Spinal Cord and Reflexes
Where is the spinal cord located?
It is located inside the vertebral column. It connects the brain with the peripheral nervous system.
What are the two main parts of the nervous system?
Central nervous system and peripheral nervous system.
What is the function of a neuron?
To transmit the nervous impulse.
What does the autonomic nervous system control?
It controls smooth muscles and organs without thinking.
How to clean your ears?
Use water, soap or physiological solution. Never use objects.
What is the function of the spinal cord?
It controls reflex actions (involuntary) that involve skeletal muscles.
What does the central nervous system include?
It includes the brain and the spinal cord.
What are the three types of neurons by function?
Afferent, efferent, and association neurons.
What does the sympathetic system do?
It works in stress or fear. It prepares the body to fight or escape.
What happens if you listen to loud music too long?
It can damage your ears.
What is a reflex arc?
It is the structure that produces a response without going to the brain.
What does the peripheral nervous system include?
It includes nerves that connect the central nervous system to the body.
What is a synapse?
It is the connection between two neurons.
What does the parasympathetic system do?
It helps relax the body when it is not in stress.
How to protect your eyes from screens?
Keep good distance and use good light.
What is the difference between monosynaptic and polysynaptic reflex?
Monosynaptic uses one neuron, polysynaptic uses an interneuron and more muscles.
What is the role of the cerebrum?
It controls memory, learning, voluntary responses.
What happens at the synapse?
Neurotransmitters send the message to the next neuron.
Give one difference between sympathetic and parasympathetic system.
Sympathetic dilates pupils, parasympathetic contracts pupils.
Why should you avoid very dry environments?
They dry the mucous membranes in nose and mouth.
Why does the reflex action not go to the brain?
Because it is very fast and protects the body from danger.
What does the medulla oblongata control?
It controls involuntary processes like heart rate and breathing.
What do Schwann cells do?
They cover the axons and help the message go faster.
What happens to the bladder with sympathetic vs. parasympathetic system?
Sympathetic contracts the sphincter, parasympathetic relaxes it.
What should you do after eating to take care of smell and taste?
Brush your teeth after eating.