Autonomic Nervous System Trivia Quiz: How Much You Know?

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  • 1/37 Questions

    The sympathetic (division) nervous system is often considered the _____ or _____system.

    • Fight or flight
    • Run or hide
    • Feed or breed
    • Rest or digest
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About This Quiz

How much do you know about the autonomic nervous system? This system regulates many functions involving the internal organs and also controls some of the muscles within the body after receiving information from the body and external environment. Do take up this quiz and get to see just how much more you can learn about it. All the best!

Autonomic Nervous System Trivia Quiz: How Much You Know? - Quiz

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  • 2. 
    The autonomic nervous system is unique in that it requires a sequential two-neuron efferent pathway - ProProfs

    The autonomic nervous system is unique in that it requires a sequential two-neuron efferent pathway

    • True

    • False

    Correct Answer
    A. True
    Explanation
    preganglionic and postganglionic neurons

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  • 3. 

    Preganglionic neurons that pass through chain ganglia without synapsing continue on through splanchnic nerves.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Preganglionic neurons that pass through chain ganglia without synapsing means that they do not form connections or synapses with other neurons in the ganglia. Instead, they continue their pathway through splanchnic nerves. This suggests that the statement is true, as it indicates that these neurons bypass the ganglia and proceed through the splanchnic nerves without interruption.

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  • 4. 

    What division of the autonomic nervous system maintains homeostasis during resting conditions?

    • Sympathetic

    • Parasympathetic

    • Thoracolumbar

    • Somatomotor

    • Paravertebral

    Correct Answer
    A. Parasympathetic
    Explanation
    The parasympathetic division of the autonomic nervous system is responsible for maintaining homeostasis during resting conditions. This division promotes activities that conserve and restore energy, such as slowing down the heart rate, decreasing blood pressure, and increasing digestion. It is often referred to as the "rest and digest" system, as it counteracts the effects of the sympathetic division, which is responsible for the "fight or flight" response.

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  • 5. 

    Please select two of the efferent divisions of the Autonomic Nervous System from the list of answers below.

    • Sympathetic

    • Parasympathetic

    • Spinal cord reflex

    • Superficial

    Correct Answer(s)
    A. Sympathetic
    A. Parasympathetic
    Explanation
    The autonomic nervous system is responsible for regulating involuntary bodily functions. It is divided into two main divisions: the sympathetic and parasympathetic divisions. The sympathetic division is responsible for the body's "fight or flight" response, increasing heart rate, dilating blood vessels, and releasing stress hormones. The parasympathetic division, on the other hand, promotes relaxation and conserves energy, slowing down heart rate, constricting blood vessels, and enhancing digestion. These two divisions work in balance to maintain homeostasis in the body.

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  • 6. 

    The _____ _____, or first, the neuron will begin at the “outflow” and will synapse at the postganglionic, or second, neuron’s cell body. The postganglionic neuron will then synapse at the target organ.

    • Preganglionic neuron

    • Postganglionic neuron

    • Motor neuron

    • Sensory neuron

    Correct Answer
    A. Preganglionic neuron
    Explanation
    The given correct answer is "preganglionic neuron". In the autonomic nervous system, the preganglionic neuron is the first neuron in a two-neuron chain. It originates in the central nervous system and synapses with the postganglionic neuron in an autonomic ganglion. The postganglionic neuron then extends to the target organ to transmit the signal. This two-neuron pathway allows for the coordination and control of autonomic functions in the body.

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  • 7. 
    Given the blood vessels of external genitals which is an autonomic effector. What is the parasympathetic stimulation reaction? - ProProfs

    Given the blood vessels of external genitals which is an autonomic effector. What is the parasympathetic stimulation reaction?

