Parkinson disease is a progressive loss of motor function due to the degeneration of specific neurons. These neurons secrete an inhibitory neurotransmitter that prevents excessive activity in motor centers of the brain
What neurotransmitter is this?
A) Acetylcholine
B) Dopamine
C) GABA
D) Serotonin
E) Glutamate
B
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The pancreas secretes enzymes that enter the small intestine and chemically digest chyme. Choose the enzyme(s) that break(s) down fats.
A) carboxypeptidase B) pancreatic lipase C) trypsinogen D) pancreatic amylase
Once the immune response has been activated, it can be "turned off" by ________ T-lymphocytes.
Fill in the blank(s) with the appropriate word(s).
In a somatic motor pathway, the neuron that has a cell body in a CNS processing center is (the)
A) upper motor neuron. B) lower motor neuron. C) postganglionic neuron. D) preganglionic neuron. E) None of the answers are correct.
Why is the skin considered an excretory organ?
A. Sweat contains water, salt, and urea. B. Sweat cools the body. C. Oil glands secrete sebum. D. All apply.