Match the vessel with the appropriate description.A. Supplies blood to the pelvic areaB. Formed by the bifurcation of the abdominal aortaC. The continuation of the femoral arteryD. Extends from the common iliac artery to the thighE. Continuation of the external iliac artery into the thighExternal iliac artery
Fill in the blank(s) with the appropriate word(s).
Answer: D
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In an ECG pattern, the PQ interval indicates how long it takes for the cardiac impulse to
travel from the A) SA node through the AV node. B) SA node to the atrial muscle fibers. C) SA node to the Purkinje fibers. D) AV node to the atrial muscle fibers.
The stretch reflex differs from the withdrawal reflex in that
a. activation of the afferent results only in excitatory reflex responses in the former case, but in both excitatory and inhibitory responses in the latter case. b. the former is monosynaptic and the latter is polysynaptic. c. the motor neurons associated with the former directly stimulate muscle stretching while those associated with the latter cause muscle contraction. d. two of these. e. all of these.
In convergent pathways,
A) the response of the postsynaptic neuron depends on the summation of EPSPs and IPSPs. B) a smaller number of presynaptic neurons synapse with a larger number of postsynaptic neurons. C) information transmitted in one neuronal pathway can go into two or more pathways. D) all of the above.
The mechanism for concentration of urine is called the _____________ mechanism
A. countercurrent B. filtration C. secretion D. reabsorption E. concentration