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Physiology week 7-13
|Which of the following is not one of the main chemical classes of neurotransmitters?
|Within the nervous system, coding for the strength of a stimulus is accomplished through:
|the frequency of nerve impulses
|Dopamine, epinephrine, and norepinephrine are classified as:
|The cerebellum performs all of the following functions except:
|controls cardiac function
|The vomiting reflex is mediated by the:
|Sympathetic responses generally have widespread effects on the body because:
|preganglionic fibers synapse with several postsynaptic fibers
|The spinal tract that is located in the side of the cord, originates in the brain, and terminates in the spinal cord is the _____ tract.
|The receptors responsible for sensing crude and persistent touch are the:
|The last step in the nonsteroid hormone mechanism of action is
|protein kinases activate other enzymes
|When you are looking at a large green field, which cones would be sending the green wavelength to the brain?
|The term used to describe the collection of mechanisms that influence the circulation of blood is
|Inhibition of sympathetic vasoconstrictor impulses is considered a major mechanism of
|The mechanisms of which three hormones work together to regulate blood volume?
|aldosterone, ANH, and ADH
|The heart begins beating in the fetus at about what stage of development?
|after about 4 weeks
|The primary organ of the lymphatic system is the
|Adaptive immunity, part of the body’s third line of defense, is orchestrated by two different classes of a type of white blood cell called the
|Which organ has several functions, including defense, hematopoiesis, red blood cell and platelet destruction, and blood reservoir?
|Which of the following would have the greatest accelerating effect on the dissociation of oxygen from hemoglobin?
|Decreased PO2 and increased PCO2
|Which of the following is not one of the openings that must be blocked when food moves from the pharynx into the esophagus?
|The process of swallowing is known as:
|The purpose of peristalsis is to:
|propel food forward along the GI tract.
|Hydrolysis refers to:
|using water to split larger compounds into smaller ones.