Biology (Raven), 10th Edition

Chapter 49: The Circulatory System

Pre-Test

1
Plasma is 92% water plus which of the following?
A)nutrients.
B)hormones.
C)ions.
D)plasma proteins.
E)all of these
2
The circulatory fluid in organisms with an open circulatory system is called:
A)Blood.
B)Plasma.
C)Hemolymph.
D)Formed elements.
E)Coelomic fluid.
3
Select the correct statement concerning the hearts of birds and mammals.
A)are strikingly similar due to convergent evolution
B)is four chambered due to common ancestry
C)is divergent due to adaptive radiation
D)is similar in function but very different structure
E)is similar in structure but very different in function
4
Contraction of the heart muscle is initiated by
A)the AV node.
B)the sympathetic nervous system.
C)the parasympathetic nervous system.
D)somatic nervous system.
E)autorhythmic cells.
5
The lymphatic system handles fluids that arise from where?
A)the cardiovascular system
B)the excretory system
C)the spleen
D)the heart
E)the brain
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