What is the role of neurotransmitter?

What is the role of neurotransmitter?
by

1 Answer

Answer :

The terminal button at the end of the axon holds the synaptic vesicles. When the signal reaches the end of the axon the vesicles discharge a chemical called a neuro transmitter. Neurotransmitters are chemicals that are used to relay, amplify and modulate electrical signals between a neuron and another cell. There are approximately 40 to 60 different chemicals that are used as neurotransmitters. The neurotransmitters from the axon fit into receptors of the dendrite on the next neuron. They will then either excite the cell or make it fire or inhibit it and stop it from doing so. The sum of the excitation and inhibition of the neuron is called the graded potential. If the graded potential is greater than that cell's threshold then the cell fires, sending the message to the next cell.
by

Related questions

The following statement about histamine is not correct: A. It is the sole mediator of immediate hypersensitivity reaction B. It plays no role in delayed hypersensitivity reaction C. It serves as a neurotransmitter in the brain D. All types of histamine receptors are G protein coupled receptors

Description : The following statement about histamine is not correct: A. It is the sole mediator of immediate hypersensitivity reaction B. It plays no role in delayed hypersensitivity reaction C. It serves as a neurotransmitter in the brain D. All types of histamine receptors are G protein coupled receptors

Last Answer : A. It is the sole mediator of immediate hypersensitivity reaction

The following statement about histamine is not correct: A. It is the sole mediator of immediate hypersensitivity reaction B. It plays no role in delayed hypersensitivity reaction C. It serves as a neurotransmitter in the brain D. All types of histamine receptors are G protein coupled receptors

Description : The following statement about histamine is not correct: A. It is the sole mediator of immediate hypersensitivity reaction B. It plays no role in delayed hypersensitivity reaction C. It serves as a neurotransmitter in the brain D. All types of histamine receptors are G protein coupled receptors

Last Answer : A. It is the sole mediator of immediate hypersensitivity reaction

What is the role of pons?

Description : What is the role of pons?

Last Answer : The second part is the pons, which means bridge in Latin. The pons sits in front of the medulla, and wraps around it to the back. It is primarily the pathways connecting the two halves of the next part, which is called the cerebellum.

Write down the role of Hypothalamus?

Description : Write down the role of Hypothalamus?

Last Answer : The seat of the autonomic nervous system. Damage to the hypothalamus is quickly fatal as the normal homeostasis of body temperature, blood chemistry, etc. goes out of control. The source of 8 hormones, two of which pass into the posterior lobe of the pituitary gland.

What is the role of nervous system in human body?

Description : What is the role of nervous system in human body?

Last Answer : The nervous system is made up of a network of complex fibers known as nerves that thread throughout the human body like house hold wiring. The nerves conduct electrical signals back and ... The autonomic nervous system, which controls automatic functions such as breathing, heart beat and digestion.

Write down the role of Exocrine glands?

Description : Write down the role of Exocrine glands?

Last Answer : Exocrine glands release their secretions into ducts which in turn release them onto the surface of organs. Examples of exocrine glands are sweat glands, salivary glands, mammary glands, etc. ... digestive system while it also contains the Islets of Langerhans which secrete insulin into the blood.

What is the role of medulla?

Description : What is the role of medulla?

Last Answer : The first is the medulla, which is actually an extension of the spinal cord into the skull. Besides containing tracts up and down to and from the higher portions of the brain, the medulla ... of nuclei called the reticular formation. It is the regulatory system for sleep, waking, and alertness

Write down the role of an amygdale?

Description : Write down the role of an amygdale?

Last Answer : The amygdala appears to be a center of emotions. It sends signals to the hypothalamus and medulla which can activate the flight or fight response of the autonomic nervous system.

Write down the role of axons?

Description : Write down the role of axons?

Last Answer : Axons are organelles that carry information away from the cell body. Axons may be as small as several microns or as long as several meters in giraffes and whales. The axons main job is to send a ... only one axon, but the axon may have branches with what are called terminal buttons at its end.

Write down the role of dendrites?

Description : Write down the role of dendrites?

Last Answer : Dendrites are organelles that sense the neurotransmitter secreted by the axon of another neuron. Most neurons have more than one dendrite. Dendrites and axons do not directly touch each other; there is a gap, called a synapse.

