Which descending tract is involved in reflex movements of the head in response to visual and auditory stimuli?
A. Tectospinal
B. Reticulospinal
C. Spinothalamic
D. Corticospinal
E. Vestibulospinal
Answer: A
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What part of the body does the zygomaticus move?
a. head and neck b. upper extremities c. trunk of the body d. lower extremities
Because a neuron loses its centrioles,
A) it loses its normal ability to produce a myelin sheath. B) it is probably located in the PNS. C) it is rendered incapable of dividing. D) it cannot grow as quickly as neurons that retain their centrioles. E) All of the answers are correct.
Hormones may be steroids, peptides, or amines
Indicate whether the statement is true or false
Glucose, galactose, and fructose have the molecular formula C6H12O6 but have different arrangements of atoms. These sugars are:
A) isotopes. B) disaccharides. C) isomers. D) polysaccharides.