The inherited brain disorder Huntington's disease is caused by the destruction of basal nuclei that use different neurotransmitters. One neurotransmitter is ________ and the other is ________
A) acetylcholine; serotonin
B) serotonin; norepinephrine
C) norepinephrine; serotonin
D) acetylcholine; GABA
E) glutamate; serotonin
D
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The gastrointestinal tract lining changes along its length. Choose one section of the tract that has a simple epithelium and one section that has a stratified epithelium,
and for each section describe the specific epithelium present and how that type of epithelium suits the organ's function. What will be an ideal response?
The condition known as shock is characterized by a decreased return of venous blood to the heart. How could an upsetting situation such as the sight of a tragic accident or very bad news produce shock?
What will be an ideal response?
The spinous process has a bifid tip in most ________ vertebrae.
A. thoracic B. sacral C. coccygeal D. lumbar E. cervical
An insufficient mitral valve (bicuspid valve, or left atrioventricular valve) would allow the backflow of blood into the:
A) left atrium. B) left ventricle. C) aorta. D) right atrium.