The sight of food can trigger a series of events that results in the release of gastric juice. All but one of the following is true in regards to the previous statement. Select the one answer that is not true
A) This prepares the stomach for food before its arrival in the stomach.
B) This is an example of a long reflexive pathway.
C) The motor nerves of this pathway are part of the sympathetic division of the autonomic nervous system.
D) The cerebral cortex, hypothalamus and medulla oblongata are all involved in processing the stimulatory information.
C
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The electrochemical gradient refers to
A. the difference in concentration of a substance between two areas. B. the difference in electrical charge between two areas. C. the combination of electrical and chemical gradients between two areas. D. the resistance a membrane has to allowing any charged chemical to pass through it.
Shafts of hair are comprised of
A) living keratinized dermal cells. B) dead keratinized dermal cells. C) keratinized adipose cells. D) living keratinized epidermal cells. E) dead keratinized epidermal cells.
Which of the following evolutionary adaptations would result in an increase in the speed of conduction of action potentials by decreasing the longitudinal resistance of the axon?
a. increasing the number of channels in the plasma membrane b. myelinating the axon c. increasing the diameter of the axon d. placing all voltage-gated ion channels at distant intervals e. None of these.
_________________ is the transmission of genetic characteristics from parent to offspring.
Fill in the blank(s) with the appropriate word(s).