Neurons

Question 1

what are neurons

Answer 1

nerve cells that transport chemical and electrical signals from around the body and form a massive communication system

Question 2

what are the 3 types of neurons

Answer 2

senosry, relay and motor

Question 3

what do neurons form/build up

Answer 3

the nervous systems

Question 4

what are sensory neurons

Answer 4

neurons that carry nerve impulses to the spinal cord and brain

Question 5

where are sensory neurons found

Answer 5

in receptor cells such as eyes and skin

Question 6

what are the nerve impulses translated to in the sensory neurons

Answer 6

sensations such as vision and touch

Question 7

what happens to the sensory neurons which allows for quick reflex actions

Answer 7

not all sensory neurons reach the brain as some stop at the spinal cord

Question 8

what is the role of the relay neuron

Answer 8

allow communication between the sensory and motor neurons

Question 9

where are the relay neurons found

Answer 9

in between the sensory input and motor output, which is in the brain and spinal cord

Question 10

what are motor neurons

Answer 10

controls muscle movements

Question 11

where is the motor neuron located

Answer 11

in the CNS

Question 12

what happens when the motor neurons are stimulated

Answer 12

they release neurotransmitters that bind to the receptors on muscles to trigger a response

Question 14

what is the role of all the neurons to work together

Answer 14

to create a response from a stimuli

Question 15

give an example of a stimuli

Answer 15

a fly ticking your arm (other appropriate answers can work too)

Question 16

what happens when the stimuli come in contact with you

Answer 16

your receptor passes sesnsory info from our somatic NS to the CNS

Question 17

what happens when the CNS recieves the info from the somatic somatic NS

Answer 17

our CNS sends relay reurons to pass on the message to the motor neurons

Question 18

what happens onces the motor neuron receives the message from the relay neurons

Answer 18

they transmit electrica impulses from our somatic NS to our effectors

Question 19

what are effectors

Answer 19

muscle or glands that produce a response

Question 20

give an example of a response

Answer 20

brushing your skin after fly tickled you (other appropriate answers can work too)

Question 21

what are the parts of a neuron we need to know

Answer 21

soma (cell body), nucleus, dendrite, axon, myeline sheath, node of ranvier and axon terminal

Question 22

what is a soma

Answer 22

its the main cell body which contains a nucleus

Question 23

what is the nucleus

Answer 23

holds genetic information of the cell

Question 24

where is the nucleus located

Answer 24

soma (cell body)

Question 25

what are dendrites

Answer 25

receive signals from other neurons or sensory receptor cells.

Question 26

where are dendrites typically found

Answer 26

The dendrites are typically connected to the cell body

Question 27

what is an axon

Answer 27

a long slender fibre that carries nerve impulses in the form of an electrical signal known as action potential

Question 28

what is action potential

Answer 28

when nerve impulses are carriedin the form of electrical signals

Question 29

what are Nodes of Ranvier

Answer 29

they are gaps in the axon and the speed up transmission by forcing a jump across the axon

Question 30

what is the myelin sheath

Answer 30

it insulates the axon so that the electrical impulses travel faster along the axon

Question 31

where is the myelin sheath found

Answer 31

surrounding the axon of the neurons

Question 32

what are axon terminals

Answer 32

transmitters that connect the neurons to the other neurons or to organs through a process called synaptic transmission

Question 33

what process do axon terminals use

Answer 33

synaptic transmission

Question 34

how is an electrical impulse created

Answer 34

by the neurons inside of the cell becoming positively charged for a split second causing action potential to occur

Question 35

when is the neuron negatively charged

Answer 35

when in a resting state inside the cell

Question 36

when is the neuron positively charged

Answer 36

when the neuron is activated

Question 37

how does the electrical impulse travel along the neuron

Answer 37

ravels down the axon toward the end of the neuron