Collection of billions of specialized cells that transmit information between different parts of the body
Central Nervous System
The brain and the spinal cord
Peripheral Nervous System
The nerves that link the CNS to the skin, muscles and glands
chemical regulator of the body, composed of the glands that secrete hormones
One of the billions of cells in the nervous system
Part of the neuron that contains the nucleus of the cell and that keeps the cell alive
Part of neuron that collects information from the other cells and sends it to the soma
Part of neuron that transmits information away from the cell body towards other neurons
Layer of fatty tissue surrounding the axon of a neuron that acts as an insulator and allows faster transmission of the electrical signal
State in which the neuron contains a greater number of negatively charged neurons than the area outside the cell does
Change in electrical charge that occurs in a neuron when a nerve impulse is transmitted
Node Of Ranvier
Break in the myelin Sheath of a nerve fiber
Small gap between neurons across which the nerve impulses are transmitted
Chemical that relays signals across synapses between neurons
Process where the neurotransmitters in the synapse are reabsorbed into the transmitting terminal buttons.
drug that has chemical properties similar to a particular neurotransmitter and mimics the effect of the neurotransmitter (coke and dopamine)
Drug that reduces or stops the normal effects of a neurotransmitter (nicotine)
Oldest and innermost region of the brain. Controls the most basic functions such as breathing, attention, and motor responses
Area of the brain stem that controls heart rate and breathing
Structure in the brain stem that that helps control the movements of the body. Especially in balance and walking
Long, narrow network of neurons that runs through the medulla and the pons
Egg-shaped structure above the brain that filters sensory info coming up from the spinal cord and relays signals to the higher brain levels
Two wrinkled ovals located behind the brain stem that function to coordinate voluntary movement
Brain area located between the two hemispheres that governs emotion and memory
Region of the old brain responsible for regulating our perception and reaction to aggression and fear
Brain structure that regulates hunger, sexual behavior and links nervous system to the endocrine via the pituitary
Limbic system brain structure that stores info in long term memory
Outer bark like layer of the brain that allows us to use languagem complex skill, create tools, and be in social groups
Cells that surround and link to the neurons, protecting them, providing them with nutrients, and absorbing unused neurotransmitters.
One of the 4 brain lobes responsible primarily for thinking, planning, memory, and judgement
One of the four brain lobes responsible for processing information about touch
One of the 4 brain lobes respos. for visual information
One of the 4 brain lobes responsible for hearing and language.
Part of cortex that controls and executes mvmts of the body by sending sigs to the cerebellum and the spinal cord.
Area behind and parallel to the motor cortex at the back of the frontal lobe that receives and info from the skins sensory receptors and the movements of the body parts
Area located in the occipital lobe that processes visual information
Area in the temporal lobe that processes visual information
Brain regions in which sensory and motor info is combined and associated w/ stored knowledge
Ability for brain to change its structure and function in response to experience or damage
Forming of new neurons
Idea that the left and right hemispheres of the brain are specialized to perform different functions
Region that connects the two halves of the brain
Left side of brain controls?
Right side of brain controls?
Record electrical activity produced by the brains neurons through the use of electrodes placed around the head.
Neuroimaging technique that uses a magnetic field to create images of the brain structure and function
magnetic pulses are applied to brain of a living persons with the goal of deactivating a region.
Neuron that carries information from the sensory receptors
Neuron that transmits info to the muscles and glands
most common type of neuron that is responsible for communicating among neurons
Involuntary and instantaneous movement in response to stimuli
Autonomic Nervous System
Governs internal activities of the human body
Somatic Nervous System
Division of the PNS that controls external aspects of the body
Sympathetic Division of the ANS
Prepping body in response to stress by activating organs in the endocrine system
Parasympathetic Division of ANS
Calms body down by slowing heart rate and breathing and allowing body to recover.
The natural balance of the body's systems
Groups of cells that functions to secrete hormones
Chemical that moves throughout the body to help regulate emotions and behaviors.
Pea-sized gland that is located near brain that controls the body's growth
Produce hormones that regulate salt and water balance in the body and are involved in metabolism, immune, and sexual development and function