Transmission of the nerve signal across a synapse is accomplishedby thea. movement of Na+ and K+.b. release of a neurotransmitter by a dendrite.c. release of a neurotransmitter by an axon.d. release of a neurotransmitter by a cell body.e. All of these are correct.

Q: Which of the following sentences is NOT correct? A. Axon can branch B. Afferent neurons are…

A: Axons can divide into many branches called telodendria. At the end of each telodendron is an axon…

Q: What event triggers an action potential?a. Opening of sodium channelsb. Opening of delayed potassium…

A: 1- Opening of delayed potassium channels 3-High concentration of negative ions outside the cell.…

Q: The Na+/K+ ATPase pump is a. not required for action potential firing. b. important for…

A: Introduction  Chloride is the most abundant anion in the extracellular fluid. Along with Chloride…

Q: which of the following does not describe the somatic nervous system? A.  motor neurons that…

A:

Q: Which of these may be produced by the action of nitric oxide? a. Dilation of blood vessels b.…

A: Nitric oxide(NO) is a chemical compound. In mammals nitric oxide is a signalling molecule involved…

Q: Which of the following is TRUE regarding the absolute and relative refractory periods of the action…

A: The relative refractory period is that the interval of your time throughout that a second action…

Q: Another name for the axon of a neuron is:- a. nerve fiber. b. neurofibril. c. neurilemma. d.…

A: Answer- Neuron is the main cell of the nervous system that helps in conduction of nerve impulses or…

Q: The purpose of the autonomic nervous system is to do all of the following excepta. stimulate…

A: Autonomic nervous system is the division of the peripheral nervous system which controls the…

Q: Transmission of the nerve impulse across a synapse isaccomplished bya. the release of Na+ at the…

A: Introduction  Neuron/Nerve: A neuron is a single nerve cell which consists of central cell body,…

Q: The brain knows whether an incoming nerve impulse is light, sound, or pain because of thea. nature…

A: Reception is a process by which sensory receptor activates due to any stimulus it recieves. It is…

Q: What evidence led Sherrington to conclude that transmission at a synapse is different from…

A: The communication between one neuron and the next differs from the communication along a single…

Q: Like many neurotransmitters, serotonin (5-HT) can have different postsynaptic effects on different…

A: 1 ) Answer is option A.  There are several types of postsynaptic receptors for serotonin.

Q: The integrative functions of the nervous system are performed mainly bya. afferent neurons.b.…

A: The neuron’s functional classification is based on the direction the action potential travel to the…

Q: A fight-or-flight response in the body is controlled by thea. sympathetic division of the nervous…

A: The nervous system is highly complex among different organ systems in animals. By transmitting…

Q: The peripheral nervous system that transfers signal to the brain is the:a. sympathetic nervous…

A: KEY WORDS :- Peripheral nervous system - It involves nerves and ganglia present just outside the…

Q: At maximal stimulation, much above threshold, how long will it be until an axon fires the next AP?…

A: The action potential is defined as the quick variation in the membrane potential that occurs when a…

Q: In the mammalian nervous system, Schwann cells are: a. The same thing as neurons b. Wrapped around…

A: The nervous system of the body is responsible for the production of signals and conduction of the…

Q: Neurotransmitters are released by_____ . a. axon terminals c. dendrites b. a neuron cell body d.…

A:

Q: During the Refractory period of the action potential, the neuron will: Select one: O a. Not respond…

A: Nerve cells or neurons are excitable cells of nervous system. A typical neuron consists of cell body…

Q: Most human axons have a myelin sheath that_____ . a. prevents action potentials from moving backward…

A: The complex body of human being functions in a systemic and coordinated way, and this…

Q: Excitatory neurons A and B both synapse with neuron C. Neuron A releasesa neurotransmitter, and…

A: The junction between two neurons is known as a synapse and when a neuron reaches its action…

Q: Which of the following brain regions is not correctly matched to itsfunction?a. The medulla…

A: C.  Thalamus secretes melatonin.......

