neuron and neural transmission

Question 1

synapse

Answer 1

the space that occurs between 2 neurons or a neuron and another type of cell

Question 2

describe the process of neural transmission

Answer 2

• signals are perceived by the dendrites
• transmitted from cell body/soma to axon
• neurotransmitters travel in vesicles through the axons
• enzymes break the vesicle at the axon terminals to send signals across synapse.
  -to receptors on dendrites post synaptic neuron.
• any left over neurotransmitters go through the re-uptake process

Question 3

neurotransmitters

Answer 3

molecules used by the nervous system to transmit messages between neuron’s or neuron’s to molecules

Question 4

dopamine

Answer 4

makes people talkative and more excitable which leaves them wanting more

eg. an alcoholic when he sees a bar

Question 5

neurons

Answer 5

are the information processing units of the brain responsible for receiving and transmitting information.

Question 6

axon terminals

Answer 6

located at the end of the neuron and are responsible for sending signals to the other neurons

Question 7

myelin sheaths

Answer 7

fatty lipids and proteins that covers and protects the nerves

Question 8

how do nerves connect with each other

Answer 8

they connect through the electrical signals carried by neurons are passed on to the other neurons at junction called synapses

Question 9

dendrites

Answer 9

are extensions at the beginning of a neuron that helps increase the surface area of the cell body

Question 10

soma (cell body)

Answer 10

is where the signals from the dendrites are joined and passed on

Question 11

serotonin

Answer 11

allows us to be happy and content

Question 12

axon

Answer 12

a fibre that extends from the cell body to the terminal endings and transmits the neural signals

most neurons only have 1 axon

Question 13

nodes of ranvier

Answer 13

gaps in the myelin sheath

Question 14

describe the process of re-up take

Answer 14

neurotransmitters are absorbed back into a transmitting neuron (brain cell) after being released into the synapse

Question 15

electro-chemical signals

Answer 15

once a neuron sends some sort stimulus generates electric potential (action) that travels down the length of the cell

Question 16

why is neurotransmission considered an electrochemical signal?

Answer 16

because it involves both an electrical impulse travelling along the neurons axon, and the release of chemical neurotransmitters across the synapse