Define Nerve impulses

Define Nerve impulses
by

1 Answer

Answer :

Neurons carry messages in the form of electro-chemical waves called nerve impulses.
by

Related questions

Define Nerve.

Description : Define Nerve.

Last Answer : It is an enclosed, cable like bundle of axons present side by side in a common sheath. Nerve conveys messages carried by the individual neurons from one body part to another.

Define Neuron or Nerve Cell.

Description : Define Neuron or Nerve Cell.

Last Answer : Neuron or nerve cell is the basic structure and functional unit of the nervous system. All parts of the nervous system are made up of neurons.

Define diabetes

Description : Define diabetes 

Last Answer : Diabetes mellitus is disease in which sugar level increases in the blood.

Define Reflex arc.

Description : Define Reflex arc. 

Last Answer : The inter neuron transmit the impulse to motor neuron. They carried the impulse to muscles. The pathway of nerve impulse that complete a reflex action is called reflex arc. It consists of receptor, a sensory neuron, an inter neuron, a motor neuron and effectors.

Define reflex action.

Description : Define reflex action.

Last Answer : An immediate and involuntary response to a stimulus is called reflex action. Quick pulling of hand just after touching the hot object is a common example of reflex action. Explanation When we touch ... arc. It consists of receptor, a sensory neuron, an inter neuron, a motor neuron and effectors.

Define Dendrites.

Description : Define Dendrites.

Last Answer : A fine projection of the cell body that receives messages is called dendrites.

Define cell body.

Description : Define cell body.

Last Answer : The part of neuron containing nucleus and most of the cytoplasm is called cell body.

Define nervous system

Description : Define nervous system

Last Answer : The organ system in our body that carries messages from one part of the body to another part and coordinates body functions is called nervous system.

How stones are formed in the kidney and how can these be removed?

Description : How stones are formed in the kidney and how can these be removed?

Last Answer : Sometimes kidneys cannot work properly to remove salt from blood. In such situation, the salts gather in kidneys and form stones. Stones can be removed in three ways I. By drinking water II. Lithotripsy III. shockwaves

Name any two waste materials produced by the human body

Description : Name any two waste materials produced by the human body

Last Answer : 1: Urine 2: Feces

What is kidney transplant?

Description : What is kidney transplant?

Last Answer : In this method a kidney donated by some healthy person is grafted in the body of the patient. The donar of kidney may be blood relative or any other close relative.

What is dialyzer?

Description : What is dialyzer?

Last Answer : Clearing of blood by artificial methods is called dialysis. It is done by a machine called dialyzer.

What is Hypertension?

Description : What is Hypertension?

Last Answer : It is a state of high blood pressure in the body. 

What is renal failure?

Description : What is renal failure?

Last Answer : It is a complete or partial failure of kidneys to work. The main cause of renal failure are I. long term infection II. Diabetes mellitus III. Hypertension

Describe structure of nephron

Description : Describe structure of nephron

Last Answer : It is the functional unit of kidneys. It consists of two main parts I. Renal corpuscle II. Renal tubule These are the tubules where urine is formed. There are over one million ... and is called Loop of Henle. The last part of the renal tubule is again coiled called distal tubule.

Write a note on internal structure of kidneys

Description : Write a note on internal structure of kidneys

Last Answer : Each kidney is divided into three regions 1. Renal cortex It is the outer most region of kidney 2. Renal medulla and renal pyramids Renal medulla is the middle regions which is divided into conical ... It is the inner area where urine is drained. The urine from renal pelvis moves into ureter.

Describe the main parts of excretory system in man.

Description : Describe the main parts of excretory system in man.

Last Answer : It consists of one pair of kidneys and associated structure. i.e. two ureter, a urinary bladder and urethra. 1. Kidneys Human body has two dark brown bean shaped kidneys in the abdominal ... A fine tube through which urine is released from urinary bladder to the outside is called urethra.

Describe peripheral nervous system (PNS).

Description : Describe peripheral nervous system (PNS).

Last Answer : PNS includes a network of nerves connecting the central system to whole body. The nerves which arise from brain are called cranial nerves. The nerves which arise from spinal cord are called spinal nerves. There are 12 pairs of cranial nerves and 31 pairs of spinal nerves in human body.

Explain central nervous system.

Description : Explain central nervous system.

Last Answer : CNS acts as a control Centre of the whole nervous system. It contains brain and spinal cord. Brain Human brain is enclosed in a bony skull called cranium. It divided into following ... between brain and different body parts. It also controls some reflex actions and some other involuntary actions.

Skin is considered as excretory organ. Why?

Description : Skin is considered as excretory organ. Why?

Last Answer : Because some extra salts are also removed through skin during perspiration.