What is the Bilaminar Zone:** A. Formed of, or having, two laminae, or thin plates. Which is the distal attachment of superior hard lateral plate B. A vascular, innervated tissue that plays an important role in allowing the condyle to move foreward

Description : What is the Bilaminar Zone:** A. Formed of, or having, two laminae, or thin plates. Which is the distal attachment of superior hard lateral plate B. A vascular, innervated tissue that plays an important role in allowing the condyle to move foreward

Last Answer : B. A vascular, innervated tissue that plays an important role in allowing the condyle to move foreward

What is the MOST important role of saliva in preventing dental caries: A. Buffering action

Description : What is the MOST important role of saliva in preventing dental caries: A. Buffering action

Last Answer : A. Buffering action

Platelets play an important role in haemostasis; which of the following describes this role? A. They convert fibrinogen to fibrin B. They agglutinate and plug small, ruptured vessels C. They initiate fibrinolysis in thrombosis D. They supply fibrin stabilizing factors E. They supply proconvertin for thromboplastin activation

Description : Platelets play an important role in haemostasis; which of the following describes this role? A. They convert fibrinogen to fibrin B. They agglutinate and plug small, ruptured ... thrombosis D. They supply fibrin stabilizing factors E. They supply proconvertin for thromboplastin activation

Last Answer : B. They agglutinate and plug small, ruptured vessels

What is the difference between a hormone and a neurotransmitter?

Description : What is the difference between a hormone and a neurotransmitter?

Last Answer : A: Hormones are chemical messengers that are produced by endocrine glands and are transported through the bloodstream to target cells, while neurotransmitters are chemical messengers that are released by ... at synapses to transmit signals between neurons or from neurons to muscles or glands.

What is the difference between a neurotransmitter and a hormone?

Description : What is the difference between a neurotransmitter and a hormone?

Last Answer : A: A neurotransmitter is a chemical messenger that transmits signals between neurons, while a hormone is a chemical messenger that regulates physiological processes in the body.

What is the difference between a hormone and a neurotransmitter?

Description : What is the difference between a hormone and a neurotransmitter?

Last Answer : A: Hormones are chemical messengers that are produced by glands and travel through the bloodstream to target cells, while neurotransmitters are chemical messengers that are produced by neurons and travel across synapses to target cells.

What is a Neurotransmitter ?

Description : What is a Neurotransmitter ?

Last Answer : Neurotransmitters are neurotransmitters, the chemicals that are secreted from nerve cells and help nerve stimuli to be transported from one neuron to another neuron or to a muscle cell or a gland .

What is a Neurotransmitter ?

Description : What is a Neurotransmitter ?

Last Answer : : Neurotransmitters are the chemicals that are released from the nerve cells and help the nerve stimuli to be transported from one neuron to another neuron or to a muscle cell or a gland.

In which category of muscle fibers, contraction can be regulated by acetylcholine neurotransmitter ?

Description : In which category of muscle fibers, contraction can be regulated by acetylcholine neurotransmitter ?

Last Answer : In which category of muscle fibers, contraction can be regulated by acetylcholine neurotransmitter ? A. ... . Smooth muscle fibers D. all of these

What neurotransmitter controls the somatic nervous system and how does it work?

Description : What neurotransmitter controls the somatic nervous system and how does it work?

Last Answer : Acetylcholine (ACh) is the only neurotransmitter used in themotor division of the somatic nervous system. It works by bindingto acetylcholine receptors on skeletal muscle fibers and openingligand-gated sodium channels in the cell membrane.

The transport of proteins out of the cell is termed exocytosis. Which of the following statement(s) is/are true concerning this process? a. Secretory vesicles fuse with the plasma membrane b. The process can occur in either a constitutive or regulated process c. A regulated secretion is triggered by a stimulus, most likely a hormone or a neurotransmitter d. A decrease in cytoplasmic calcium occurs as part of the secretion process

Description : The transport of proteins out of the cell is termed exocytosis. Which of the following statement(s) is/are true concerning this process? a. Secretory vesicles fuse with the plasma membrane b. ... or a neurotransmitter d. A decrease in cytoplasmic calcium occurs as part of the secretion process

Last Answer : Answer: a, b, c Transport vesicles that bud off the Golgi network carry both material to be secreted from the cell and protein destined to become components of the plasma ... but may also involve generation of diacylglycerol or production of cyclic AMP which activate kinases or phosphatases

The neurotransmitter agent that is normally released in the sinoatrial node of the heart in response to a blood pressure increase is (a) Acetylcholine (b) Dopamine (c) Epinephrine (d) Glutamate (e) Norepinephrine

Description : The neurotransmitter agent that is normally released in the sinoatrial node of the heart in response to a blood pressure increase is (a) Acetylcholine (b) Dopamine (c) Epinephrine (d) Glutamate (e) Norepinephrine

Last Answer : Ans: A

Which neurotransmitter is depleted in Parkinson’s disease?

Description : Which neurotransmitter is depleted in Parkinson’s disease?

Last Answer : Parkinson's disease results from a deficiency of the neurotransmitter dopamine in certain brain neurons that regulate motor activity. Parkinson's disease is characterized by stiff posture, tremors, slowness ... Nerve cells can use levodopa to make dopamine and replenish the brain's dwindling supply.

