neurotransmission speeds

Question 1

what are the structures and adaptations of a motor neuron?

Answer 1

soma-cell body where the nucleus lies and controls the cells and where proteins are produced for maintaining neuron function
dendrites - branch-like structures found at the end of neurons to send and receive information from other neurons
axon - a long structure from the soma which allows for the transmission of information down its body to the dendrites at the end of the neuron

Question 2

adaptations of relay neuron

Answer 2

• long fibre (axon) to carry messages up and down the body over long distances
• fatty sheath to speed up nerve impulses along neuron

Question 3

what is a synapse?

Answer 3

a synapse is the space between the end of a nerve cell and another cell

Question 4

the function of the synapse

Answer 4

the synapse connects neurons and help transmit information from one neuron to the next

Question 5

how does the structure of a reflex arc allow for faster responses?

Answer 5

they involve fewer pathways of travel and information from a reflex that does not need to travel to the brain

Question 6

what is the structure and function of a reflex arc?

Answer 6

contains a receptor, an interneuron and an effector. sensory cells carry input from the receptor to a central interneuron which makes contact with a motor neuron