxation in that vessel.
Which vessel supplies blood to the brain?
A) Radial artery B) Coronary artery C) Internal carotid artery D) Subclavian artery