Sensory information from the body, as well as motor control signals from the brain, travel through the spinal cord, shown in cross section in the diagram below. Which portion of the spinal cord carries most of these motor control signals from the brain to the body?
a. white matter
b. dorsal spinal cord
c. ventral spinal cord
d. gray matter
c. ventral spinal cord
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Which of the following is true of chemical synapses? Select all correct choices
A. They are more common than electrical synapses. B. Their vesicles fuse with the presynaptic membrane to release neurotransmitters. C. Once released, their neurotransmitter molecules may return to the presynaptic cell.
The brain center for homeostatic control of the internal environment is the ________
a. hypothalamus b. cerebellum c. pons d. thalamus
Polygenes are involved in determining continuously varying or multiple-factor traits
Indicate whether the statement is true or false
When conducting syndromic surveillance, patients who present with signs and symptoms of __________ are especially significant.
A) hepatitis B) influenza C) renal failure D) food poisoning