Intercellular Signaling (homework questions) Flashcards
Secreted by glands into capillary and has target organs reached by blood
Endocrine
Secreted by neurons into capillary and has target organ reached by blood
Neuroendocrine
Released by axon terminals of neurons into the synaptic junction, acts locally
Neurotransmitters
Secreted by cells into extracellular fluid and effects neighboring cells of a different type
Paracrine
Secreted by cells into extracellular fluid affects the function of the same cells that produced them
Autocrine
Which biochemical class of endocrine molecules is stored in secretory vesicles?
Proteins and polypeptides
Which biochemical class of endocrine molecules needs a transport plasma protein to travel in the blood?
Steroid
Which biochemical class of endocrine molecules binds to a nuclear or cytoplasmic receptor for its function?
Steroid
What is the name of the class of endocrine molecules derived from the amino acid tyrosine?
Catacholamines
Which hormone, derived from an AA, acts like a steroid?
Thyroid hormone
Name the three polypeptide growth factors
- Mitogens
- Trophic factors
- Chemoattractants
What do mitogens do?
Stimulate cell proliferation (mitosis)
What do trophic factors do?
Growth & survival
What do chemoattractants do?
Gradient for mobile (WBC) cells (inflammation)
What cells produce histamine?
Mast cells
