Week 6 Flashcards
_________ a type of signaling in which a cell produced a signal to induce changes in nearby cells
paracrine
_________ a type of signaling where a cell signal released from the cell binds to the same cell
autocrine
_________ through the bloodstream to go to a distant cell
endocrine
___________ via neuropeptide transmission at the synapse
nervous
________ via steroids in the blood
endocrine
__________ neurons that secrete endocrine factors
neuroendrocriune
what is the negative feedback loop of the internal and external environment
- internal and external environment
- neurosecretory cell in CNS released neurohormone
- exocrine organ acts on target cells
- target cells activation results in negative feedback on neursecretory cells
________ 12% of insects including crickets, beetles, grasshopper, these organisms do not have a pupation stage during metamorphosis
hemimetabolous
____________ 88% of insects. These insects have a pupation period during metamorphisis
holometabolus
___________ is characterized by new organs, new sin, sexual change
metamorphosis
what is the glass tube experiment
this experiment setup allows us to see the new developing tissue. tissue remodeling is coordinated by endocrine factor
_________ these cells are involved in neurosecretion and endocrine regulation of Jh and ecdysone.
neurosecretory cells
__________ is involved in the production and secretion of prothoracic hormone PTTH
corpus cardiacum
_________ produced juvenile hormone
corpus allatum
______________ act on the proithoraicc gland which produces _________
PTTH and JH
Ecdysone
___________ characterized a molting phase
ecdysone
__________ characterized stages of feeding
Jh surge
___________ is a surge in JH and ecdysone. This commits the insect to metamorphisis
commitment peak
________ remain low until it is time to reproduce
JH
what are the necessary behaviors for ecdysis
- loosen cuticle
- shed old cuticle
*timing for ecdysis is crucial or the animal will suffocate
