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- 7. Explain how a nerve impulse is conducted from one neuron to another.5.. How would your nervous system respond if you encounter a snake on a hiking trail? The parasympathetic nervous system would send signals to increase the heart rate, decrease salivation, and increase respiration The somatic nervous system sends signals to the central nervous system to increase heart rate and respiration. The sympathetic nervous system would send signals to increase the heart rate, decrease salivation, and increase respiration The autonomic nervous systern would send signals to the somatic nervous system to increase respiration and heart rate1. What statement is true regarding the peripheral nervous system (PNS)? x The efferent division of the PNS is transmits information from sensory receptors to the brain X The somatic division of the PNS refers to the innervation of the internal organs of the body X The ventral root of the spinal nerve transmits afferent information to the spinal cord x The autonomic nervous system is a branch of the visceral efferent division of the PNS
- 4. In one to two sentences... describe the somatic and autonomic nervous systems7.Which among the following statement is INCORRECT?(This is a multiple choice question choose the answer from the choices below) A.Motor neurons can cause the secretion of hormones from endocrine glands in addition to affecting the movement of muscles B.Sensory neurons send signals away from the CNS and elicit some type of response C.Motor neurons are efferent neurons that leave the CNS and act on distant cells D.Sensory neurons receive a stimulus either directly or from a specialized sensory receptor cell, and pass the signal on to the CNS6. Which of the following combinations correctly identifies properties of a type of neuron? K L M Neuron Sensory Motor Interneuron Motor Structure Long axons Long axons Short axons Short axons Function Transmit nerve impulses to the central nervous system Relay nerve impulses from sensory to interneurons Relay nerve impulses from motor to sensory neurons Transmit nerve impulses to the peripheral nervous system
- 1. What would occur if there were holes in the myelin of a nerve cell that were not nodes? If there was a disease of the cerebrospinal fluid which cells would be effected first? Which cells would respond? Acetylcholine is a well-known neurotransmitter at the neuromuscular junction (excitatory) and cardiac muscle (inhibitory). Explain how this works, and why this is interesting and useful?2. Which of the following is not one of the basic functions of the nervous system? a. Formulate responses to sensory stimulation b. Send signals rapidly between body parts c. Produce major body fluids such as plasma and interstitial tissue fluid d. Detect sense stimuli 3. One example of a function of neuroglial cells is to... a. Add myelin to axons b. Produce neurotransmitters c. Bind neurotransmitters d. Link one neuron cell to another at thesynapse13. A nerve stimulus may be an environmental change that is capable of a. Neutralizing the charge of a neuron b. Changing the polarity of a neural membrane c. Initiating the refractory period of the cell membrane d. Initiating hormone release from the dendrites of a neuron 14. A person who accidentally touches a hot stove immediately withdraws the affected hand. The motor action involved is the result of a. A reflex arc that does not require brain co-ordination b. An automatic reflex regulated by parasympathetic nerves c. An automatic reflex regulated by sympathetic nerves d. A reflex arc that requires brain co-ordination 15. A motor neuron will stimulate an effector if a. The refractory period does not exceed the resting period b. The travelling impulse does not affect the polarity of the axon c. Inhibitory substances prevent an overload at the synaptic cleft d. Sufficient excitatory impulses are received from associate neurons