Write the function of the followings 1. Forebrain 2. Hindbrain

Description : Write the function of the followings 1. Forebrain 2. Hindbrain

Last Answer : 1. Forebrain It is the largest part of the brain. It consists of three main parts I. Cerebrum II. Thalamus III. Hypothalamus Cerebrum is the topmost and the largest part of ... These are the tubules where urine is formed. There are over one million nephrons in each kidney. 

Write the names of main parts of the followings 1. Forebrain 2. Hindbrain

Description : Write the names of main parts of the followings 1. Forebrain 2. Hindbrain

Last Answer : 1. Forebrain It consists of three main parts I. Cerebrum II. Thalamus III. Hypothalamus 2. Hindbrain It consists of three main parts I. Cerebellum II. Pons III. Medulla oblongata 3. Neuron It ... Dendrites III. Axon 4. Nephron It consists of two main parts I. Renal corpuscle II. Renal tubule

How many types of neurons are there?

Description : How many types of neurons are there?

Last Answer : There are three types of neurons on the basis of functions. I. Sensory neurons II. Motor neurons III. Inter neurons 1. Sensory neurons It carries nerve impulses from sense organs (ears, eyes, skin, ... . 3. Inter neurons These are present in CNS. They form a link between sensory and motor neurons.

What is Axon?

Description : What is Axon?

Last Answer : A long projection of the cell body that conducts messages away from the cell body is called axon.

What is PNS?

Description : What is PNS?

Last Answer : PNS means peripheral nervous system that includes a network of nerves connecting the central system to whole body.

What is CNS?

Description : What is CNS?

Last Answer : CNS means central nervous system that includes brain and spinal cord.

If we were to get rid of the hormones within us and electrical nerve impulses of the brain, we would pretty much achieve zombie state, am I right?

Description : If we were to get rid of the hormones within us and electrical nerve impulses of the brain, we would pretty much achieve zombie state, am I right?

Last Answer : Aren’t Zombies dead humans? We’d have to die first, no? Anyway, if we achieved zombie status, we wouldn’t know we’re in paradise so I vote no.

Chemicals by which nerve impulses transmit through one neuron by another are

Description : Chemicals by which nerve impulses transmit through one neuron by another are

Last Answer : Chemicals by which nerve impulses transmit through one neuron by another are

Chemicals by which nerve impulses transmit through one neuron by another are

Description : Chemicals by which nerve impulses transmit through one neuron by another are

Last Answer : Chemicals by which nerve impulses transmit through one neuron by another are

Assertion : The contraction and relaxation of muscle fiber are controlled by nerve impulses. Reason : The threshold stimulus is the minimum stimulus r

Description : Assertion : The contraction and relaxation of muscle fiber are controlled by nerve impulses. Reason : The threshold stimulus is the minimum stimulus r

Last Answer : Assertion : The contraction and relaxation of muscle fiber are controlled by nerve impulses. Reason : ... D. If both Assertion and Reason are false.

Do myelin sheaths slow down or speed up nerve impulses?

Description : Do myelin sheaths slow down or speed up nerve impulses?

Last Answer : What is the answer ?

Can a nerve fibre and nerve both carry sensory and motor impulses?

Description : Can a nerve fibre and nerve both carry sensory and motor impulses?

Last Answer : There are the Mixed Nerves in the spinal column that carry bothsensory and motor nerves, but these neurons have 2 different jobsthat they do,& I know of no neurons doing both as the impulsestravel to 2 different locations which couldn't be done at the sametime.

What is the nerve carrying impulses from the eye to the thalamus?

Description : What is the nerve carrying impulses from the eye to the thalamus?

Last Answer : The optic nerves carry the impulses from the eyes to the visual area of the thalamus.

What part of the neuron carries nerve impulses away from the cell body?

Description : What part of the neuron carries nerve impulses away from the cell body?

Last Answer : AXON – A Long Fibre that CARRIES IMPULSES AWAY FROM THE CELL BODY. Each neuron has only ONE AXON. The Axon Ends in a series of small swellings called AXON TERMINALS.

Local anesthetics: A. Inhibit transmission of nerve impulses by increasing sodium membrane permeability and the displacement of ionized calcium. B. Are classified as amides or esters. C. Produce peripheral vasodilation. D. Are weak acids.

Description : Local anesthetics: A. Inhibit transmission of nerve impulses by increasing sodium membrane permeability and the displacement of ionized calcium. B. Are classified as amides or esters. C. Produce peripheral vasodilation. D. Are weak acids.

Last Answer : Answer: BC DISCUSSION: Local anesthetics act within the nerve membrane, where they inhibit transmission of nerve impulses by reducing sodium membrane permeability and the displacement of ionized ... based on this bond. All local anesthetics except cocaine produce vasodilatation and are weak bases

The nerve that carries the impulses from the sense organs to the central nervous sys- tem?

