Unit 2 for quiz 2 Flashcards
who correctly located the mind in the spherical head?
plato
who believed it to be in the heart
Aristotle
who- (phrenology)
-Studying bumps on the skull could reveal a person’s mental abilities and character traits
-Succeeded in focusing attention on the localization of function
Franz Gall
what is the scientific study of the links between biological (genetic, neural, hormonal) and psychological processes
Biological psychologists
what is a nerve cell; the basic building block of the nervous system
Neuron
what is a neuron’s busy, branching extensions that receive messages and conduct impulses toward the cell body / listeners
Dendrites
what is the neuron extension that passes messages through its branches to other neurons or to muscles or glands / speakers
Axon
soma is also called the what
cell body
what is a type of glial cell that helps produce myelin sheath
Schwann cell
what is a gap in the myelin sheath of a nerve
Node of ranvier
what is a fatty tissue layer segmentally encasing the axons of some neurons; enables vastly greater transmission speed as neural impulses hop from one sausage-like node to the next (age 25)
Myelin sheath
what is a neural impulse; a brief electrical charge that travels down the axon (a sequence of shifts)
Actional potential
what is a period of inactivity after a neuron has fired
Refractory period
what is the level of stimulation required to trigger a neural impulse or action potential
Threshold
what is a neuron’s reaction of either firing (with a full-strength response) or not firing
All-or-none response
who suggested a brief interruption in the transmission
Sir Charles Sherrington
what is the junction between the axon top of the sending neuron and the dendrite or cell body of the receiving neuron / the tiny gap at this junction is call the synaptic gap or synaptic cleft
Synapse
what is chemical messengers that cross the synaptic gaps between neurons / when released by the sending neuron, travel across the synapse and bind to the receptor sites on the receiving neuron, thereby influencing whether that neuron will generate a neural impulse
Neurotransmitters
what is a neurotransmitter’s reabsorption by the sending neuron
Reuptake
what is “morphine within” natural, opiate-like neurotransmitters linked to pain control and to pleasure
Endorphins
what is a molecule that, by binding to a receptor site, stimulates a response
Agonist
what is a molecule that, by binding to a receptor site, inhibits or blocks a response
Antagonists
what system the body’s speedy, electrochemical communication network, consisting of all the nerve cells of the peripheral and central nervous systems
Nervous system
the brain and spinal cord are apart of what system
Central nervous system (CNS)
what system is the sensory and motor neurons that connect the central nervous system (CNS) to the rest of the body
Peripheral nervous system (PNS)
what system is the division of the peripheral nervous system that controls the body’s skeletal muscles (skeletal nervous system)
Somatic nervous system
what system is the part of the peripheral nervous system that controls the glands and the muscles of the internal organs (such as the heart) / its sympathetic division arouses; its parasympathetic division calms
Autonomic nervous system (ANS)
what system is the division of the autonomic nervous system that arouses the body, mobilizing its energy in stressful situations
Sympathetic nervous system
what system is the division of the autonomic nervous system that calms the body; conserving its energy
Parasympathetic nervous system
what is bundled axons that form neural “cables” connecting the central nervous system with muscles, glands, and sense organs
Nerves
what is neurons that carry incoming information from the sensory receptors to the brain and spinal cord
Sensory (afferent) neurons
what is neurons that carry outgoing information from the brain and spinal cord to the muscles and glands
Motor (efferent) neurons
what is neurons within the brain and spinal cord that communicate internally and intervene between the sensory inputs and motor outputs
Interneurons
what is a simple, automatic response to a sensory stimulus, such as the knee-jerk response
Reflex
what system is the body’s “slow” chemical communication system; a set of glands that secrete hormones into the bloodstream
Endocrine system
what is chemical messengers that are manufactured by the endocrine glands travel through the bloodstream and affect other tissues
Hormones
what gland is a pair of endocrine glands that sit just above the kidneys and secrete hormones (epinephrine and norepinephrine) that help arouse the body in times of stress (fight-or-flight response)
Adrenal glands
what gland what is the endocrine system’s most influential gland / under the influence of the hypothalamus / regulates growth and controls other endocrine glands (sex glands)
Pituitary gland
what test is an amplified recording of the waves of electrical activity sweeping across the brain’s surfaces / measured by electrodes placed on the scalp
Electroencephalogram (EEG)
what test is a series of X-ray photographs taken from different angles and combined by computer into a composite representation of a slice of the brain’s structure to reveal brain damage / CAT scan
CT (computed tomography) scan