Which statement describes the depolarization of a nerve?  A. Depolarization occurs across the entire nerve at one time.  B. channels that are normally closed will open, allowing to pass through the membrane C.Depolarization starts at the axon and ends at the dendrite.  D. The electrical charge of the fluid inside the nerve becomes more negative

Q: Cocaine is commonly referred to a hallucinagen because it makes the mind race? A.  True B.…

A: Cocaine is a drug that underlies in the stimulant category of the drugs. The cocaine is extracted in…

Q: How well did Sherrington’s inferences about synapses harmonize with Cajal’s conclusions about the…

A: The term synapse was introduced by Charles Scott Sherrington which refers to the communication point…

Q: Which statement is not right about cell voltages? A. When Na+ rush inside a cell, K+ react by…

A: A cell membrane is usually semipermeable, that is it permits the transport of water but is…

Q: If implanted electrodes were used to stimulate action potentials in gamma motor neurons to flexors…

A: When gamma motor neurons are activated, the striated ends of a muscle fiber are stimulated, thus…

Q: If a disease damages someone’s myelinated somatosensory axons without damaging the unmyelinated…

A: The nervous framework is an exceptionally intricate piece of a creature that arranges its activities…

Q: If a person is born blind, what happens to the occipital (“visual”) cortex?A. Its cells shrink and…

A: People often say that blind people become better than usual at touch and hearing. If a person is…

Q: When the neuron’s membrane is at rest, where are the sodium ions and potassium ions most…

A: Answer is b.) Sodium is mostly inside and potassium is mainly outside.

Q: Suppose you suffer a cut through the spinal cord on the left side only. For the part of the body…

A: In the human body, the perception of sensory signals is mediated through the sensory receptors. Upon…

Q: Which neurotransmitter is important in reward-basedlearning and drug addiction?a. ACh c. dopamineb.…

A: A neurotransmitter can be defined as a chemical messenger, transmitting the messages from a nerve…

Q: Activation of PKC in the direct perforant pathway leads to which effect? a. insertion of new AMPA…

A: Protein kinase C is a family of protein kinase enzymes that are involved in  controlling the…

Q: Which is TRUE about the autonomic nervous system? a. sympathetic activity causes vasodilation b.…

A: The autonomic nervous system (ANS) is a division of the peripheral nervous system (PNS) that…

Q: with the motor neuron, explain how an action potential

A: The nervous system generates a signal resulting in starting of muscle contraction. This signal…

Q: Where does collateral sprouting take place? a. In the cell body b. In the axon c. In the dendrites…

A: Collateral sprouting can be defined as the growth of intact axons into the neighbouring denervated…

Q: What happens to the membrane potential of a neuron when an action potential is stimulated?   A.…

A: The generation of action potential occurs muscle and neural cells in case of a sudden variation in…

Q: Which cranial nerve does not control functions in the head and neck? a. olfactory b. trochlear c.…

A: The cranial nerves are a set of 12 paired nerves that come directly from the brain. The first two…

Q: Where are parasympathetic preganglionic cell bodies located? a. cerebellum b. brainstem c. dorsal…

A: The autonomic nervous system (ANS) is the part of the peripheral nervous system that acts as a…

Q: Why does the velocity of nerve impulse conduction along the nerve decrease when the nerve is…

A: Neurons are the structural and functional unit of nervous system. They are long and branched. They…

Q: In an essay describe in detail the function for three type of potentials seen in neurons and give…

A: Neurons are the structural and functional unit of our nervous system. There are three types of…

Q: Which receptor is an adrenergic receptor that results in broncodialation when activated by agonist?…

A: The human body contains different types of receptors, which are proteins found on the surface of…

Q: In which species, if any, can axons regrow in the spinal cord? A. In humans only B. In fish C. In…

A: Answer is B.) in fish.

Q: In a essay format compare and  contrast the sympathetic and parasympathetic nervous systems…

A: The human neural system is the highly complex system of the body that mediates an efficient…

Q: Studies of the infant brain show signs of what scientists call synaptic pruning. What occurs during…

A: One of the most important and complex organs in the human body is the brain. Made up of billions of…

Q: When do neural discharges in the brain have their strongest effect? a. When the discharge rate of…

A: Introduction: The basic unit of communication in the nervous system is the nerve cell (neuron). Each…

Q: When you stub your toe, the sensation of touch is felt before the sensation of pain. Based on your…

A: The nervous system- is one of the complex body system that acts as a command center of the body. It…

Q: According to Sherrington, why do the extensor muscles of a leg relax when the flexor muscles…

A: Muscles are the organs of the muscular system and it can be classified into three types based on…

Q: Which nucleus in the thalamus is part of the limbic system? a. VA b. VPL c. VPM d. Anterior

A: The thalamus is a part of the diencephalon and is located deep in the forebrain, just above the…

Q: What is the role of nerve rings

A: A nerve ring is a ring of concentrated nervous tissue around the pharynx or oesophagus of many…

Q: Why are people unconscious during slow-wave sleep?A. Inhibitory transmitters block the spread of…

A: Investigators establish that each night, over the course of the initial hour of sleep, the brain…

Q: In  a essay format compare and contrast  in details the  function  and details of the sympathetic…

A: Our body is controlled by nervous system. We have central nervous system and peripheral nervous…

Q: Certain people in a vegetative state gave possible indication of consciousness by doing what? a.…

A: stem (the parts of the brain that control vital functions) continue to function. Thus, in a…

Q: Match each item to the correct statement below. 71. three layers of tough elastic tissue within the…

A: The three membrane layers that cover the brain and spinal cord are known as meninges. They protect…

Q: When the parasympathetic system is stimulated, what neurotransmitter is released? a. Acetylcholine…

A: Peripheral nervous system consists of 31 pairs of spinal nerves, 12 pairs of cranial nerves which…