Anatomy Unit 5 Ch 9 Nervous System Test

What is the primary function of neurons in the nervous system?

• To provide insulation and nutrients

• To carry impulses and respond to changes

• To store energy

• To produce hormones

Which part of the neuron is responsible for sending information away from the cell body?

• Dendrites

• Cell body

• Axons

• Neuroglia

Which molecules convey neural information across synapses?

• Hormones

• Enzymes

• Neurotransmitters

• Proteins

What are the two major subdivisions of the nervous system?

• Central and Peripheral

• Sympathetic and Parasympathetic

• Autonomic and Somatic

• Sensory and Motor

What is the role of effectors in the nervous system?

• To transmit signals to the brain

• To convert environmental information into impulses

• To respond to impulses from the nervous system

• To store and retrieve memories

Which type of neuroglia forms insulating layers of myelin?

• Microglial cells

• Astrocytes

• Oligodendrocytes

• Ependymal cells

What are the nodes of Ranvier?

• Gaps in the myelin sheath

• Types of neurotransmitters

• Parts of the neuron cell body

• Types of dendrites

What is a characteristic of multipolar neurons?

• They have two processes

• They have many processes arising from their cell bodies

• They have no processes

• They are only found in the peripheral nervous system

What is the role of the myelin sheath in a neuron?

• To slow down nerve impulse transmission

• To protect the nucleus

• To speed up nerve impulse transmission

• To produce neurotransmitters

Where are the Nodes of Ranvier located in a neuron?

• Between the dendrites

• Along the axon between myelin sheath segments

• Inside the cell body

• At the synaptic knob