HHB 3.4 Nervous System & Neurotransmitters Quizs

Process by which neurotransmitters cross the synaptic cleft

• osmosis
• active transport
• diffusion
• summation

In a neural pathway, what term is used to describe muscle and glands?

• receptor
• effectors
• stimulus
• neurotransmitters

In a neuron which structures contain the neurotransmitters?

• ribosomes
• mitochondria
• vesicles
• nucleus

In a neuron which structures receive electrical impulses from other neurons?

• axon

• cell body

• dendrites

• myelin sheath

Neurotransmitters are removed from the synaptic cleft by which processes?

• summation and enzyme degradation
• reuptake and enzyme synthesis
• reuptake and enzyme degradation
• enzyme inhibition and reuptake

The term for the minimum number of neurotransmitters which must bind to receptors to cause an impulse

• threshold
• summation
• excitatory
• inhibitory

In a neuron, which structure increases the speed of impulse conduction?

• axon

• myelin sheath

• dendrite

• glial cell

Which substances diffuse across the synaptic cleft and bind to receptors on the membrane of the postsynaptic neuron?

• neurotransmitters

• vesicles

• enzymes

• antibodies

Name given to the gap between neurons

• vesicle
• receptor
• neurotransmitter
• synaptic cleft

The term for the combining of a series of weak stimuli which triggers an impulse

• threshold
• summation
• excitatory
• inhibitory