Ib psych unit 2 pt.2

Hormones

Chemical messenger transported through blood

Testosterone

Hormone made in the testes and ovaries. Synthesized in cholesterol and higher in males. That's used for developing primary and secondary sex characteristics,muscle, and lipido.

Endocrine system

Plays a role in releasing hormones in our body

Fear/ stress response

Emotional stimulus, amygdala, hypothalamus, pituitary gland, adrenal gland, release of stress hormones, adrenaline and cortisol, increase heart rate and body temp, increased physiological arousal.

Social threat

A threat that comes from another person or group of people (as opposed to a natural threat, like a wild animal).

Acetylcholine

An excitatory neuron that plays a role in muscle movement and memory

Agonist

A chemical that amplifies the effect if nt by binding to receptor sites

Antagonist

Chemical that reduces the effect of a nt by blocking the receptor site

Endogenous

A naturally occurring chemical in our body

excitatory neurotransmitters

Nt that increase the likelihood of neurons firing by depolarizing the neuron

exogenous

Chemicals made outside the body

inhibitory neurotransmitters

Nt that decreases the likelihood of a neuron firing by hyper-polarizing the neuron

Mindfulness

Being aware of ones internal state and surrounding

Neural pathways

a series of connected neurons that go from neural transmission to our nervous system

Neurotransmission

Nt being sent from 1 neuron to the next

neurogenesis

The brains ability to create new stringer neural pathways by repeating an experience.

Parts of neuron

cell body, dendrites, axon, nucleus, myelin sheath, terminal buttons

Neuroplasticity

The brains ability to create or neural pathways

Neurotransmitters

Chemical messager transmitted through neurons

Scolpamine

An antagonist for acetylcholine

Serotonin

An inhibitory nt that protects us from neg emotions but also regulates sleep, lipido, body temp

Tryptophan

An Amino acid used to make serotonin

central nervous system

brain and spinal cord

peripheral nervous system

all the nerves outside the brain and spinal cord

Sensory organ

Sends messages to brain from nt

Serotonin controls

Impulse behavior and aggression

Neural pruning

Removal of unused neural pathways

Meditation

the focusing of attention to clear one's mind and produce relaxation

Pheromones

Chemical cues released into the air secreted from glands and excreted from urine, impacts various social and reproductive behaviors

vomeronasal organ

Pheromone-detecting organ of vertebrates, behind the naval cavity and nostrils filled with sensory neurons. Found in amphibians, reptiles, and non primates. Not found in birds and most primates

Putative

Possible

Hexadecenal

Putative pheromone linked w human aggression and emitted from babies head