24 Questions
Which system do the endocrine glands and hormone-secreting organs and tissues form?
Endocrine system
Where do endocrine glands secrete hormones?
Directly into the bloodstream
What are the chemical messengers used by organs and tissues to communicate with cells?
Hormones
What are the cells that hormones act upon called?
Target cells
What is the main difference between steroid hormones and non-steroid hormones?
Their solubility
What do steroid hormones pass directly through in their target cells?
Cell and nuclear membranes
What are hormones responsible for when homeostasis is disrupted?
Restoring balance
What do hormones maintain in the body?
Fluid balance
Which of the following is a function of hormones?
Maintaining basal metabolic rate
What do non-steroid hormones not have the ability to do?
Activate gene expression
What do non-steroid hormones bind to on the surface of their target cells?
Cell surface receptors
What do hormones assist in when it comes to food digestion?
Breaking down nutrients
Where do steroid hormones bind to their specific receptors?
Cytoplasm or nucleoplasm
What is the main reason non-steroid hormones cannot diffuse across the phospholipid bilayer of the target cell?
They are water-soluble
How do non-steroid hormones carry information from the hormone to the interior of the cell?
Through second messengers like cAMP
Why do non-steroid hormones affect target cells quickly?
Because they affect proteins that are already present in those cells
Where do endocrine glands secrete hormones directly into?
Bloodstream
What ensures that the hormone is not overproduced or under produced in the bloodstream?
Negative feedback system
Where does the hypothalamus secrete releasing and inhibiting factors?
Into a portal system of capillaries
What is the main role of oxytocin?
Important roles in childbirth and lactation
What does the posterior pituitary gland release into the bloodstream?
Oxytocin and Antidiuretic hormone (ADH)
What is the main role of Antidiuretic hormone (ADH)?
Affects nephrons of the kidney
Which glands are part of the endocrine system?
Thyroid gland, adrenal glands, and pancreas
What is the main function of the endocrine system?
Regulation of body's growth, metabolism, and sexual development
Test your knowledge of the endocrine system with this quiz! Explore the functions of endocrine glands, hormone secretion, and the interactions with the nervous system. This quiz covers essential concepts related to hormone signaling and communication within the body.
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