What is Axon?

What is Axon?
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1 Answer

Answer :

A long projection of the cell body that conducts messages away from the cell body is called axon.
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Related questions

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. 

Define diabetes

Description : Define diabetes 

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

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

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.

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.

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 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 Nerve impulses

Description : Define Nerve impulses

Last Answer : Neurons carry messages in the form of electro-chemical waves called nerve impulses.

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.

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.

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.

Label te parts in the given diagram of axon terminal and synapse

Description : Label te parts in the given diagram of axon terminal and synapse

Last Answer : Label te parts in the given diagram of axon terminal and synapse

Cells which envelop nerve fibres and form myelin sheath around the axon are

Description : Cells which envelop nerve fibres and form myelin sheath around the axon are

Last Answer : Cells which envelop nerve fibres and form myelin sheath around the axon are

Type of synapse in which transmission of impulse across neuron is similar to conduction along a single axon

Description : Type of synapse in which transmission of impulse across neuron is similar to conduction along a single axon

Last Answer : Type of synapse in which transmission of impulse across neuron is similar to conduction along a single axon

Label te parts in the given diagram of axon terminal and synapse

Description : Label te parts in the given diagram of axon terminal and synapse

Last Answer : Label te parts in the given diagram of axon terminal and synapse

Cells which envelop nerve fibres and form myelin sheath around the axon are

Description : Cells which envelop nerve fibres and form myelin sheath around the axon are

Last Answer : Cells which envelop nerve fibres and form myelin sheath around the axon are

Type of synapse in which transmission of impulse across neuron is similar to conduction along a single axon

Description : Type of synapse in which transmission of impulse across neuron is similar to conduction along a single axon

Last Answer : Type of synapse in which transmission of impulse across neuron is similar to conduction along a single axon

What is the functions of the neuron's axon?

Description : What is the functions of the neuron's axon?

Last Answer : the function of the neuron's axon is to carry messages to othercells

When an impulse reach the end of the axon the axon releases?

Description : When an impulse reach the end of the axon the axon releases?

Last Answer : Neurotransmitters to the synapse and the neurotransmitters bindwith the receptors releasing the second messengers.

What is the functions of the neuron's axon?

Description : What is the functions of the neuron's axon?

Last Answer : the function of the neuron's axon is to carry messages to othercells

At rest, the interior of the typical mammalian neuronal axon potential is approximately ________ mV (a) 0 (b) –70 (c) –100 (d) –20

Description : At rest, the interior of the typical mammalian neuronal axon potential is approximately ________ mV (a) 0 (b) –70 (c) –100 (d) –20

Last Answer : Ans: B

The synaptic knobs represent the terminal endings of (a) the neuron (b) the dendron (c) the axon (d) the telodendria

Description : The synaptic knobs represent the terminal endings of (a) the neuron (b) the dendron (c) the axon (d) the telodendria

Last Answer : Ans:(d)

When the electric impulse travels along the axon and reaches the other end called the synaptic terminal, this impulse triggers the release of – (1) Vesicles (2) Cleft (3) Mitochondria (4) All of the above

Description : When the electric impulse travels along the axon and reaches the other end called the synaptic terminal, this impulse triggers the release of – (1) Vesicles (2) Cleft (3) Mitochondria (4) All of the above

Last Answer : (1) Vesicles Explanation: The electrical impulses stimulate the release of vesicles. These store various neurotransmitters that are released at the synapse. Vesicles are essential for propagating nerve impulses between neurons and are constantly recreated by the cell.

The filtration unit of kidney is - (1) axon (2) nephron (3) neuron (4) yellow fiber

Description : The filtration unit of kidney is - (1) axon (2) nephron (3) neuron (4) yellow fiber

Last Answer : (2) nephron Explanation: Nephron is the basic structural and functional unit of the kidney. Its chief function is to regulate the concentration of water and soluble substances like sodium salts by filtering the blood, reabsorbing what is needed and excreting the rest as urine.

(4) Fundamental unit of nervous system Explanation: A neuron is a cell that carries electrical impulses. Neurons are the basic units of the nervous system and its most important part is the brain. Every neuron is made of a cell body (also called a soma), dendrites and an axon.

