Neurons/Nerve Impulse
The brain, spinal cord, central nervous system, and peripheral nervous system make up this organ system.
What is the nervous system?
The brain and spinal cord make up this division of the nervous system.
What is the central nervous system?
This part of the nervous system consists of everything that is not included in the CNS and it is further divided into two divisions: sensory and motor.
What is the peripheral nervous system?
These are the five senses.
What are sight, hearing, taste, touch, and smell?
This is any chemical that affects the body's structure or function.
What is a drug?
This signal jumps from one cell to another.
What is a nerve impulse?
These are just two of the functions of the brain.
What is control mental processes and interpreting information from the senses?
While this division of the PNS deals with our senses, this division carries never impulses from the CNS to our muscles.
What are the sensory division and the motor division?
Light focuses on the retina where receptor cells send nerve impulses to the optic nerve resulting in this sense.
What is sight?
These affect the CNS by influencing nerve impulse transmission.
What are psychoactive drugs?
These are the three types of neurons used by our body.
What are sensory neurons, motor neurons, and interneurons?
While this part of the brain controls conscious functions, this section of the brain coordinates our body's movements.
What is the cerebrum and the cerebellum?
Even though this system of the motor division controls our reflexes, which are unconscious, it mainly controls our conscious functions.
What is the somatic nervous system?
Sound waves enter the auditory canal and makes the eardrum vibrate, sending nerve impulses to the auditory nerve allowing us to have this sense.
What is hearing?
This is the use of a drug without the advice of a medical professional and it can lead to drug addiction, overdose, and death.
What is drug abuse?
This occurs when the inside of the cell has a negative charge compared to the surrounding area which is positively charged.
What is resting potential?
Unlike the cerebrum that controls our conscious functions, this part of the brain handles our unconscious functions.
What is the brain stem?
Unlike the somatic nervous system, this system controls our unconscious functions and is broken down into sympathetic and parasympathetic.
What is the autonomic nervous system?
Our lips, face, tongue, palms of hands, and soles of feet are full of pressure receptors that allow us to do this.
What is touch?
These disorders involve problems with blood flow and brain cells die quickly if their oxygen supply is cut off.
What are vascular disorders?
This occurs when the electrical charge of a neuron is suddenly reversed.
What is action potential?
This part of the central nervous system is in charge of delivering messages between the body and the brain.
What is the spinal cord?
Both of these divisions deal with involuntary actions. However, one deals with activities that aren't emergencies, while the other handles our "fight or flight" response.
What are the parasympathetic and the sympathetic divisions?
Taste buds on the tongue allow us to do this and odor receptors line our nasal passages allow us to do this.
What is taste and smell?
When nervous tissues breaks down, this happens.
What is a gradual loss of higher brain functions?