1. What are the target tissues for the ANS? 2. Select the correct response: The
ID: 3478822 • Letter: 1
Question
1. What are the target tissues for the ANS? 2. Select the correct response: The autonomic nervous system is best described as A. The part of the peripheral nervous system that is under voluntary control. B. The part of the peripheral nervous system that innervates skeletal muscle and which has acetylcholine as the chemical transmitter C. The part of the peripheral nervous system that is involuntary and innervates smooth muscles, cardiac muscles, and gland cells. D. The part of the peripheral nervous system that is involuntary and is frequently referred to as the adrenergic nervous system. 3. Why is the ANS function called visceral reflex? 4. What are the two divisions of the ANS? What phrase describes the parasympathetic nervous system? What structural phrase describes the sympathetic nervous system? Describe general functions of each division. 5. Compare the autonomic and somatic motor systems in terms of the following parameters: Differences Somatic Nervous System Autonomic Nervous System Sensory Input Control of Motor Output # of neurons in efferent pathways Neurotransmitter/ receptor at neuron - target synapse Target tissue Effects on target tissue Peripheral components found outside the CNS 6. What is the meaning of ANS dual innervation? Examples? Name the organs that only have sympathetic innervation. 7. Explain why parasympathetic activation is local and discrete, and sympathetic activation can result in mass activation.Explanation / Answer
1. The target tissues for the autonomic nervous system (ANS) are smooth muscles, cardiac muscles and glands. It also monitors visceral organs.
2. The autonomic nervous system is a part of peripheral nervous system that is involuntary and innervates the functions of smooth muscles, cardiac muscles and glands.
Hence option (C) is correct.
3.The autonomic nervous system (ANS) often involve the internal organs of the body such as soft tissues of digestive and reproductive system. That is why it is called visceral reflex.
4. The two divisions of autonomic nervous system are sympathetic nervous system (SNS) and parasympathetic nervous system (PNS).
Parasympathetic nervous system is described by the phrase " rest and digest". Sympathetic nervous system is described by the phrase "fight and flight".
Sympathetic nervous system adapts body for physical activities, increases alertness, heart rate, blood pressure and blood glucose concentration. It increases blood flow to cardiac and skeletal muscles.
The functions of parasympathetic nervous system are opposite to sympathetic nervous system. It slows heart rate, constricts pupil and dilates blood vessels. It helps in digestion and waste elimination.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.