    • Dilation of blood vessels causing erection

    • Dilation (beta receptors)

    • Constriction (alpha receptors)

    • Increased epinephrine secretion

    • No Effect

    Correct Answer
    A. Dilation of blood vessels causing erection
    Explanation
    Parasympathetic stimulation causes dilation of blood vessels in the external genitals, leading to an erection. This is because the parasympathetic nervous system is responsible for promoting relaxation and increasing blood flow to the genital area, which allows for the engorgement of blood vessels and the subsequent erection.

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  • 8. 

    Where do sympathetic preganglionic neurons begin?

    • Spinal cord

    • Anterior gray horn

    • Medulla division

    • Craniosacral division

    Correct Answer
    A. Spinal cord
    Explanation
    Sympathetic preganglionic neurons begin in the spinal cord. The spinal cord is responsible for transmitting signals between the brain and the rest of the body. In the case of sympathetic preganglionic neurons, they originate in the spinal cord and then travel to the sympathetic ganglia, where they synapse with postganglionic neurons. From there, the postganglionic neurons extend to various target organs, such as the heart, lungs, and blood vessels, to regulate sympathetic responses. Therefore, the correct answer is the spinal cord.

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  • 9. 
    _____ binds to cholinergic receptors. These two main types of cholinergic receptors are (1) Nicotinic (N) receptors and (2) Muscarinic (M) receptors. - ProProfs

    _____ binds to cholinergic receptors. These two main types of cholinergic receptors are (1) Nicotinic (N) receptors and (2) Muscarinic (M) receptors.

    Correct Answer
    Acetylcholine
    Explanation
    Acetylcholine is the neurotransmitter that binds to cholinergic receptors. There are two main types of cholinergic receptors: nicotinic (N) receptors and muscarinic (M) receptors. Acetylcholine binds to these receptors to transmit signals in the nervous system.

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  • 10. 
    What is the more modern characterization is that the sympathetic nervous system called? - ProProfs

    What is the more modern characterization is that the sympathetic nervous system called?

    • Quick response mobilizing system

    • More slowly activated dampening system

    • Quick activated mobilizing system

    • More quiz response dampening system

    Correct Answer
    A. Quick response mobilizing system
    Explanation
    The more modern characterization of the sympathetic nervous system is as a quick response mobilizing system. This means that it is responsible for activating the body's fight-or-flight response in times of stress or danger. It quickly mobilizes the body's resources to prepare for action, increasing heart rate, dilating blood vessels, and releasing stress hormones. This characterization highlights the system's role in rapidly responding to external stimuli and preparing the body for immediate action.

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  • 11. 
    Given the iris which is an autonomic effector. What is sympathetic stimulation reaction? - ProProfs

    Given the iris which is an autonomic effector. What is sympathetic stimulation reaction?

    • Contraction of radial muscles; dilated pupil

    • Relaxation; accommodates for near vision

    • Contraction of circular muscle; constricted pupil

    • Increased epinephrine secretion

    • No Effect

    Correct Answer
    A. Contraction of radial muscles; dilated pupil
    Explanation
    Sympathetic stimulation causes the contraction of the radial muscles in the iris, which leads to the dilation of the pupil. This is a well-known physiological response that occurs during fight-or-flight situations. The contraction of the radial muscles allows more light to enter the eye, enhancing visual acuity and preparing the body for potential danger.

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  • 12. 

    Select three functions of the Autonomic Nervous System from the list below.

    • Regulates heartbeat

    • Regulates smooth muscle contractions

    • Regulates glandular secretion

    • Controls petallar reflex

    Correct Answer(s)
    A. Regulates heartbeat
    A. Regulates smooth muscle contractions
    A. Regulates glandular secretion
    Explanation
    The autonomic nervous system is responsible for regulating various involuntary bodily functions. It controls the heartbeat, ensuring that it beats at an appropriate rate and rhythm. It also regulates smooth muscle contractions, which are important for processes such as digestion and breathing. Additionally, the autonomic nervous system controls glandular secretion, which involves the release of hormones and other substances by glands throughout the body.

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  • 13. 

