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 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.
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?