Extra stuff for Test 2 Flashcards
Acetylcholine (ACH)
Deals with motor movement and memory.
What’s a neurotransmitter?
Chemicals that transmit signals from a neuron across a synapse
Lack of Acetylcholine
Alzheimer’s
Dopamine
Deals with motor movement and alertness.
Dopamine (Lack of and too much)
lack of- Parkinson’s disease
Too much- Schizophrenia
Serotonin
Involved in mood control
Serotonin (lack of)
Clinical depression
Endorphins
Pain control
Addictive drugs
deal with Endorphins
Central nervous system
The brain and spinal cord
Types of neurons
-Efferent (motor)
-Interneurons
-Afferent (sensory)
Peripheral nervous system
All nerves that are not encased in bone.
Perihernal nervous system is
Everything but the brain and spinal cord.
Periheral system is divided into
Somatic and autonomic
Somatic nervous system
Controls voluntary movement
-use motor (efferent) neurons
Autonomic nervous system
Controls the automatic functions of the body.
Autonomic system is divided into
sympathetic and parasympathetic
Sympathetic nervous system
- Fight or Flight Response.
Sympathetic system does what?
-Automatically accelerates heart rate, breathing, dilates pupils, slows down digestion.
Parasympathetic nervous system
Automatically slows the body down after a stressful event.
Parasympathetic does what?
Heart rate and breathing slow down, pupils constrict and digestion speeds up.
Electroencephalogram (EEG)
Detects brain waves through their electrical output.
Used mainly in sleep research, epilepsy.
Computerized axial tomography (CAT scan)
3D X-Ray of the brain.
CAT scan is used to=
Used to locate tumors, bleeding, skull fractures, and for more detail on stroke patients.
Magnetic Resonance imaging (MRI)
takes detailed picture of brain using magnetic field to knock electrons off axis.
What does an MRI show?
tissue damage, disease, inflammation, or a tumor.
Positron Emission tomography (PET Scan)
a visual display of brain activity that detects where a radioactive form of glucose goes while the brain performs a given task.