    The preganglionic, or first, neuron will begin at the “outflow” and will synapse at the _____ _____, or second, neuron’s cell body. Which this neuron will then synapse at the target organ.

    • Preganglionic neuron

    • Postganglionic neuron

    • Motor neuron

    • Sensory neuron

    Correct Answer
    A. Postganglionic neuron
    Explanation
    The preganglionic neuron originates at the "outflow" and synapses at the postganglionic neuron's cell body. The postganglionic neuron then synapses at the target organ.

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  • 14. 

    There are usually 21 - 23 sympathetic chain ganglia on each side of the vertebral column. How many sacral are there?

    • 2 or 3

    • 4 or 5

    • 11

    • 8 or 9

    Correct Answer
    A. 4 or 5
    Explanation
    The question is asking about the number of sacral ganglia. The sympathetic chain ganglia are located on each side of the vertebral column, but the sacral ganglia are not specified in the question. Therefore, it is not possible to determine the exact number of sacral ganglia. However, it is known that there are typically 4 or 5 sacral ganglia.

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  • 15. 
    During the sympathetic "fight-or-flight" reaction What is the response to "an increased dissipation of heat generated by skeletal muscle activity? - ProProfs

    During the sympathetic "fight-or-flight" reaction What is the response to "an increased dissipation of heat generated by skeletal muscle activity?

    • Dilation of respiratory airways

    • Increased depth and rate of breathing

    • Increased sweating

    • Contraction of blood reservoirs and spleen

    • Increased conversion of glycogen into glucose

    Correct Answer
    A. Increased sweating
    Explanation
    During the sympathetic "fight-or-flight" reaction, the body prepares to respond to a perceived threat or danger. One of the responses to an increased dissipation of heat generated by skeletal muscle activity is increased sweating. Sweating helps to cool down the body by evaporating sweat from the skin's surface, which helps to regulate body temperature. This response is part of the body's effort to maintain homeostasis and prevent overheating during periods of increased physical activity or stress.

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  • 16. 

    In the parasympathetic system, ganglionic neurons use acetylcholine as a neurotransmitter to stimulate _____ receptors.

    • Muscarinic

    • Acetylcholine

    • Nicotinic

    • Monoamine oxidase

    Correct Answer
    A. Muscarinic
    Explanation
    In the parasympathetic system, ganglionic neurons use acetylcholine as a neurotransmitter to stimulate muscarinic receptors. Muscarinic receptors are a type of cholinergic receptor that is activated by acetylcholine. These receptors are located in various organs and tissues throughout the body and play a role in regulating various physiological processes, such as smooth muscle contraction, glandular secretion, and heart rate. Activation of muscarinic receptors by acetylcholine leads to the parasympathetic response, which is responsible for rest and digest activities in the body.

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  • 17. 

    There are usually 22 sympathetic chain ganglia on each side of the vertebral column. How many thoracic are there?

    • 3

    • 4

    • 12

    • 8

    Correct Answer
    A. 12
    Explanation
    The correct answer is 12 because there are usually 12 thoracic sympathetic chain ganglia on each side of the vertebral column.

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  • 18. 
    Postganglionic axons of autonomic neurons are usually_____. - ProProfs

    Postganglionic axons of autonomic neurons are usually_____.

    • Myelinated

    • Unmyelinated

    • Larger than preganglionic fibers

    • Located in the spinal cord

    • Smaller than preganglionic fibers

    Correct Answer
    A. Unmyelinated
    Explanation
    Postganglionic axons of autonomic neurons are usually unmyelinated. This lack of myelination allows for slower conduction of nerve impulses, which is important in regulating involuntary bodily functions. Unmyelinated axons also have a higher density of ion channels, allowing for more efficient signal transmission. Additionally, the absence of myelin sheath allows for more branching and synapses, enabling widespread communication with target cells. Therefore, unmyelinated postganglionic axons are better suited for the diffuse and diverse functions of the autonomic nervous system.

