The ________ is the pacemaker that initiates each heart beat
A) sinoatrial (SA) node
B) atrioventricular (AV) node
C) sympathetic division of the nervous system
D) cardiac conduction system
E) autonomic nervous system
A
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In what vessel is blood pressure the highest?
A) artery B) arteriole C) capillary D) venule E) vein
Most of the terminology to name and describe body parts and their functions comes from
A) picture drawings on the cave walls of our ancestors. B) the language of hunter-gatherers. C) Latin and Greek. D) English and Italian.
A cross of two second-generation, straight-shorthaired individuals would yield what phenotype?
What will be an ideal response
What would be the effect of a genetic defect in a clotting factor that normally is part of the conversion of fibrinogen into fibrin?
A. Platelet-derived growth factor would be lacking, and smooth muscle in the walls of broken blood vessels would not be repaired. B. A clot that seals the break in a blood vessel would not form. C. Plasmin would not be produced, and the clot would remain on the wall of the blood vessel without dissolving. D. Platelets would not adhere to one another to form the platelet plug. E. Platelets would not be able to release serotonin.