Description : (4) Fundamental unit of nervous system Explanation: A neuron is a cell that carries electrical impulses. Neurons are the basic units of the nervous system and its most important part is the brain. Every neuron is made of a cell body (also called a soma), dendrites and an axon.

Last Answer : Water cycle refers to - (1) an integrated attempt to recycle water in relatively arid regions (2) constant movement of water from ocean to land and back to ocean once again (3) ... management of water in areas excessively plagued with water-logging (4) water distribution in relatively dry area

The axon is covered by a fatty sheath called

Description : The axon is covered by a fatty sheath called

Last Answer : Myelin Sheath.

The axon ends in a bunch of branches called

Description : The axon ends in a bunch of branches called

Last Answer : telodendrons.

What is axon?

Description : What is axon?

Last Answer : An axon is a single long, cylindrical fibre extending from a cell body

The conduction velocity of the nerve fibres is increased by: a. decreased temperature b. increased concentration of the external sodium ions e. increased axon diameter d. myelination

Description : The conduction velocity of the nerve fibres is increased by: a. decreased temperature b. increased concentration of the external sodium ions e. increased axon diameter d. myelination

Last Answer : myelination

A squid axon is placed on stimulating electrodes, and an intracellular electrode is inserted and connected through a cathode-ray oscilloscope (CRO) to an indifferent electrode. When the axon is stimulated, the latent period is 1.5 ms. The intracellular electrode is 6 cm form the anode of the simulator and 4.5 cm from the cathode of the simulator. What is the conduction velocity of the axon. a. 15 m/s b. 30 m/s c. 40 m/s d. 67.5 m/s e. This cannot be determined from the information given

Description : A squid axon is placed on stimulating electrodes, and an intracellular electrode is inserted and connected through a cathode-ray oscilloscope (CRO) to an indifferent electrode. When the axon is stimulated, the latent ... . 40 m/s d. 67.5 m/s e. This cannot be determined from the information given

Last Answer : 30 m/s

The action potential of a neuron a. is initiated by efflux of Na+ b. is terminated by efflux of K+ c. declines in amplitude as it moves along the axon d. results in a transient reversal of the concentration gradient of Na+ across the cell membrane e. is not associated with any net movement of Na+ or K+ across the cell membrane

Description : The action potential of a neuron a. is initiated by efflux of Na+ b. is terminated by efflux of K+ c. declines in amplitude as it moves along the axon d. results in a transient reversal of the ... the cell membrane e. is not associated with any net movement of Na+ or K+ across the cell membrane

Last Answer : is terminated by efflux of K+

Each preganglionic axon braches and can therefore synapse, with as many as a. 4 neurons b. 6 neurons c. 8 neurons d. 10 neurons

Description : Each preganglionic axon braches and can therefore synapse, with as many as a. 4 neurons b. 6 neurons c. 8 neurons d. 10 neurons

Last Answer : 10 neurons

The fundamental structural and functional unit of nerves system is a. axon b. dendrite c. cell body d. neuron

Description : The fundamental structural and functional unit of nerves system is a. axon b. dendrite c. cell body d. neuron

Last Answer : neuron

Which of the following statements is not correct? (a) An action potential in an axon does not move backward because the segment behind is in a refractory phase. (b) Depolarisation of hair cells of cochlea results in the opening of the mechanically gated potassium-ion channels. (c) Rods are very sensitive and contribute to daylight vision. (d) In the knee-jerk reflex, stimulus is the stretching of muscle and response is its contraction.

Description : Which of the following statements is not correct? (a) An action potential in an axon does not move backward because the segment behind is in a refractory phase. (b) Depolarisation of hair cells ... d) In the knee-jerk reflex, stimulus is the stretching of muscle and response is its contraction.

Last Answer : (c) Rods are very sensitive and contribute to daylight vision.

The junction between the axon of one neuron and the dendrite of the next is called (a) constant bridge (b) junction point (c) a joint (d) a synapse.

Description : The junction between the axon of one neuron and the dendrite of the next is called (a) constant bridge (b) junction point (c) a joint (d) a synapse.

Last Answer : d) a synapse.