1.1, 1.2, 1.3 Flashcards
Rooster Experiment
removed testes, implanted them into abdo cavity
Why rooster exp of interest
previous belief was neural communiction; indicated that there were secreted substances that did not require neural input
Why rooster exp of interest
previous belief was neural communiction; indicated that there were secreted substances that did not require neural input
NS, Endocrine, And immune communicate
reciprocally; brain is overseer
Hormones def
secreted from endocrine glands and brain
Neurotransmitters Def
released by neurons and peripheral NS
Neuropeptides def
Long chain AAs only secreted by neurons and endocrine glands
Cytokines def
cells released from immune system that communicate with brain and endocrine system
Describe HPA axis
see image
Draw image HPA axis
see image
Physiological response of HPA end hormones
Neurochem change, V protein synth in muscle, V glucose uptake in muscle, /\lipid mobilization, /\gluconeogenesis, immunosuppression
Axis is
progression of hormone release affecting lower and lower sytems
Draw figure 1.2
see 1.2
describe figure 1.2
see 1.2
Draw HPT axis
see pic
Describe HPT axis
see pic
Chronic stress effect on HPT axis
alteration of function which alters immune response
Types of communication between cells
- Intracrine 2. Paracrine 3. Autocrine 4. Neurocrine 5. Endocrine 6. Neuroendocrine
Intracrine communication
cells communicating with themselves without releasing chemical into interstitial space ex. cell producing estrogen?
Autocrine communication
chemical messengers into interstitial space - comes back and acts on extracellular receptors on itself & adjacent same cell types
Paracrine Communication
messengers released go to neighboring adjacent cells (no long dist), affects different TYPE of cell
Neurocrine Communication
form of paracrine; diffuse cross synapse and affect different cell type
Endocrine Communication
release hormones/messengers into blood stream and affect target cells at a distance
Neuroendocrine Communication
Neuron releases chemical messengers directly into circulation. Looks like neuron but acts like endocrine gland