Chapter 31

_______ are signaling molecules released from one type of cell that can alter target cell activities. a. Hormones d. Local signaling molecules b. Neurotransmitters e. both a and b c. Pheromones f. a through d

ADH and oxytocin are hormones produced in the hypothalamus but distributed from the ____________. a. anterior lobe of pituitary b. posterior lobe of pituitary c. pancreas d. pineal gland

Overproduction of ____________ causes gigantism. a. somatotropin c. insulin b. ADH d. melatonin

Which do not stimulate hormone secretions? a. neural signals d. environmental cues b. local chemical changes e. All of the above can c. hormonal signals stimulate secretion.

_________lowers blood sugar levels; __________ raises it. a. Glucagon; insulin c. Gastrin; insulin b. Insulin; glucagon d. Gastrin; glucagon

The pituitary detects a rising hormone concentration in blood and inhibits the gland secreting the hormone. This is a ______ feedback loop.. a. positive c. long-term b. negative d. b and c

The ____________ has endocrine and exocrine functions. a. liver c. pineal gland b. pancreas d. parathyroid gland

Match the hormone source listed at left with the most suitable description at right. _______adrenal medulla _______thyroid gland _______parathyroid glands _______pancreatic islets _______pineal gland _______prostaglandin a. affected by daylength b. potent local effects c. raises blood calcium level d. epinephrine source e. insulin, glucagon f. hormones require iodide