The Nervous System

What is the primary role of the nervous system?

• Regulate blood sugar levels

• Control voluntary and involuntary actions to respond to info inside and outside the body. Helps maintain homeostasis

• Produce and release hormones

• Exchange gases in the lungs

What is the relationship between stimulus and response in the nervous system?

• Stimulus is the response generated by the nervous system

• Response is the sensation experienced due to external stimuli

• Stimulus is the change detected by sensory receptors, and response is the reaction generated by the nervous system

• Response is the change detected by sensory receptors, and stimulus is the reaction generated by the nervous system

How does the nervous system contribute to maintaining homeostasis in the body?

• By producing and releasing hormones

• By regulating blood sugar levels

• By coordinating responses to internal and external stimuli

• By controlling voluntary muscle movements

Neurons structure allows it to carry nerve impulses. Where do the nerve impulses begin

• Dendrites

• Cell body

• Nucleus

• Axon

The neuron can have many dendrites, how many axons can it have?

• 1

• 3

• infinite

Axon sends impulses away from cell body to ------

• axon tips

• nucelus

• dendtrites

• Myelin

Your body has which three kinds of neurons

• Sensory, motor, and interneuron

• sensoryCentral, peripheral, and autonomic neurons

• Afferent, efferent, and somatic neurons

• Receptor, effector, and relay neurons

What is the correct path of a nerve impulse?

• Dendrite → Cell Body → Axon → Synapse

• Axon → Synapse → Dendrite → Cell Body

• Cell Body → Synapse → Axon → Dendrite

• Synapse → Axon → Cell Body → Dendrite

What is the primary function of a sensory neuron?

• Transmit signals from the brain to muscles and glands

• Integrate and process sensory information

• Detect stimuli from the environment or within the body

• Control involuntary processes such as heart rate

What happens at the Synapse

• Chemical signals change to electric form allowing impulse to transfer to another structure

• Electric signals change to chemical form allowing impulse to transfer to another structure

• Impulse is lost as electric signals turn to chemical signals