Q: At a chemical synapse, an action potential triggers an influx of Ca2+ which . Select one: O A.…

A: When the action potential reaches the presynaptic neuron terminal, it activates the voltage-gated…

Q: The ____ cannot be controlled by conscious thought. a. motor neurons b. somatic nervous system…

A: Answer: Introduction: The autonomic nervous system includes two portions the sympathetic and…

Q: The two primary factors that influence the speed of an action potential propagation are axon…

A: The nervous system is an exceptionally complex piece of a creature that arranges its activities and…

Q: Describe the passage of information through the nervous system using a specific example.Be sure to…

A: The explanation is given below.

Q: Following the activity of acetylcholinesterase, choline is A. Transported back into the neuron using…

A: The neurotransmitter acetylcholine (ACh) is released from pre-synaptic neuron into the synaptic…

Q: How do neurotransmitters directly affect the postsynaptic neuron? A)They cause a change in the…

A:

Q: In SA nodal cells the upstroke of the action potential: A)is characterized by a substantial…

A: The sino atrial node is the pacemaker of the heart. The cells of the sea node have a particular…

Q: Imagine that you're hiking in the mountains one afternoon with friends. As you turn to the corner,…

A:

Q: e) The velocity of nerve impulse conduction is the greatest in a) heavily myelinated, large-diameter…

A: There are two types of nerve fibers which are - Myelinated and non-myelinated nerve fibers. The…

Q: ) Neurons cannot respond during the absolute refractory period because: a) the concentration…

A: The absolute refractory period starts immediately after the initiation of the action potential and…

Q: Which of the following is true about the conduction of action potentials?

A: Generation of Action potential occurs in the axon. The action potential is generated due to opening…

Q: A drug is called an agonist if it ________.a. blocks a receptorb. interferes with neurotransmitter…

A: Drugs can be either antagonists or agonists. Antagonist drugs are those exogenous components, which…

Q: Suppose you want to cause the presynaptic terminal of an axon to release its transmitter. How could…

A: Synapse was name given by Sherrington. Synapse is junction between two neurons where information is…

Q: Neurotransmitters must pass from an axon terminal to the next dendrite by crossing a fluid-filled…

A: Neurons facilitate communication in the brain. A neuron is made up of dendrites (receives…

Q: Atropine   A.Tends to stimulate excitatory (sympathetic) functions.  B.Increaes heart rate.…

A: Atropine is an anticholinergic drug that acts on the sympathetic nervous system. It is also known to…

Q: In an experiment you place a neuron and its synaptic contacts into a medium containing no calcium…

A: Neuron  Neuron is basic structural and functional unit of brain. It helps in transmission of signal…

Q: A laboratory experiment is set up where you have two fully functional nerves properly aligned so…

A: When there is a rapid rise and then fall in the membrane potential or voltage across the membrane of…

Q: During the refractory period a) if a neuron reaches threshold the action potential goes to…

A: Neurons are the cells of the nervous system.

Q: A biologist finds that a post-neuron responds to a pre-neuron’s AP in a mammal through a cell…

A: The human brain alone contain over 100 billion neurons. Each neutron can have up to 10000…

Q: Somatic motor neurons have axons the conduct signals from the CNS to _ ; and are usually under _…

A: The nervous system is a complex system of nerves and specialized cells known as neurons. The nervous…

Q: Post-synaptic acetylcholine receptors are blocked by   A.Calcium ions B.Atropine  C.Nerve gases…

A: Acetylcholine is the chief neurotransmitter of the parasympathetic nervous system that controls the…

Q: Match the description with the statement that best describes the following neural circuits. a single…

A: Neural circuits are groups of neurons interconnected by synapses to carry out a specific function…

Q: During saltatory conduction, action potentials are generated: a. along the entire length of the…

A: A neuron is the functional unit of the nervous system. Neurons are excitable cells that transmit…

Emotions

Emotions are biologically based psychological conditions caused by neurophysiological changes which are linked to different factors such as thoughts, emotions, behavioral responses, and pleasure or displeasure. These emotions are not similar to moods. The mood is an affective state. Mood depends upon several factors, such as weather, the environment, physiology, etc. Emotions can be beneficial or detrimental depending on the situation. Emotional reactions are simple. Emotional well-being is strongly affected by our well-being, and such feelings are private.