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  • 19. 

    Dilating blood vessels leading to the GI tract, increasing blood flow is a sympathetic nervous system. This is important following the consumption of food, due to the greater metabolic demands placed on the body by the gut.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    parasympathetic nervous system

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  • 20. 
    During the sympathetic "fight-or-flight" reaction What is the response to "increased delivery of nutrients and oxygen to skeletal muscles? - ProProfs

    During the sympathetic "fight-or-flight" reaction What is the response to "increased delivery of nutrients and oxygen to skeletal muscles?

    • Increased heart rate

    • Increased strength of cardiac muscle contraction

    • Dilation of coronary vessels of the heart

    • Constriction of blood vessels in skeletal muscles

    • Constriction of blood vessels in digestive & other organs

    Correct Answer
    A. Constriction of blood vessels in skeletal muscles
    Explanation
    During the sympathetic "fight-or-flight" reaction, the body prepares for physical activity by redirecting blood flow to the muscles that need it the most. This is achieved by constricting the blood vessels in the skeletal muscles, which reduces blood flow to these areas. By doing so, more blood and oxygen can be delivered to the vital organs and tissues, such as the heart and brain, ensuring their optimal function during the stressful situation. This response helps to prioritize the delivery of nutrients and oxygen to the muscles that are crucial for immediate physical action.

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  • 21. 
    During the sympathetic "fight-or-flight" reaction What is the response to "increased amount of glucose available to skeletal muscles? - ProProfs

    During the sympathetic "fight-or-flight" reaction What is the response to "increased amount of glucose available to skeletal muscles?

    • Dilation of respiratory airways

    • Increased depth and rate of breathing

    • Increased sweating

    • Contraction of blood reservoirs and spleen

    • Increased conversion of glycogen into glucose

    Correct Answer
    A. Increased conversion of glycogen into glucose
    Explanation
    During the sympathetic "fight-or-flight" reaction, the body prepares for physical exertion by increasing the availability of glucose to skeletal muscles. This is achieved through the increased conversion of glycogen into glucose. Glycogen is a stored form of glucose in the liver and muscles, and it is broken down into glucose to provide a readily available source of energy for the muscles. By increasing the conversion of glycogen into glucose, the body ensures that there is enough fuel for the skeletal muscles to carry out the required physical activity during the fight-or-flight response.

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  • 22. 

    Our autonomic nervous system functions can be divided into sensory (afferent) and motor (efferent) subsystems. Relatively recently, a third subsystem of neurons that have been named _____ _____

    • Sensory (afferent)

    • Motor (efferent)

    • Non-noradrenergic transmitters

    • Paravertebral transmitters

    Correct Answer
    A. Non-noradrenergic transmitters
    Explanation
    The correct answer is "non-noradrenergic transmitters." The autonomic nervous system consists of sensory (afferent) and motor (efferent) subsystems. However, in addition to these two subsystems, there is a third subsystem of neurons known as non-noradrenergic transmitters. These neurons release neurotransmitters other than noradrenaline, such as acetylcholine or dopamine, to transmit signals within the autonomic nervous system.

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  • 23. 

    Which division of the nervous system this system is the primary mechanism in control of the fight-or-flight response and the freeze-and-dissociate response? (HINT: please use a capital letter for the start of each word.)

    Correct Answer
    Autonomic Nervous System
    Explanation
    The autonomic nervous system is the primary mechanism in control of the fight-or-flight response and the freeze-and-dissociate response. This division of the nervous system regulates involuntary bodily functions and is responsible for maintaining homeostasis in the body. It controls processes such as heart rate, digestion, and breathing, and plays a crucial role in responding to stress and danger.

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  • 24. 

    There are usually 21 - 23 sympathetic chain ganglia on each side of the vertebral column. How many cervicals are there?

