Test 1 Flashcards
behavioral endocrinology
scientific study of interaction between hormones and behavior
what influences what in behavior endocrinology
hormones can influence behavior and behavior can influence hormones
what is an example of a not good model system
humans, ethical issues, these studies are usually correlational
How did hormones affect Jose Canseco
He was a baseball player with amazing stats but admitted he used major steorid hormones, his arrest record was also very significant showing the possibility of the steroids affecting his behavior leading to his arrest record
behavior
the action carried out by effectors (often muscles) under control of the nervous (or endocrine) system in response to stimulus
what does sensory input lead to
integration and then motor output
where does integration occur
central nervous system
where does motor output occur
peripheral nervous system
Tinbergens 4 questions of behavior
Mechanistic
Developmental
Survival Value
Evolutionary/Phylogenetic
which of the questions are considered proximate
mechanistic
developmental
DM me for a proximate answer
which questions are considered ultimate
Survival Value
Evolutionary/Phylogenetic
sUe Tingergen
what makes something a proximate behavior
immediate
what makes something an ultimate behavior
longer lasting
mechanism
immediate causation, what stimulis elicts the behvaior and what physiologucal mechanims mediate the response
ex: neurons, hormones, stimulis that triggers a behavior to happen
ontogeny
development, how does the animals experience during growth and development influence the response? how did this behavior rise over time
adaptation
adaptive function, how does this behavior aid in survival and reproduction? why did the behavior evolve
phylogeny
evolution, what is the behavior evolutionary history?
example of phylogeny
we walk upright, evolved in an ancestor of all common humans
What causes male sonbirds to sing mechanistically?
becuase of high level of certain hormones
what causes male songbirds to song ontogeny
becuase they learned to sing from their fathers during a critical period of development
what causes male songbirds to sing phylogeny
becuase they evolved from a common ancestor that sang
T/F A hypothesis makes sense therefor it is correct
FALSE
What does science “do” to a hypohtesis
supports or disproves it DOES NOT PORVE
How are correlation and causation related
they are not, correlation does not equal causation
anthropomorphism
giving human attributes to animals
whatn happens to males and females during a sproting event
both have higher levels of testostern but Males increase significantly
what changes for males and females when stressed during an event
womans stress levels decrease as the event goes on but male stress levels increaase due to cortisol levels
eunuch
men castrated before puberty, used by royalty to gaurd women for other men, made men more pious so they wouldnt engage in sexual behavior, take the testies away and then assume you could change the behavior
castrati
men with singing voices euqal to soproanos in range due to castration
what did Bethold find when he castrated chicks, reimplanted and transplated testis
castrated ones became capons
the ones that were reimplanted or trasnplanted had normal male nevelopment and behavior
what did betholds experiment demonstrate
testes are transplantable organs
transplanted testes can function and produce physiological changes including making the chicks turn into male roosters
testes function is not controlled by the nervous system (he cut the nevrous system connections yet the rooster still developed)
hormones ____ cause behavior to happen; hormones make specific ________ more or less liekly to occur in a specific context
do not, behaviors
hormone
chemical messenger produced and released by endocrine glands, cells that release chemical molecules and go throughout the blood stream and activate a reponse in cells that have a receptor for it
are all neurotransmitters hormones
no some are, all hormones are neurotransmitters, but not all neurotransmitters are hormones ****
removal
hormonally dependent behavior should disappear when the source of the hormone is removed
replacement
hormally dependent behavior should be restored with addition of the hormone
correlation
appearance of hormonally dependent behavior should be covariant with hormone concentration
hypothesectomy
remove pituitary and restore the hormones, just ebcuase you take away a halnd and bhevaior goes away doesnt mean the hormones control that behvaior
what is the endocrine system
endocrine means to release within, network of hormone secreting organs that coordinate homeostatic and physiologic processes including reproduction, development, metabolism growth and behavior
how does he endocrine system work
endocrine glands secrete hormones, hormones travel through the circulatory system to target cells, hormones bind to their receptors, triggering cellular repsonse
why does the endocrine system work
feedback mechanisms, HPG or T or A axis
what does coordination of biological systems require
cell signaling
what do some cells give up and why
give up the ability to reproduce in order to help other cells reproduce
T/F hormones can only do one thing
