A&P Nervous System Chp 9- Part 1 Review

What are the 2 major divisions of the peripheral nervous system (PNS)?

• Sensory & Motor
• Peripheral & Central
• Somatic & Autonomic
• Brain & Spinal Cord

What is the purpose of the myelin sheath on the axon?

• To maintain temperature
• To improve conductivity
• To protect the axon
• To release neurotransmitters

a signal molecule that transmits nerve impulses across synapses

• neuron
• neurotransmitter
• nerve
• action potential

Match the following

• Neurotransmitter

• Connective tissue that provides protection, support, insulation, and nutrients for neurons

• Neuroglia

• biological messenger molecule

• Neuron

• signal conducted by a neuron

• Impulse

• Nerve Cell

What is the function of myelin on an axon

• To provide nutrients to the axon
• To protect the axon from physical damage and slow down the signal

• To facilitate the growth of new neurons and speed up the transmission

• To insulate and increase the speed of electrical signal transmission.

Match the following

• nerve cell bodies linked by synapes

• Sensory Neuron

• entirely within the brain or spinal cord

• Nissi Bodies

• contains usual orangelles

• Cell Body/ Soma

• contains rough ER and free ribosomes

• Interneuron

• conduct impulses from PNS to CNS

• Ganglia

Match the following

• independent without conscious effort

• Effectors

• brain and spinal cord

• Somatic Nervous System

• motor functions under voluntary control

• Central Nervous System

• responsive structures of CNS

• Autonomic Nervous System

• connect CNS to other body parts

• Peripheral Nervous System

Tags

NGSS.HS-LS1-3

• Nucleus

• Cell Body

• Axon

• Node of Ranvier

Tags

NGSS.MS-LS1-2

• Nucleus

• Cell Body

• Axon

• Node of Ranvier

Tags

NGSS.MS-LS1-2

• Nucleus

• Cell Body

• Axon

• Node of Ranvier