Entries by Hannah Wangui

1.Which type of afferent neuron primarily senses carbon dioxide levels (via protons)? A Proprioceptors B Central chemoreceptors C Baroreceptors D Peripheral chemoreceptors 2.Which of the following motor responses are considered parasympathetic? Choose all that apply. Increase heart rate Decrease heart rate Increase respiration Decrease respiration Increase cardiac output Decrease cardiac output Vasodilation Vasoconstriction 3.Motor neurons associated with the respiratory control center are classified as visceral motor. True False 4.During hyperventilation, the blood becomes basic. Which of the following is one mechanism to help restore homeostasis? A Increase the action of cardioacceleratory neurons B Release norepinephrine at the SA node C Stimulate the adrenal gland D Reduce the action potential rate of inspiratory motor neurons 5.An increase in action potentials to the diaphragm will result in an increase in respiratory rate (breaths/minute). True False? A Proprioceptors B Central chemoreceptors C Baroreceptors D Peripheral chemoreceptors 2.Which of the following motor responses are considered parasympathetic? Choose all that apply. Increase heart rate Decrease heart rate Increase respiration Decrease respiration Increase cardiac output Decrease cardiac output Vasodilation Vasoconstriction 3.Motor neurons associated with the respiratory control center are classified as visceral motor. True False 4.During hyperventilation, the blood becomes basic. Which of the following is one mechanism to help restore homeostasis? A Increase the action of cardioacceleratory neurons B Release norepinephrine at the SA node C Stimulate the adrenal gland D Reduce the action potential rate of inspiratory motor neurons 5.An increase in action potentials to the diaphragm will result in an increase in respiratory rate (breaths/minute). True False

August 19, 2019 in /by

1.Which type of afferent neuron primarily senses carbon dioxide levels (via protons)?A Proprioceptors B Central chemoreceptors C Baroreceptors D Peripheral chemoreceptors 2.Which of the following motor responses are considered parasympathetic? Choose all that apply. Increase heart rate Decrease heart rate Increase respiration Decrease respiration Increase cardiac output Decrease cardiac output Vasodilation Vasoconstriction 3.Motor neurons associated with […]

 

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A sympathetic B parasympathetic 2. What is the stimulus that causes depolarization of baroreceptors (i.e., specialized neurons that monitor pressure in major arteries)? A Binding of chemicals to ligand-gated channels in the baroreceptor membrane. B Binding of chemicals to mechanical-gated channels in the baroreceptor membrane. C Stretch of arterial walls opening ligand-gated channels in the baroreceptor membrane. D Stretch of arterial walls opening mechanical-gated channels in the baroreceptor membrane. 3. Which of the following events are considered visceral motor actions? Choose all that apply. A Increase of action potentials from baroreceptors to brain cardiovascular control centers B. Release of acetylcholine from cardioinhibitory neurons C. Neurons stimulating the release of epinephrine and norepinephrine from the adrenal gland D. Communication between neurons WITHIN the cardiovascular control centers of the medulla (hindbrain) 4. An increase in cardiac output will help to raise blood pressure. A. True B. False 5. Looking at the big picture in Worksheet 8, the visceral motor events completed (either sympathetic or parasympathetic) to help return the blood pressure to a homeostatic setpoint are part of ________________ feedback loops. A. negative B. positive A Binding of chemicals to ligand-gated channels in the baroreceptor membrane. B Binding of chemicals to mechanical-gated channels in the baroreceptor membrane. C Stretch of arterial walls opening ligand-gated channels in the baroreceptor membrane. D Stretch of arterial walls opening mechanical-gated channels in the baroreceptor membrane. 3. Which of the following events are considered visceral motor actions? Choose all that apply. A Increase of action potentials from baroreceptors to brain cardiovascular control centers B. Release of acetylcholine from cardioinhibitory neurons C. Neurons stimulating the release of epinephrine and norepinephrine from the adrenal gland D. Communication between neurons WITHIN the cardiovascular control centers of the medulla (hindbrain) 4. An increase in cardiac output will help to raise blood pressure. A. True B. False 5. Looking at the big picture in Worksheet 8, the visceral motor events completed (either sympathetic or parasympathetic) to help return the blood pressure to a homeostatic setpoint are part of ________________ feedback loops. A. negative B. positive