    • 3

    • 4

    • 11

    • 8

    Correct Answer
    A. 3
    Explanation
    The question asks for the number of cervicals, which refers to the cervical vertebrae in the vertebral column. The correct answer is 3 because there are typically 7 cervical vertebrae in the human vertebral column.

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  • 25. 
    During the sympathetic "fight-or-flight" reaction What is the response to "more blood is discharged into general circulation, thus causing increased delivery of oxygen and glucose to skeletal muscles? - ProProfs

    During the sympathetic "fight-or-flight" reaction What is the response to "more blood is discharged into general circulation, thus causing increased delivery of oxygen and glucose to skeletal muscles?

    • Dilation of respiratory airways

    • Increased depth and rate of breathing

    • Increased sweating

    • Contraction of blood reservoirs and spleen

    • Increased conversion of glycogen into glucose

    Correct Answer
    A. Contraction of blood reservoirs and spleen
    Explanation
    During the sympathetic "fight-or-flight" reaction, the body prepares itself for action by increasing the delivery of oxygen and glucose to the skeletal muscles. One way it does this is by constricting blood vessels in non-essential areas and redirecting blood flow to the muscles. This includes the contraction of blood reservoirs, which are areas where blood is stored, and the spleen. By constricting these reservoirs, more blood is made available for circulation, allowing for increased delivery of oxygen and glucose to the muscles.

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  • 26. 

    There are usually 21 - 23 sympathetic chain ganglia on each side of the vertebral column. How many lumbar sympathetic chain ganglia are there?

    • 2 or 3

    • 4 or 5

    • 11

    • 8 or 9

    Correct Answer
    A. 2 or 3
    Explanation
    The question asks about the number of lumbar sympathetic chain ganglia, which are located on each side of the vertebral column. The correct answer is 2 or 3 because the lumbar region typically has two or three sympathetic chain ganglia.

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  • 27. 
    Select two answers below that the Autonomic Nervous System supplies to the duodenum. - ProProfs

    Select two answers below that the Autonomic Nervous System supplies to the duodenum.

    • Vagus Nerve

    • Celiac Plexus

    • Phrenic Nerve

    • Lumbar Splanchnic Nerves

    Correct Answer
    A. Vagus Nerve
    Explanation
    The vagus nerve is a part of the autonomic nervous system and supplies the duodenum. It plays a crucial role in regulating the digestive system by controlling the movement and secretion of the gastrointestinal tract. The vagus nerve stimulates the release of digestive enzymes and increases blood flow to the digestive organs, including the duodenum. Therefore, it is responsible for the autonomic innervation of the duodenum.

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  • 28. 
    Select three answers below that the Autonomic Nervous System supplies to the gallbladder and liver. - ProProfs

    Select three answers below that the Autonomic Nervous System supplies to the gallbladder and liver.

    • Vagus Nerve

    • Celiac Plexus

    • Phrenic Nerve

    • Lumbar Splanchnic Nerves

    Correct Answer(s)
    A. Vagus Nerve
    A. Celiac Plexus
    A. Phrenic Nerve
    Explanation
    The autonomic nervous system supplies the gallbladder and liver with nerve impulses to regulate their functions. The vagus nerve is responsible for parasympathetic innervation of these organs, promoting digestion and bile secretion. The celiac plexus, a network of nerves located in the abdomen, also plays a role in regulating the functions of the gallbladder and liver. The phrenic nerve, which originates in the neck and passes through the chest, provides sympathetic innervation to these organs, controlling their blood flow and metabolic activities.

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  • 29. 
    Given skin blood vessels which is an autonomic effector. What is parasympathetic stimulation reaction? - ProProfs

    Given skin blood vessels which is an autonomic effector. What is parasympathetic stimulation reaction?

    • Constriction (alpha receptors)

    • Constriction (beta receptors)

    • Increased rate of contraction

    • Decreased peristalsis (beta receptors)

    • No Effect

    Correct Answer
    A. No Effect
    Explanation
    Parasympathetic stimulation does not have an effect on skin blood vessels. The parasympathetic nervous system is responsible for regulating rest and digest functions, such as digestion and slowing down the heart rate. It does not directly control the constriction or dilation of blood vessels in the skin. Therefore, the correct answer is "No Effect."

