Nervous System: The synapse, reflexes, spinal cord, & brain

What is the primary function of a synapse in the nervous system?

• To transmit electrical signals directly between neurons

• To facilitate communication between neurons through chemical signals

• To store neurotransmitters

• To insulate axons

Which neurotransmitter is commonly associated with the synapse in the neuromuscular junction?

• Dopamine

• Serotonin

• Acetylcholine

• GABA

Describe the role of the myelin sheath in the spinal cord.

• It produces neurotransmitters

• It speeds up the transmission of nerve impulses

• It stores calcium ions

• It connects neurons to blood vessels

Explain how a reflex arc functions in response to touching a hot surface.

• The brain processes the information and sends a signal to the muscles

• The spinal cord processes the information and sends a signal to the muscles

• The sensory neurons directly activate the muscles

• The reflex arc does not involve the spinal cord

Identify the main regions of the spinal cord.

• Cervical, thoracic, lumbar, sacral

• Frontal, parietal, occipital, temporal

• Dorsal, ventral, lateral, medial

• Anterior, posterior, superior, inferior

What is the function of Wernicke's area in the brain?

• Verbal communication

• Visual processing

• Language processing

• Body movement

Compare the roles of sensory and motor neurons in a reflex arc.

• Both transmit signals to the brain

• Sensory neurons carry signals to the spinal cord, while motor neurons carry signals from the spinal cord to muscles

• Both are involved in voluntary actions

• Sensory neurons are faster than motor neurons

Tags

NGSS.MS-LS1-8

What are the 4 lobes of the cerebrum?

• Temporal, Spatial, Occupation, & Priority

• Frontal, Parental, Occupational, & Auditory

• Occipital, Temptation, Frontal, & Parental

• Parietal, Temporal, Occipital, & Frontal

Analyze the impact of damage to the spinal cord on reflex actions.

• Reflex actions become faster

• Reflex actions are unaffected

• Reflex actions may be impaired or lost

• Reflex actions become voluntary

What is the role of synaptic vesicles in the synapse?

• They release neurotransmitters into the synaptic cleft

• They receive signals from the postsynaptic neuron

• They insulate the axon

• They generate electrical impulses