August 19, 2019 in /by

A sympatheticB parasympathetic 2.What is the stimulus that causes depolarization of baroreceptors (i.e., specialized neurons that monitor pressure in major arteries)? A Binding of chemicals to ligand-gated channels in the baroreceptor membrane. B Binding of chemicals to mechanical-gated channels in the baroreceptor membrane. C Stretch of arterial walls opening ligand-gated channels in the baroreceptor membrane. D […]

 

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1.The structure where the nasal cavity and oral cavity connect at the back of the throat is called the ___________. Answer must be spelled correctly. 2.It is normal for food to pass down the trachea. T or F 3.The tiny air sacs at the end of the bronchioles are called ____________. Answer must be spelled correctly 4.Pulmonary arteries carry ______________ blood (deoxygenated or oxygenated) 5.An increase in the volume of our lungs causes inhalation. T or F. 2.It is normal for food to pass down the trachea. T or F 3.The tiny air sacs at the end of the bronchioles are called ____________. Answer must be spelled correctly 4.Pulmonary arteries carry ______________ blood (deoxygenated or oxygenated) 5.An increase in the volume of our lungs causes inhalation. T or F

August 19, 2019 in /by

1.The structure where the nasal cavity and oral cavity connect at the back of the throat is called the ___________. Answer must be spelled correctly. 2.It is normal for food to pass down the trachea. T or F 3.The tiny air sacs at the end of the bronchioles are called ____________.  Answer must be spelled correctly 4.Pulmonary […]

 

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.What is the main function of the semilunar (aortic and pulmonary) valves? To prevent the flow of blood from atria to ventricles during atrial systole To prevent the flow of blood from veins to atria during the quiescent period To prevent the flow of blood from ventricles to atria during ventricular ejection To prevent the flow of blood from arteries back into the ventricles during isovolumetric relaxation 2. During atrial systole, which of the following pressure gradients exist? Higher pressure in atria compared to ventricles Higher pressure in ventricles compared to atria Higher pressure in ventricles compared to arteries Same pressure in atria and ventricles 3. In the heart, blood will flow from areas of high pressure to areas of low pressure (assuming no valves are present). True False 4. Which stage of the cardiac cycle helps to fill ventricles to maximum blood volume? Quiescent period Atrial systole Ventricular ejection Isovolumetric relaxation 5. During the quiescent period, blood is ONLY passively filling the atria (i.e., there is not blood in the ventricles). True False To prevent the flow of blood from atria to ventricles during atrial systole To prevent the flow of blood from veins to atria during the quiescent period To prevent the flow of blood from ventricles to atria during ventricular ejection To prevent the flow of blood from arteries back into the ventricles during isovolumetric relaxation 2. During atrial systole, which of the following pressure gradients exist? Higher pressure in atria compared to ventricles Higher pressure in ventricles compared to atria Higher pressure in ventricles compared to arteries Same pressure in atria and ventricles 3. In the heart, blood will flow from areas of high pressure to areas of low pressure (assuming no valves are present). True False 4. Which stage of the cardiac cycle helps to fill ventricles to maximum blood volume? Quiescent period Atrial systole Ventricular ejection Isovolumetric relaxation 5. During the quiescent period, blood is ONLY passively filling the atria (i.e., there is not blood in the ventricles). True False

August 19, 2019 in /by

.What is the main function of the semilunar (aortic and pulmonary) valves?To prevent the flow of blood from atria to ventricles during atrial systole To prevent the flow of blood from veins to atria during the quiescent period To prevent the flow of blood from ventricles to atria during ventricular ejection To prevent the flow […]

 

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