Cardiac contraction induces blood flow in the arterial system, but it has no influence on blood flow in the veins
Indicate whether the statement is true or false
F
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Where in the hearts conduction system do the action potentials pause momentarily?
a. action potentials pass slowly through the atrioventricular node. b. action potentials pass slowly through the atrioventricular bundle. c. action potentials pass slowly through the Purkinje fibers. d. action potentials pass slowly through the bundle branches.
B cells are responsible for
A. cell-mediated immunity. B. antibody-mediated immunity. C. inflammation. D. nonspecific immunity.
Which of the following is not a feature of the sympathetic division of the ANS?
A) It has long preganglionic fibers. B) Its ganglia are adjacent to the spinal column. C) It originates in the thoracolumbar region of the spinal cord. D) It has an extensive neural divergence and a relative widespread effect. E) It has long postganglionic fibers.
Answer the following statements true (T) or false (F)
1. During metaphase, chromosomes align in the center of the cell. 2. A cell in interphase is not in active cell division. 3. During prophase, chromatin becomes chromosomes. 4. During anaphase, the chromosomes move away from the center of the cell. 5. During telophase, spindle fibers attach to each chromatid.