Part 1 Flashcards
Which of the following parts of the brain is not classified as an endocrine organ?
thalamus
(The thalamus does not release any endocrine hormones).
what do Endocrine cells do?
release their secretions internally
(Endocrine cells typically secreted hormones into the circulatory system through the process of exocytosis).
function of Steroid hormones
- are cholesterol based
- are transported in the blood by a carrier lipoprotein
- bind to intracellular receptors in target tissue cells
When steroid hormones bind to their receptors:
gene transcription occurs
Steroid hormones influence gene activity in target cells.
The link between a first messenger and a second messenger in a cell that responds to peptide hormones is usually:
a G protein
G proteins are linked to membrane receptors and provide a link to the activation of a second messenger like cAMP.
A change in blood glucose levels in the body is classified as a _____________ stimuli.
humoral
Humor means ‘fluid of the body’ and so humeral stimuli include changes in concentration of substances within body fluids.
complete the sentence:
The peripheral endocrine gland which is central to blood glucose control is the _____________
pancreas
complete the sentence:
he medulla of the _____________
gland also assists in short term blood glucose homeostasis.
adrenal
complete the sentence:
The adrenal gland is located on top of the _____________
kidneys
complete the sentence:
The _____________ glands are located on the posterior surface of the thyroid gland.
parathyroid
complete the sentence:
The _____________is situated between the stomach and the spleen.
pancreas
True or False
The pineal gland releases melanin which helps to control our circadian rhythms.
False
True or False
The adrenal cortex releases steroid hormones.
True
True or False
Insulin is released from the alpha cells in the pancreas in response to a high blood glucose.
False
True or False
Iodide is essential for the production of the thyroid hormones; T3 and T4.
True
