Chapter 17 Endocrine System latest complete update A+ graded.
2 views 0 purchase
Module
BIOLOGY 2 (BIOLOGY2)
Institution
Bay State College
Chapter 17 Endocrine System latest complete update A+ graded
Four mechanisms of communication between cells Gap Junctions
Neurotransmitters
Paracrine
Hormones
Gap Junction pores in cell membrane allow signaling molecules, nutrients, and electrolytes to move from cell...
chapter 17 endocrine system latest complete update
four mechanisms of communication between cellsgap
gap junctionpores in cell membrane allow signalin
paracrinesecreted into tissue fluids to stimulate
Written for
Bay State College
BIOLOGY 2 (BIOLOGY2)
All documents for this subject (1)
Seller
Follow
docguru
Reviews received
Content preview
Chapter 17 Endocrine System latest
complete update A+ graded
Four mechanisms of communication between cells Gap Junctions
Neurotransmitters
Paracrine
Hormones
Gap Junction pores in cell membrane allow signaling molecules, nutrients, and electrolytes to
move from cell to cell.
Neurotransmitters released from neurons to travel across the synaptic cleft to the second cell.
Paracrine secreted into tissue fluids to stimulate physiology of nearby cells
Hormones chemical messengers that travel in the bloodstream to other tissues and organs
(called targets) that stimulate a physiologic response.`
Unlike the nervous system, the endocrine system o Releases hormones into the bloodstream to
circulate throughout the body
o Responds slowly (seconds or days); hormonal effect may continue for days or longer
How is the nervous system and the endocrine system similar? o Both communicate with
chemicals; several function as both neurotransmitters and hormones.
o Some hormones and neurotransmitters have the same effect on the same organ.
Pituitary glandsuspended from hypothalamus by a stalk - the infundibulum
Pituitary gland is housed in sella turcica of sphenoid bone
Pituitary gland size and shapekidney bean
, Pituitary gland two structures o Anterior pituitary (adenohypophysis)
o Posterior pituitary (neurohypophysis)
Anterior pituitary anatomy linked to the hypothalamus by the hypophysial portal system
How is the Anterior pituitary linked to the hypothalamus by the hypophysial portal system?
o Primary capillaries in the hypothalamus are connected to secondary capillaries in the
anterior pituitary by portal venules.
o Hypothalamic hormones regulate adenohypophysis cells by releasing or inhibiting hormones.
Posterior pituitary anatomy Nerve cell bodies in the hypothalamus pass down the stalk through
the hypothalamo-hypophysial tract and end in the posterior lobe.
o Hypothalamic neurons secrete hormones that are stored in neurohypophysis until released into
blood
The hypothalamic hormones regulate anterior pituitary
Hormones that stimulate the pituitary to release hormones of its own releasing hormones
Hormones that suppress pituitary secretion inhibiting hormones
o Notice they are named by their effect on the anterior pituitary.
hypothalamic hormones produced in hypothalamus and stored/released by posterior pituitary
Oxytocin (OT) and antidiuretic hormone (ADH)
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller docguru. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £6.29. You're not tied to anything after your purchase.
