18 Questions
What is the primary function of homeostasis in organisms?
To maintain a constant internal balance
What is the region of the brain responsible for controlling thermoregulation in mammals?
Hypothalamus
What type of hormones are catecholamines and thyroid hormones classified as?
Amino acid derivatives
What is the characteristic of lipophilic hormones?
They are lipophilic and lipid-soluble
What is the function of hormones in the endocrine system?
To act as regulatory chemicals
What is the term for the process by which the body regulates its temperature?
Thermoregulation
What is the characteristic of hydrophilic hormones?
Freely soluble in blood
Which part of the pituitary gland is of epithelial tissue in origin?
Anterior pituitary
What is the function of releasing hormones from the hypothalamus?
Stimulate the secretion of specific anterior pituitary hormones
What is the mechanism that maintains proper levels of the target cell hormone?
Negative feedback or feedback inhibition
What is the characteristic of the posterior pituitary?
It contains axons that originate in the hypothalamus
How many capillary beds are present in the hypothalamohypophyseal portal system?
Two
Where are the neuron cell bodies that produce antidiuretic hormone and oxytocin located?
Hypothalamus
What is the effect of antidiuretic hormone on the kidney?
Increased water reabsorption
What is the role of oxytocin in mammals?
Stimulation of milk ejection and uterine contractions
What is the response of the pancreas to the release of acidic stomach contents into the duodenum?
Increase in pH levels
What is the function of secretin in the digestive system?
Neutralization of acidic stomach contents
What is the dual function of the pancreas in the body?
Endocrine and exocrine
This quiz covers the concept of homeostasis in humans, including the regulation of body temperature, blood pH, and glucose concentration. It also explores the role of the hypothalamus in thermoregulation and how it responds to changes in the body's set point. Test your knowledge of these vital physiological processes!
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