Although different in many ways, the endocrine and nervous systems often work together to bring about
The word root hormao, as used in "hormone," most nearly means
Which adjective describes cells that can respond to a given hormone, as well as the organs that contain them?
Each cell's sensitivity to a hormone is determined by the presence or absence of the necessary ____________ on the cell surface or in the cytoplasm.
Hormonal effects that persist for days or weeks make the endocrine system particularly effective in
|A)||responding to localized needs of the cardiovascular and respiratory systems|
|B)||producing widespread, gradual effects such as growth and development|
|C)||conveying information to the CNS and to muscle and gland cells|
|D)||making immediate adjustments in response to ambient conditions|
Which one of the following does not characterize the endocrine system?
|A)||short-term responses that terminate with removal of stimuli|
|B)||relatively slow reaction times (seconds to minutes to hours)|
|C)||typically widespread, general effects throughout the body|
|D)||slow return to pre-stimulation levels of activity|
Based on chemical structure, hormones are classified as
|A)||biogenic amines, carbide hormones, and protein hormones|
|B)||peptide derivatives, carboxylic acid derivatives, and proteins|
|C)||carboxylic acid derivatives, biogenic amines, and proteins|
|D)||peptide hormones, steroid hormones, and biogenic amines|
Most of our body's hormones are
Regulatory hormones from the hypothalamus directly influence the ____________ gland's secretory activity.
Which of the following is not an anterior pituitary hormone?
What are the two gonadotropins secreted by the anterior pituitary?
|A)||GH and PRL|
|B)||TSH and ACTH|
|C)||FSH and LH|
|D)||MSH and OT|
The hypothalamus transports two hormones to the ____________ for storage and subsequent release.
Which hormone stimulates milk ejection from the mammary glands by means of a positive feedback loop?
All of the following are true of antidiuretic hormone (ADH) except
|A)||released when body is dehydrated|
|B)||increases water retention from kidney tubules|
|C)||causes dilation of peripheral blood vessels|
|D)||results in increased blood pressure|
Triiodothyronine (T3) and thyroxine (T4) are the two forms of which hormone?
Which hormone, produced by the thyroid gland's parafollicular cells, stimulates osteoblast activity and inhibits osteoclast activity?
Ultimately, hormonal secretion by the ____________ raises calcium levels in the blood.
The adrenal cortex has a distinctive yellow color because
|A)||it has a very limited blood supply and therefore lacks hemoglobin|
|B)||its thick capsule is rich in yellowish elastic fibers|
|C)||its cells store lipids used in producing steroid hormones|
|D)||all of the above|
The ____________ from the adrenal cortex are vital hormones; if the glands cannot function, these hormones must be supplemented throughout life.
Which hormones of the adrenal cortex stimulate metabolism of lipids and proteins, and help regulate blood sugar levels?
|D)||all of the above|
The principal mineralocorticoid, which regulates the ratio of sodium and potassium ions in body fluids, is
Although an endocrine structure, the ____________ is essentially a modified sympathetic ganglion.
Which of the following correctly pairs a pancreatic islet cell with the hormone it secretes?
|A)||alpha cell, insulin|
|B)||beta cell, pancreatic polypeptide|
|C)||delta cell, somatostatin|
|D)||F cell, glucagon|
Which pancreatic hormone raises blood glucose levels?
Which endocrine gland is attached to the posterior region of the epithalamus?
Which endocrine organ is located in the mediastinum superior to the heart, just posterior to the sternum, and diminishes in size with age?
Which of the following is a kidney hormone that accelerates red blood cell production and maturation?
The enzyme released by kidney cells that affects angiotensinogen is
Which hormone is secreted by modified cardiac muscle cells in response to excessive stretch in the heart wall?
The testes produce male sex hormones called ____________, many of which are converted into testosterone.