What are the correct functions of the neuronal pathways and circuits
What will be an ideal response?
convergent pathways: pathways that allow different parts of the nervous system to affect the activity of a neuron
divergent pathway: pathways that allow one part of the nervous system to affect more than one part of the nervous system
reverberating circuit: important in functions that are periodically active such as the sleep/wake cycle and respiration
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In the final step of enzymatic catalysis,
A. the substrate is released and the enzyme is inactivated. B. the product is completed and the enzyme is inactivated. C. the products are released and the enzyme is free to bind other substrates. D. the enzyme and substrate form chemical bonds with each other resulting in a new product. E. equilibrium is obtained so that the enzyme does not catalyze further reactions.
Carotene, a pigment that contributes to skin color, is acquired in the body by eating various yellow-orange vegetables.
Answer the following statement true (T) or false (F)
Which of the following is an example of a permissive effect of a hormone?
a. the effect of thyroid hormones on growth. b. the effect of insulin on glucose uptake by cells. c. the effect of sex hormones on the secretion of growth hormone d. a and c e. all of the above
The small intestine uses segmentation to mix chyme with digestive enzymes, increase its contact with the mucosa, and propel it forward through the digestive tract.
Answer the following statement true (T) or false (F)