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Endocrine System

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by

Joel Hutson

on 29 January 2016

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Transcript of Endocrine System

by Joel David Hutson
College of Lake County

Endocrine System
Major Endocrine
Gland
Anatomy
& Physiology
i) the endocrine system
helps control many of the slow physiological processes in the body, such as growth, reproduction & metabolism
Main Points
ii) what are the 8 main endocrine glands (nongonadal), where are they & what are the main functions of their hormones in relation to growth and metabolism?
Nervous System
Endocrine System
en.widipedia.org
pineal
Gland
Course Learning Objectives &
Outcomes:

C. Describe the basic ways that materials move within & between cells.

E. Describe the various organ systems (i.e., endocrine) within the human body & explain their basic functions.

L. Identify the major endocrine glands, the primary hormones produced by each, & the function of those hormones.
Compare & contrast an endocrine gland & it's hormone(s) adapted for influencing metabolism with a gland with hormones specialized for growth.
Evaluate the role of endocrine glands in helping maintain homeostasis in the body.
Diagram an interaction between one endocrine gland & another, such as two glands with antagonistic hormones.
How do hormonal imbalances arise? Infer what would happen if a particular endocrine gland malfunctioned, by producing too much hormone, or not enough.
Posterior
Regulation of Blood Pressure Objectives:

- local/hormonal/neural mechanisms operate both short & long term
- the web of interactions between these
mechanisms & their effects on blood
pressure/volume
- what factors increase peripheral
resistance in blood vessels & what is the
effect on blood pressure ?
Comparison of Terms:

- blood
flow
- blood
volume
- blood
pressure
versus
resistance
}
Vasomotion (2 parts) affects
peripheral resistance:

Vasoconstriction:
narrowing of
blood vessels = increased peripheral
resistance

Vasodilation:
widening of
blood vessels = decreased peripheral
resistance
CV
Physiology
CV
Physiology
CV
Physiology
CV
Physiology
& local
Common e.g.:
Orthostatic hypotension
(i.e., standing up & sitting right back down!)
Neurocardiogenic syncope
(i.e., fainting in the shower or hot tub!)

= short term
Long term
endocrine mechanisms
that regulate blood pressure by
altering blood volume
indirectly
via the kidneys operate in a web
of
synergistic
&
antagonistic
interactions:

Synergistic
= work together

Antagonists
have opposing actions
Corticotropin Releasing Hormone (CRH) Renin Angiotensins I/II

Adrenocorticotropic Hormone (ACTH)

Aldosterone

Antidiuretic Hormone (ADH)
or Vasopressin

Erythropoietin (EPO)


More Review Terms:
Tropic/releasing hormones
: "permit"
other organs/tissue to release their
hormones

Negative Feedback Loops
: accumulation
end product inhibits its own production

Atrial
Natriuretic
Peptides (ANP)
Main Long Term Hormonal Blood Pressure Regulators
Why is this objective important to know?

Our group activities stress one of the
primary causes of death in medical centers:

-
Circulatory
/
Hypovolemic
Shock -
What are the sources, target tissues/organs,
& effects of these hormones?
Red Marrow hematocytoblasts
(blood cell stem cells)
Kidney
Stimulates
Retention of Na+ leads to
retention of H20 by
osmosis
= increased blood
volume

= increased blood
pressure
Angiotensin II
/Suprarenal Glands
Full transcript