Immediately prior to atrial contraction, blood continues to enter the atria from the venae cavae and pulmonary veins
Indicate whether this statement is true or false.
TRUE
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When an impulse arrives at the knob of the motor neuron, calcium
A. enters through active transport pumps and triggers the release of transmitter. B. enters through voltage-gated channels and triggers the release of transmitter. C. is released from synaptic vesicles. D. exits through voltage-gated channels and triggers transmitter release. E. exits through active transport pumps and brings transmitter with it.
The countercurrent multiplier recaptures ________ and is based on fluid flowing in the ________ direction in two adjacent tubules
A) potassium; same B) sodium; opposite C) sodium; same D) calcium; opposite E) calcium; same
The white muscles of fish are organized into units of parallel layers derived from internal segments of the embryo called __________
Fill in the blank with the correct word.
A person with Addison disease ___________.
A) is unable to replenish blood glucose levels under stressful conditions B) develops dramatically more male features C) develops a rounded face and edema D) has overgrowth of hands and face E) all of the above