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SCI221

Week 7-13

QuestionAnswer
The active transport mechanism in the plasma membrane that transports sodium and potassium ions in opposite directions and at different rates is the sodium-potassium pump.
Which neuron could transmit a nerve impulse the fastest? A large-diameter neuron with myelin
The vomiting reflex is mediated by the: medulla.
Nerve impulses over the _____ nerve cause increased peristalsis and decreased heart rate. vagus
When you are looking at a large green field, which cones would be sending the green wavelength to the brain? M
Sensory impulses ending in what part of the CNS trigger imprecise or “crude” sensation awareness? Thalamus
The mechanisms of which three hormones work together to regulate blood volume? aldosterone, ANH, and ADH
A decrease in the amount of white blood cells is called leukopenia.
The body’s defense mechanisms can be organized into one of two major categories of immune mechanisms; these are innate and adaptive immunity.
Which organ has several functions, including defense, hematopoiesis, red blood cell and platelet destruction, and blood reservoir? spleen
One hundred milliliters of arterial blood contains approximately what volume percent of oxygen? 20%
If the tidal volume of a given individual is 500 ml, then the anatomical dead space is approximately _____ ml. 150
The substances absorbed into the lymph capillaries are: glycerol and fatty acids.
When classified according to the kind of chemical reactions catalyzed, digestive enzymes are referred to as _____ enzymes. hydrolyzing
Created by: user-1973629
 



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