Descending tracts of the central nervous system that conduct impulses down the spinal cord are concerned with ____ functions
a. sensory
b. motor
c. afferent
d. interneuron
b
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Antibody functions include all of the following except ________
A) targeting foreign cells so that complement proteins can cause cellular lysis B) cross-linking cell-bound antigens on red blood cells when blood types are properly matched C) linking soluble antigens together so that they fall out of solution D) binding and inactivating chemical toxins released by bacteria or other microorganisms
The ________ system allows for gas exchange with the environment.
A) respiratory B) urinary C) digestive D) lymphatic E) cardiovascular
Which of the following statements is false?
A) A neuron cell membrane is very permeable to K+. B) Na+ is 40 times as concentrated in the ICF as in the ECF. C) The Na+/K+ pump removes 3 Na+ from the cell for every 2 K+ it pumps into the cell. D) The unequal distribution of ions across the cell membrane produces the membrane potential.
Development of the fetus occurs in the
A. vagina. B. ovaries. C. uterine tubes. D. uterus.