Stimulation of beta receptors of the sympathetic nervous system results in:
A. bronchoconstriction.
B. decreased heart rate.
C. peripheral vasoconstriction.
D. increased myocardial contractility.
Ans: D. increased myocardial contractility.
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A runner collapses during a race and is examined by a doctor. They have lost the ability to plantar flex at the ankle. Which of the following is probably the injured muscle?
A. Tibialis anterior B. Gastrocnemius C. Biceps femoris D. Semimembranosus
Projection tracts
A. extend between the right and left cerebral hemispheres. B. link the cerebral cortex to the caudal brain regions and the spinal cord. C. connect different regions within a lobe. D. connect different regions of the cerebral cortex within the same hemisphere. E. connect a region of one lobe with another lobe in the same hemisphere.
An increase in cardiac sympathetic activity ____________________ the stroke volume
Fill in the blank(s) with correct word
A hepatic triad contains branches of all of the following vessels except
A. a bile ductule. B. the hepatic vein. C. the hepatic portal vein. D. the hepatic artery. E. a hepatic triad contains branches of all of these vessels.