Explain the process of Conduction of a nerve impulse along a nerve fibre.

Q: Explain how a nerve impulse is initiated and transmitted along a neurone and across the synaptic gap

A: The neurons that basic fundamental units of the nervous system and also called ass nerve cells. Just…

Q: Identify and describe the events that occur after injury to aPNS axon.

A: The nervous system is a complicated organ system in the body that transmit nerve impulses between…

Q: Explain the process of Depolarisation of the membrane of a nerve fibre.

A: The action potential is the nerve signals that are produced by the neurons. These signals are…

Q: Name the neurotransmitter that conducts nerve impulse through synapse.

A: Neurotransmitters are signalling molecules that act on receptors of postsynaptic neurons. Neurons…

Q: Describe how the connective tissue wrappings of a nerve compare to those of a muscle.

A: Types of muscle fiber: Smooth muscle cells are spindle-shaped cells with a single nucleus, present…

Q: Describe the actions of THREE different neurotransmitters..

A:

Q: Explain the relationship between threshold potential and an action potential.

A: An action potential can be defined as the phenomenon when there occurs at excitation of the nerve or…

Q: Describe how action potentials are produced, and their neural pathways.

A: Neurons are the basic unit of the nervous system that carry electrical stimuli throughout the body.…

Q: Distinguish among the types of neuroglia in the central nervous system.

A: Neuroglia is the supporting cells of the central nervous system. It helps to protect, support,…

Q: Describe the actions of the neurotransmitters

A: There are over forty neurotransmitters within the human nervous system; a number of the foremost…

Q: Construct a personalized flow chart and show the summary of the events involved for the propagation…

A: A Synapse is an area in which neuron basically communicate with each other . Transmission of signal…

Q: Describe the sequence of activation of ion channels leading to action potential propagation.

A: The action potential is produced in a nerve or muscle when it is stimulated. It is the method of…

Q: Describe the characteristics of action potentials and explain how they are conducted by unmyelinated…

A: The minimum electrical potential required to do a muscle contraction or any action is called action…

Q: What happens to the membrane potential when a nerve cell is stimulated?

A: The human nervous system consists of billions of nerve cells and supporting cells, neuroglial cells.…

Q: Describe the conditions under which axons can regenerate

A: Axons, also called as nerve fiber is the main part of the body of a neuron that carries nerve…

Q: Describe nerve impulse propagation including: Continuous and saltatory conduction Factors affecting…

A: Action potentials are changes in the resting membrane potential that are actively propagated along…

Q: identify the major parts of a nerve cell;

A: The nervous system is one of the most complex organ systems of the body. The nervous system is…

Q: neurology, Will abolishing extracellular calcium concentration prevent electrical neuro transmission…

A: When the action potential reaches the nerve terminal, it activates voltage-dependent calcium…

Q: Differentiate between nerve impulse and electric current.

A: The location where a terminal with an  axon meets another cell is called a synapse.  This is where…

Q: Trace how a nerve impulse is passed along a neuron.

A: The nervous system is made up of nerves. A nerve is a bundle of nerve cells. A nerve cell that…

Q: State the all-or-none law of the action potential.

A: When excitable cells such as a neuron, muscle cells, and endocrine cells are given a stimulus, the…

Q: Compare between the trasmission of impulse at the synapse and transmission of impulse along the axon

A: The transmission of nerve impulse  along a neuron from one end to the other occurs as a result of…

Q: List and describe structures and functions of neuroglia of the peripheral nervous system.

A: Peripheral nervous system - The peripheral nervous system refers to parts of the nervous system…

Q: Briefly describe what happens to the myelin sheath and how it disrupts nerve function in patients…

A: Multiple sclerosis (MS) is a disabling condition that affects the central nervous system (CNS),…

Q: State the other name of neuroglia.

A: Nervous system coordinates and controls the activities of the animals such as perceptions, behaviors…

Q: Illustrate the generation of a nerve impulse ?

A: Introduction: The generation of nerve impulses signifies the generation of the action potential. The…

Q: Name the outer covering of nerve fibres.

A: A  nerve is the bundle of nerve fibres, either dendrites or axons surrounded by connective tissues.…

Q: Explain how an action potential is generated, propagated, and terminated in skeletal muscles (hint:…

A: The action potentials are basically the nerve signals that are generated by the neurones and…

Q: State the functions of the axon terminal and its synapticvesicles

A: Axon terminals are tiny swellings that occur at the termination of axons. They are also any of the…

Q: Describe the difference between the nerve and muscle in response to increasing stimulus voltage.

A: Introduction A nerve is a cable-like structure within the body composed of neurons that uses…

Q: Give some characteristics of reticular fibres.

A: The tissues are formed by a group of cells with similar structure and function together to perform a…

Q: Explain the chemical base of neurotransmitter..

A: Neurotransmitters are endogenous chemicals that enable the process of neurotransmission. They…

Q: The action potential is fired by: - Opening K+ channels by subthreshold response p- Opening Na…

A: Action potential can be outlined as the phenomenon in which there occurs rapid increase in the…

Anatomy and Physiology of Special Sensory Organs

Sensory organs can be labeled as special sensory structures that permit sight, hearing, odor, and flavor. Sensory structures permitting proprioception, touch, thermal, and pain perception can be classified as more advanced sensory organs. The sensory neurons are trained to find out modifications in the external and internal conditions so that a person's body can react to that change. A stimulus is the first signal that is recognized by any sensory receptor of the body. Stimulus is an impulse generated when there is a change in the surroundings of a person. For example, a heated environment will alert the brain through the thermal sensory organs and generate a reflex accordingly.

Sensory Receptors

The human sensory system is one of the most complex and highly evolved structures, which processes a myriad of incoming messages. This well-coordinated system helps an organism or individual to respond to external stimuli, appropriately. The sensory receptors are an important part of the sensory system. These receptors are specialized epidermal cells that respond to external environmental stimuli. These receptors consist of structural and support cells that form the peripheral unit of the receptor and the neural dendrites which receive and detect the external stimuli.