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  • 30. 
    Given "cardiac muscle" which is an autonomic effector. What is parasympathetic stimulation reaction? - ProProfs

    Given "cardiac muscle" which is an autonomic effector. What is parasympathetic stimulation reaction?

    • Decreased rate & strength of contraction

    • Constriction (beta receptors)

    • Increased rate of contraction

    • Decreased peristalsis (beta receptors)

    • No Effect

    Correct Answer
    A. No Effect
    Explanation
    Parasympathetic stimulation does not have any effect on the cardiac muscle. This means that it does not cause any changes in the rate or strength of contraction, constriction, increased rate of contraction, or decreased peristalsis. The parasympathetic nervous system mainly controls rest and digestion, and its effects on the heart are minimal compared to the sympathetic nervous system. Therefore, the correct answer is "No Effect."

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  • 31. 
    During the sympathetic "fight-or-flight" reaction What is the response to "shunting of blood to skeletal muscles to increase oxygen and glucose delivery? - ProProfs

    During the sympathetic "fight-or-flight" reaction What is the response to "shunting of blood to skeletal muscles to increase oxygen and glucose delivery?

    • Increased heart rate

    • Increased strength of cardiac muscle contraction

    • Dilation of coronary vessels of the heart

    • Constriction of blood vessels in skeletal muscles

    • Constriction of blood vessels in digestive & other organs

    Correct Answer
    A. Constriction of blood vessels in digestive & other organs
    Explanation
    During the sympathetic "fight-or-flight" reaction, the body prepares itself for physical activity and danger. One of the responses to this reaction is the shunting of blood to skeletal muscles to increase oxygen and glucose delivery. In order to redirect blood flow to the skeletal muscles, the blood vessels in the digestive and other organs constrict. This constriction reduces blood flow to these organs, allowing more blood to be directed to the skeletal muscles, which are needed for physical exertion during the fight-or-flight response.

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  • 32. 
    During the sympathetic "fight-or-flight" reaction What is the response to "increased rate of blood flow, thus increased delivery of glucose and oxygen to skeletal and heart muscles? - ProProfs

    During the sympathetic "fight-or-flight" reaction What is the response to "increased rate of blood flow, thus increased delivery of glucose and oxygen to skeletal and heart muscles?

    • Increased heart rate

    • Increased strength of cardiac muscle contraction

    • Dilation of coronary vessels of the heart

    • Constriction of blood vessels in skeletal muscles

    • Constriction of blood vessels in digestive & other organs

    Correct Answer
    A. Increased strength of cardiac muscle contraction
    Explanation
    During the sympathetic "fight-or-flight" reaction, the body prepares for intense physical activity. One of the responses to this reaction is an increased rate of blood flow, which leads to increased delivery of glucose and oxygen to skeletal and heart muscles. The increased strength of cardiac muscle contraction helps to pump more blood and deliver the necessary nutrients and oxygen to the muscles efficiently. This response ensures that the heart can meet the increased demand for oxygen and nutrients during times of stress or physical exertion.

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  • 33. 
    During the sympathetic "fight-or-flight" reaction What is the response to "increased rate of oxygen and nutrients to the cardiac muscle to sustain an increased rate and strength of heart contractions? - ProProfs

    During the sympathetic "fight-or-flight" reaction What is the response to "increased rate of oxygen and nutrients to the cardiac muscle to sustain an increased rate and strength of heart contractions?