How are the neurotransmitter molecules inactivated after they are released at a synapse?

Description : How are the neurotransmitter molecules inactivated after they are released at a synapse?

Last Answer : After a chemical neurotransmitter has been released from the synaptic terminal, its action must be terminated in some way. Otherwise, the continued presence of the transmitter in the ... mechanism is used to inactivate Acetylcholine released from the synaptic terminals of the motor neurons.

Prostaglandin is; B A. Neurotransmitter B. Autacoids C. Endocrine hormone D. Steroid hormone

Description : Prostaglandin is;  B A. Neurotransmitter B. Autacoids C. Endocrine hormone D. Steroid hormone

Last Answer : Autacoids

The effect of calcium ions on neurotransmitter release at synapses include: a. vesicular fusion b. tonic depolarization of the presynaptic neurone c. post-tetanic potentiation d. all above

Description : The effect of calcium ions on neurotransmitter release at synapses include: a. vesicular fusion b. tonic depolarization of the presynaptic neurone c. post-tetanic potentiation d. all above

Last Answer : all above

The release of neurotransmitter from synaptic vesicles: a. takes place by exocytosis b. is controlled by neuronal calcium influx c. is quantal d. all above

Description : The release of neurotransmitter from synaptic vesicles: a. takes place by exocytosis b. is controlled by neuronal calcium influx c. is quantal d. all above

Last Answer : all above

Acetylcholine is a neurotransmitter at: a. sweat glands b. the adrenal medulla c. parasympathetic ganglia d. all above

Description : Acetylcholine is a neurotransmitter at: a. sweat glands b. the adrenal medulla c. parasympathetic ganglia d. all above

Last Answer : all above

With regard to the autonomic nervous system: a. the dorsal root ganglia is made up mainly of the cell bodies of the sympathetic nerves b. the preganglionic sympathetic fibres are usually longer than preganglionic parasympathetic fibres c. acetylcholine is the neurotransmitter at the ganglia of both sympathetic and parasympathetic nervous system d. botulin toxin blocks acetylcholine receptors

Description : With regard to the autonomic nervous system: a. the dorsal root ganglia is made up mainly of the cell bodies of the sympathetic nerves b. the preganglionic sympathetic fibres ... the ganglia of both sympathetic and parasympathetic nervous system d. botulin toxin blocks acetylcholine receptors

Last Answer : the dorsal root ganglia is made up mainly of the cell bodies of the sympathetic nerves

Parkinson’s disease (characterized by tremors and progressive rigidity of limbs) is caused by degeneration of brain neurons that are involved in movement control and make use of neurotransmitter (a) acetylcholine (b) norepinephrine (c) dopamine (d) GABA.

Description : Parkinson’s disease (characterized by tremors and progressive rigidity of limbs) is caused by degeneration of brain neurons that are involved in movement control and make use of neurotransmitter (a) acetylcholine (b) norepinephrine (c) dopamine (d) GABA.

Last Answer : c) dopamine

Which one of the following does not act as a neurotransmitter? (a) Cortisone (b) Acetylcholine (c) Epinephrine (d) Norepinephrine

Description : Which one of the following does not act as a neurotransmitter? (a) Cortisone (b) Acetylcholine (c) Epinephrine (d) Norepinephrine

Last Answer : (a) Cortisone

The figure shows an axon terminal and synapse. Select the option giving correct identification of labels A-D. A C D B (a) A-Action potential, C-Neurotransmitter (b) B-Neurotransmitter, D- Receptor capsules (c) C-Receptor, D-Synaptic vesicles (d) A-Axon terminal, B- Serotonin complex

Description : The figure shows an axon terminal and synapse. Select the option giving correct identification of labels A-D. A C D B (a) A-Action potential, C-Neurotransmitter (b) B-Neurotransmitter, D- Receptor capsules (c) C-Receptor, D-Synaptic vesicles (d) A-Axon terminal, B- Serotonin complex

Last Answer : c) C-Receptor, D-Synaptic vesicles

A diagram showing axon terminal and synapse is given. Identify correctly at least two of A - D. (a) A - Neurotransmitter, B - Synaptic cleft (b) C - Neurotransmitter, D - Ca++ (c) A - Receptor, C - Synaptic vesicles (d) B - Synaptic connection, D - K+

Description : A diagram showing axon terminal and synapse is given. Identify correctly at least two of A - D. (a) A - Neurotransmitter, B - Synaptic cleft (b) C - Neurotransmitter, D - Ca++ (c) A - Receptor, C - Synaptic vesicles (d) B - Synaptic connection, D - K+

Last Answer : (c) A - Receptor, C - Synaptic vesicles

The neurotransmitter system in the brain most affected in Alzheimer’s disease is: A. Glutaminergic B. Gabaergic C. Dopaminergic D. Cholinergic

Description : The neurotransmitter system in the brain most affected in Alzheimer’s disease is: A. Glutaminergic B. Gabaergic C. Dopaminergic D. Cholinergic

Last Answer : D. Cholinergic

Explain the left hemisphere area related to language?

