Q1Even a small quantity of hormone can have a strong effect onits target cell because of ______.
a. negative feedback inhibition.
b. an antagonistic effect.
c. up-regulation
d. enzyme
e. down-regulation
f. none of these
Q2) Which of the following statements is FALSE?
a. The Golgi tendon reflex is the inhibition of a musclecontraction that occurs when its tendon is excessivelystretched.
b. A ganglion is a swelling along a nerve containing cell bodies ofperipheral neurons.
c. Neurons move material away from the soma by anterogradetransport.
d. Astrocytes serve the same purpose in the CNS that Schwann cellsdo in the PNS.
e. None of the these.
Q3) Which of the following statements is FALSE?
a. Taste signals travel from the tongue through the facial andhypoglossal nerves.
b. The middle ear consists of an air-filled chamber.
c. Rods secrete glutamate from the base of the cell when NOTexposed to light.
d. Peptide hormones are synthesized by the rough endoplasmicreticulum.
e. None of the these.'
Q4) Which of the following statements is FALSE?
a. Fibers of the vagus nerve end very near their targetorgans.
b. The autonomic effect on a target cell depends on the receptor onthat target cell.
c. Most sympathetic preganglionic fibers synapse withpostganglionic fibers in the chain ganglia.
d. The autonomic nervous system carries out many somatic reflexesthat are crucial to homeostasis.
e. None of the these
Q5) Which statement about diabetes mellitus (DM) is NOTcorrect?
a. type II DM is more common than type I DM.
b. target cells are unresponsive to insulin in type II DM.
c. the body produces autoantibodies that destroy the pancreaticbeta cells in type I DM.
d. diabetic neuropathy is a common long-term effect of DM.
e. None of the these.
Q6) Which statement is false
  a. Axons arising in the cerebellum cannot exciteskeletal muscle contraction.
b. If a muscle is repeatedly stimulated and allowed to relaxbetween stimuli, the successive contractions will be stronger. Thisphenomenon, known as treppe, or staircase effect, is thought to bedue to the accumulation of calcium ions in the sarcoplasm.
c. Large motor units having a large innervation ratio allow forless control than small motor units.
d. A muscle contracts more strongly when lifting a 20-pound weightthan when lifting a 5-pound weight. This is because individualfibers contract harder.
e. None of the these.