False they can do lots of different things in the body once it gets to its target
speed of endocrine system compared to nervous system
slow and broad compared to nervous which is fast and targeted
which 2 systems work together
nevrous and endocrine
what are the types of cell signaling
endocrine
paracrine
autocrine
synaptic
neuroendocrine
endocrine signaling
hormone eignaling
paracrine signaling
signals are released and go very short distance to bind cells near by
autocrine signaling
is a cell sending message to itself (type of feedback mechanims)
example of autocrine signaling
testosterone released by cells, travel through the blood stream to act on far away cels, near by cells and on itself
what types of hormones are involved in synaptic and neuroencocrine singalling
neurotransmitters
synaptic singaling
message from one cell to another, just happends to be a neuron, specialized paracrine signal
neuroendocrine signaling
neuron relases it chemical message at a synpase but instead of synapsing another cell it goes to the blood stream
chemical messenger
any substance that is produced by a cell that affects the function of another cell
cyotkine
a chemical messenger that evokes proliferation of other cells, especially in the immune system
neurohormone
hormone produced by a neuron
neuromodulator
hormone that changes the response of a neuron to some other factor, change membrane potential of neurons
neurpeptide
peptide hormone produced by a neuron
neurosteroid
a steroid hormone produced by a neuron
neurotransmitter
a chemical messenger that acts across a neural synapse
parahormome
hormone like chemcial which is generally not produced by an endocrine galdn but has effects through the blood stream, like a homrone but doesnt fit our definition since it is not secreted by an endocrine gland
example of a parahormone
prostglandins
prostaglandins
play a role in inflammatory repsonse of a chemcial compound but can also be used as a pheromone
prohormone
precursor to other hormones; can also be hormones themsleves, something that can become another hormone
example of a prohormone
testosterone since it can bind to androgen receptors or it can be turned into estrogen and estrogen does its own thing
where do endocrine glands release to in endocrine system
endocrine glands are ductless so releases directly to fluid around them
what is the blood supply like for the endocrine glands
rich blood supply, close to blood, highly vascularized, released and diffused
where are hormones secreated into
bloodstream
what is special about hormone receptors
they have specific binding sites, embedded in the cell membrane or insdie the cell, that interact with a particular hormone or class of hormones
major endocrine structures
hypothalamus
pineal gland
pituitary glans (anterior and posterior)
thyroid
adrenal glands (andrenal cortex and adrenal medulla)
pancreas
gut
gonads (testes/ovaries)
hairy people paint their arms purple gold and green*
function of hypothalamus
control of hormone secretion, releases hormones or inhibiting hormones
pineal gland
reproductive maturation; body rhythms, sometimes called the 3rd eye of the brain, repsonsible for releasing melatonin
anterior pituitary
hormone secretion by thryoid, adrenal coretex, and gondas, growth
the endorcrine part
posterior pituitary
water balance and salt balance
part of the brain art
*i gotta post up to get my balance back**
adrenal cortex
salt and carbohydrate metabolism; inflamatory reactions
adrenal medulla
emotional arousal
pancreas
islets of langerhans, sugar metabolusm, insulin and glucagon secreated
gut
digestion and apetite control
gonads
testes and ovaries, body development; maintenacne of reproductive organs in adults
what types of hormones are water soluble ancd what does this feature allow them to do
proteins are water soluble and can move readilty through the blood stream
which type of hormones do not move easily in water
steorids
monoamines
hormones made from singular amino acids
what is the feature of lipid soluble hormones
hydrophobic
what is the largest group of hormones
protein/peptide hormones
how long are protein/peptide hormones
can be few or hundreds of amino acids in length
where are protein/peptide hormones stored
in vesicles in cells, they are water soluble so they cannot cross the cell membrane
what are protein/peptide hormones released by?
exocyotis since, they cant cross the membrane
T/F Protein/Peptide hormones are soluble in blood
True
how are protein peptide homrones removed
by degradation or excretion, broken down
difference between which prtoein peptide hormones last longer
larger molecules last longer in the body since they take longer to break down
what do protein peptide homrones act on
cell surface receptors
What are protein peptide hormones made by and what do they code for
Made by amino acids and coded for by DNA
what happens to proteins across specific species
can be modifed but are highly conserved by vertabrates
what are monoamines made from
single amino acids
what is included in monoamines
catecholines and indoleamines
sometimes thyroid hormones
what are catedcholamoines derived from
tyrosine
what are thyroid hormones derived from
tyrosine
what are indoleamines derived from
tryptophan
what are the chatecholine
epinephrine, norepinephrine, dopamine