Description : Explain the left hemisphere area related to language?

Last Answer : The first language area within the left hemisphere to be discovered is Broca's area, named after Paul Broca, who discovered the area while studying patients with aphasia, a language disorder. Broca's area doesn't ... the difference between "The boy was hit by the girl" and "The girl hit the boy."

Define the treatment of Muscular Dystrophy ?

Description : Define the treatment of Muscular Dystrophy ?

Last Answer : There is no specific treatment to stop or reverse any form of MD. Treatment may include physical therapy, respiratory therapy, speech therapy, orthopedic appliances used for support, and ... may need assisted ventilation to treat respiratory muscle weakness and a pacemaker for cardiac abnormalities.

Which area of the brain is related to language?

Description : Which area of the brain is related to language?

Last Answer : The two hemispheres are thought to contribute to the processing and understanding of language: the left hemisphere processes the linguistic meaning of prosody (or, the rhythm, stress, and intonation ... brains are capable of adapting to difficult circumstances, if the df.mage occurs early enough.

What are the Effects of brain damage?

Description : What are the Effects of brain damage?

Last Answer : A key source of information about the function of brain regions is the effects of damage to them. In humans, strokes have long provided a "natural laboratory" for studying the effects of brain ... often crosses into multiple regions of the brain, not along clear-cut borders, making it difficult to

Write a brief note on MEG?

Description : Write a brief note on MEG?

Last Answer : Apart from measuring the electric field around the skull it is possible to measure the magnetic field directly in a technique known asmagnetoencephalography (MEG). This technique has the same temporal ... dendrites oriented in a way that gives rise to detectable magnetic fields outside the skull.

Write a brief note on EEG?

Description : Write a brief note on EEG?

Last Answer : By placing electrodes on the scalp it is possible to record the summed electrical activity of the cortex, in a technique known aselectroencephalography (FEG). EEG measures mass changes in ... thousandths of a second. EEG recordings have good temporal resolution, but poor spatial resolution.

Explain the Functional divisions of cortex?

Description : Explain the Functional divisions of cortex?

Last Answer : Researchers who study the functions of the cortex divide it into three functional categories of regions, or areas. One consists of the primary sensory areas, which receive signals from the sensory ... and are involved in the complex process that we call perception, thought, and decision making.

Explain the structure of cerebral cortex?

Description : Explain the structure of cerebral cortex?

Last Answer : The cerebral cortex is essentially a sheet of neural tissue, folded in a way that allows a large surface area to fit within the confines of the skull. Each cerebral hemisphere, in fact, has a ... .3 square feet. Anatomists call each cortical fold asulcus, and the smooth area between folds a gyrus.

What is the dominant feature of human brain?

Description : What is the dominant feature of human brain?

Last Answer : The dominant feature of the human brain is corticalization. The cerebral cortex in humans is so large that it overshadows every other part of the brain. A few subcortical structures show alterations reflecting this ... the rat and the cat, to more complex ones, such as the chimpanzee and the human.

Write a short note on the damage and diseases of the brain?

Description : Write a short note on the damage and diseases of the brain?

Last Answer : The human brain is inclined to many types of damage and disease. The most common forms of physical damage are closed head injuries such as a blow to the head, a stroke, or poisoning by ... at least partially by brain dysfunctions, although the nature of such brain anomalies is not well understood.

What are the major tasks of brain?

Description : What are the major tasks of brain?

Last Answer : The brain performs an incredible number of tasks: It controls body temperature, blood pressure, heart rate and breathing. It accepts a flood of information about the world around you from ... skull, suspended in cerebrospinal fluid, and isolated from the bloodstream by the blood-brain barrier.

Write the names of Cerebral Cortex Lobes?

Description : Write the names of Cerebral Cortex Lobes?

Last Answer : •Frontal Lobes • Occipital Lobes •Parietal Lobes • Temporal Lobes

What is Cerebral Cortex?

Description : What is Cerebral Cortex?

Last Answer : •Outer portion (1.5mm to 5mm) of the cerebrum •Receives and processes sensory information •Divided into cerebral cortex lobes

What is Cerebellum?

Description : What is Cerebellum?

Last Answer : •Controls movement coordination •Maintains balance and equilibrium

What is Central Sulcus (Fissure of Rolando)?

Description : What is Central Sulcus (Fissure of Rolando)?

Last Answer : Central sulcus is a Deep grove that separates the parietal and frontal lobes

Explain the Broca's Area?

Description : Explain the Broca's Area?

Last Answer : Broca's area is related to Speech production and Understanding language