Neuroscience and Behavior Flashcards
It consists of the brain and nerves that coordinate actions and sensory information throughout the body.
Nervous System
It consists of the brain and the spinal cord.
Central Nervous System
It is an organ roughly half the size of a loaf of bread that constantly controls behavior.
Brain
A bundle of nerves that leaves the brain and runs down the length of the back; transmits messages between the brain and the body.
Spinal Cord
It is made up of long axons and dendrites and contains all parts of the nervous system other than the brain and spinal cord; it branches put from the spinal cord and brain and reaches the extremities of the body.
Peripheral Nervous System
The part of the peripheral nervous system that specializes in the control of voluntary movements and the communication of information to and from the organs.
Somatic Division
The part of the peripheral nervous system that controls involuntary movement of the heart, glands, lungs, and other organs.
Autonomic Division
2 parts of the Central Nervous System
- Brain
- Spinal Cord
2 divisions of Peripheral Nervous System
- Somatic Division
- Autonomic Division
2 parts of the Autonomic Division
- Sympathetic Nervous System
- Parasympathetic Nervous System
The part of the autonomic division of the nervous system that acts to prepare the body for action in stressful situations.
Sympathetic Nervous System
It is the threat where the organisms’ resources will engage and response.
Fight or Flight
The part of the autonomic division of the nervous system that acts to calm the body after an emergency has ended.
Parasympathetic Nervous System
The feeling of calmness of the body after an emergency has ended.
Rest and Digest
It is called nerve cells and is the basic elements of the nervous system.
Neurons
It is a cluster of fibers at one end of a neuron that receives messages from other neurons.
Dendrites
The part of the neuron that carries the messages to the other neurons.
Axon
Small budges at the end of axons that send messages to other neurons.
Terminal Buttons
A protective coat of fat and protein that wraps around the axon.
Myelin Sheath
The state in which there is a negative electrical charge of -70 millivolts within a neutron.
Resting State/Potential
The rule that neutrons are either on or off.
All-Or-None Law
An electrical nerve impulse that travels through a neuron’s axon when it is set off by a “trigger: changing the neuron’s change from negative to positive.
Action Potential
The space between two neurons where the axon of a sending neuron communicates with the dendrites of a receiving neuron by using chemical messages.
Synapse
Chemicals that carry messages across the synapse to the dendrites (cell body) of a receiver neuron.
Neurotransmitter
2 other chemicals of Neurotransmitters
- Excitatory Message
- Inhibitory Message
A chemical message that makes it more likely that a receiving neuron will fire and an action potential will travel down its axon.
Excitatory Message
A chemical message that prevents or decreases the likelihood that a receiving neuron will fire.
Inhibitory Message
A chemical communication network that sends messages throughout the body via the bloodstream.
Endocrine System
2 chemicals in the Endocrine System
- Hormones
- Neurotransmitters
Chemicals that circulate slowly through the blood and body, regulates the functioning or growth of the body.
Hormones
Travel across synapses only, is quick and remain in the nervous system.
Neurotransmitter
3 parts of the Brain
- Hindbrain
- Midbrain
- Forebrain
4 parts of the Hindbrain
- Medulla
- Cerebellum
- Pons
- Reticular Formation
Responsible for regulating largely unconscious functions such as breathing and circulation.
Medulla
Controls bodily balance.
Cerebellum
Involved in sleep and arousal.
Pons
A networks of neurons related to sleep, arousal, and attention.
Reticular Formation
4 parts of the Forebrain
- Thalamus
- Hypothalamus
- Limbic System
- Cerebrum and Cerebral Cortex
Relay center for cortex; handles incoming and outgoing signals.
Thalamus
A tiny part of the brain, located below the thalamus, that maintains homeostasis and produces and regulates vital behavior, such as eating, drinking, and sexual behavior.
Hypothalamus
The part of the brain that controls eating, aggression, and reproduction.
Limbic System
The “new brain”, responsible for the most sophisticated information procession in the brain.
Cerebrum and Cerebral Cortex