Description : The nerve that carries the impulses from the sense organs to the central nervous sys- tem?

Last Answer : Sensory nerve

Which nerve carries impulses from the eye to the brain?

Description : Which nerve carries impulses from the eye to the brain?

Last Answer : The optic nerve

Compared with myelinated nerve fibres, non-myelinated nerve fibres : a. have a higher threshold for stimulation b. have a longer refractory period c. transmit impulses at a lower frequency d. all above

Description : Compared with myelinated nerve fibres, non-myelinated nerve fibres : a. have a higher threshold for stimulation b. have a longer refractory period c. transmit impulses at a lower frequency d. all above

Last Answer : all above

Stretch reflex: a. is a monosynaptic reflex with a response time of 1 msec b. originates in the muscle spindle which sends off impulses in type Ia nerve fibres c. is intensified by impulses in the gamma efferent fibres d. all above

Description : Stretch reflex: a. is a monosynaptic reflex with a response time of 1 msec b. originates in the muscle spindle which sends off impulses in type Ia nerve fibres c. is intensified by impulses in the gamma efferent fibres d. all above

Last Answer : all above

Afferent nerve fibres carry impulses from (a) effector organs to CNS(b) receptors to CNS (c) CNS to receptors (d) CNS to muscles.

Description : Afferent nerve fibres carry impulses from (a) effector organs to CNS (b) receptors to CNS (c) CNS to receptors (d) CNS to muscles.

Last Answer : (b) receptors to CNS

Which element is essentials for the transmission of impulses in the nerve fibre?

Description : Which element is essentials for the transmission of impulses in the nerve fibre?

Last Answer : Calcium

Which is an example of negative feedback? A) Nursing action stimulates the hypothalamus to release oxytocin that triggers mammary gland milk production. B) When the blood becomes dilute, ADH is no longer released from the hypothalamus. C) Uterine stretching sends nerve impulses to the hypothalamus that releases oxytocin that triggers uterine contraction. D) FSH and LH stimulate the gonads to produce sperm or eggs. E) TRH stimulates the anterior pituitary to release thyroid-stimulating hormone.

Description : Which is an example of negative feedback? A) Nursing action stimulates the hypothalamus to release oxytocin that triggers mammary gland milk production. B) When the blood becomes dilute, ADH ... produce sperm or eggs. E) TRH stimulates the anterior pituitary to release thyroid-stimulating hormone.

Last Answer : B) When the blood becomes dilute, ADH is no longer released from the hypothalamus

What do you think about following your impulses?

Description : What do you think about following your impulses?

Last Answer : I turn em loose. Screw it.

If you were to give into your naughty impulses, what would you do?

Description : If you were to give into your naughty impulses, what would you do?

Last Answer : I would tell my son and his wife exactly what I think.

Assertion `:` Though AV node generates impulses, it is still not called as the pacemaker of heart. Reason `:` The rythmicity of impulse production is

Description : Assertion `:` Though AV node generates impulses, it is still not called as the pacemaker of heart. Reason `:` The rythmicity of impulse production is

Last Answer : Assertion `:` Though AV node generates impulses, it is still not called as the pacemaker of heart. ... . D. If both Assertion & Reason are false.

Choose the correct pathway of the transmission of impulses in the heart beat `:`

Description : Choose the correct pathway of the transmission of impulses in the heart beat `:`

Last Answer : Choose the correct pathway of the transmission of impulses in the heart beat `:` A. Av node `rarr` ... of His `rarr ` SA node `rarr ` Purkinje fibres

Prosthesis that is designed to generate repetitive electrical impulses to the heart, is known as

Description : Prosthesis that is designed to generate repetitive electrical impulses to the heart, is known as

Last Answer : Prosthesis that is designed to generate repetitive electrical impulses to the heart, is known as A. ... -aortic balloon pump D. Heart- lung machine

Branch of PNS which transmit impulses from CNS to involuntary organ and classified into sympathetic & parasympathetic neural system is

Description : Branch of PNS which transmit impulses from CNS to involuntary organ and classified into sympathetic & parasympathetic neural system is

Last Answer : Branch of PNS which transmit impulses from CNS to involuntary organ and classified into sympathetic & parasympathetic neural system is

Neural system which relays impulses from CNS to skeletal muscles is

Description : Neural system which relays impulses from CNS to skeletal muscles is

Last Answer : Neural system which relays impulses from CNS to skeletal muscles is

Part of PNS which transmit impulses from CNS to involuntary organ and classified into sympathetic & parasympathetic neural system is

Description : Part of PNS which transmit impulses from CNS to involuntary organ and classified into sympathetic & parasympathetic neural system is

Last Answer : Part of PNS which transmit impulses from CNS to involuntary organ and classified into sympathetic & parasympathetic neural system is