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A&P Section 18.1-18.3

what is an example of a hormone that doesn’t bind to receptors on the plasma membrane, but rather to intracellular receptors in the cytoplasm?
steroid hormones
what is the slender, funnel-shaped structure that connects the pituitary gland to the hypothalamus?
infundibulum
Which of the following is NOT a way hormones affect target cells?
causing an action potential to occur
The hypothalamus secretes regulatory hormones that affect what gland?
pituitary gland
Which of the following is an important second messenger produced by hormonal effects on a target cell?
cyclic amp
In what category are the eicosanoids, based on chemical structure?
lipid derivatives
Which of the following statements about hormones is FALSE?
they are involved in direct communication between cells
Why is the hypothalamus a major coordinating and control center?
it contain autonomic centers and acts as an endocrine organ
Often, when brains are removed from the body and examined in dissection, the pituitary gland is missing. This is likely because it is encased in which of the following bony structures?
sella turcica
What is meant by the term second messenger in endocrine communication?
An intermediary molecule produced by hormone and receptor interaction
Which of the following is NOT classified as an amino acid-derivative hormone?
eicosanoids
What type of communication uses gap junctions to allow communication between adjacent cells?
direct communication
Which of the following would NOT be characterized as an endocrine-controlled process?
the constriction of iris muscles when a bright light is shined on the eye
A hormone that stimulates the opening of calcium channels and interaction with calmodulin __________.
will trigger the activation of cytoplasmic enzymes
Which hormone secreted by the adenohypophysis simulates the release of hormones by the adrenal cortex?
adrenocorticotropic hormone
What is an example of a hormone that doesn’t bind to receptors on the plasma membrane, but rather to intracellular receptors in the cytoplasm?
steroid hormones
The hypothalamus provides the highest level of endocrine control. Which of the following is NOT a way the hypothalamus provides that control?
the hypothalamus produces and secretes neurotransmitters, and distributes them to neurons
The release of hormones by endocrine cells alters the __________.
metabolic activities of many tissues and organs simultaneously
Which pituitary hormone causes liver cells to release somatomedins that increase the rate of uptake of amino acids by cells such as skeletal muscle fibers?
growth hormone
Which pituitary hormone causes a decrease in the amount of water lost in the kidneys?
antidiuretic hormone
Which of the following hormones is secreted in the pituitary gland and controls melanin production during fetal development, in young children, in pregnant women, and in some disease states?
melanocyte-stimulating hormone
The biogenic amino hormones include __________.
E. NE. dopamine. melatonin, and thyroid hormones
What is another name for the posterior lobe of the pituitary?
neurohypophysis
Which type of communication is involved in short-lived communication and crisis management?
synaptic communication
An abnormally low production of gonadotropin produces a condition called __________.
hypogonadism
Response patterns in the endocrine system are particularly effective in __________.
coordinating cell tissue and organ activities on a sustained long-term basis

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