What chemical, when secreted into the bloodstream, controls the metabolic processes of target cells?
neurotransmitters
secretion
hormone
ligand
Steroid hormones are very powerful because they:
are hormones
are medicine
interact directly with DNA
are secreted outside the body
Which of the following is true of hormones?
They last a short time
They are fast acting
They affect distant targets
They leave the body
Which of the following is the least common way that hormones are regulated?
negative feedback
chain of command
positive feedback
direct control by nervous system
The "ideal" value for a body characteristic is called the:
set point
average
goal
feedback point