    • Increased heart rate

    • Increased strength of cardiac muscle contraction

    • Dilation of coronary vessels of the heart

    • Constriction of blood vessels in skeletal muscles

    • Constriction of blood vessels in digestive & other organs

    Correct Answer
    A. Dilation of coronary vessels of the heart
    Explanation
    During the sympathetic "fight-or-flight" reaction, the body prepares for physical exertion by increasing the heart rate and the strength of cardiac muscle contractions. To sustain this increased activity, the body also needs to provide an increased rate of oxygen and nutrients to the cardiac muscle. This is achieved through the dilation of coronary vessels of the heart, which allows for a greater flow of blood to the cardiac muscle, ensuring an adequate supply of oxygen and nutrients.

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  • 34. 
    Given skin blood vessels which is an autonomic effector. What is sympathetic stimulation reaction? - ProProfs

    Given skin blood vessels which is an autonomic effector. What is sympathetic stimulation reaction?

    • Constriction (alpha receptors)

    • Constriction (beta receptors)

    • Increased rate of contraction

    • Decreased peristalsis (beta receptors)

    • No Effect

    Correct Answer
    A. Constriction (alpha receptors)
    Explanation
    Sympathetic stimulation activates alpha receptors in skin blood vessels, causing constriction. This response is part of the body's fight or flight response, where blood vessels constrict to redirect blood flow to vital organs and muscles. This helps to increase blood pressure and prepare the body for physical activity or stress.

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  • 35. 
    During the sympathetic "fight-or-flight" reaction What is the response to "increased rate of blood flow, thus increased delivery of glucose and oxygen to skeletal muscles? - ProProfs

    During the sympathetic "fight-or-flight" reaction What is the response to "increased rate of blood flow, thus increased delivery of glucose and oxygen to skeletal muscles?

    • Increased heart rate

    • Increased strength of cardiac muscle contraction

    • Dilation of coronary vessels of the heart

    • Constriction of blood vessels in skeletal muscles

    • Constriction of blood vessels in digestive & other organs

    Correct Answer
    A. Increased heart rate
    Explanation
    During the sympathetic "fight-or-flight" reaction, the body prepares for physical activity by increasing the rate of blood flow. This is achieved through an increased heart rate, which allows for a greater volume of blood to be pumped to the muscles. This increased blood flow delivers more glucose and oxygen to the skeletal muscles, providing them with the necessary energy and nutrients to respond to the perceived threat or stressor.

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  • 36. 
    Given "coronary blood vessels" which is an autonomic effector. What is sympathetic stimulation reaction? - ProProfs

    Given "coronary blood vessels" which is an autonomic effector. What is sympathetic stimulation reaction?

    • Constriction (alpha receptors)

    • Constriction (beta receptors)

    • Dilation (alpha receptors)

    • Dilation (beta receptors)

    • No Effect

    Correct Answer
    A. Dilation (alpha receptors)
    Explanation
    Sympathetic stimulation typically leads to constriction of blood vessels. However, in the case of coronary blood vessels, sympathetic stimulation causes dilation instead of constriction. This dilation is specifically mediated by alpha receptors.

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  • 37. 
    During the sympathetic "fight-or-flight" reaction What are the two (2) responses to increased loading of oxygen into the blood? - ProProfs

    During the sympathetic "fight-or-flight" reaction What are the two (2) responses to increased loading of oxygen into the blood?

    • Dilation of respiratory airways

    • Increased depth and rate of breathing

    • Increased sweating

    • Contraction of blood reservoirs and spleen

    • Increased conversion of glycogen into glucose

    Correct Answer(s)
    A. Dilation of respiratory airways
    A. Increased depth and rate of breathing
    Explanation
    During the sympathetic "fight-or-flight" reaction, the body prepares for physical activity and increased oxygen demand. Dilation of respiratory airways allows for better airflow, ensuring that more oxygen can enter the lungs. Increased depth and rate of breathing helps to increase the amount of oxygen taken in and delivered to the tissues. These responses are necessary to meet the increased oxygen requirements during times of stress or physical exertion.

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  • Current Version
  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • May 04, 2016
    Quiz Created by
    John Mitchell

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