Download Endocrine System

TOPIC: ENDOCRINE
SYSTEM
AIM: How do the organs of the Endocrine
System aid in the maintenance of
Homeostasis?
Do Now:
1. Define the Life Process of REGULATION?
2.Compare the Life Process of Regulation to
a Cell Organelle.
What is the Purpose/
Function of the
Endocrine System?
A System of ductless glands located
around the body that produce
chemicals called Hormones that
travel to target organs to regulate a
body activity.
VOCABULARY
1. Ductless: No direct
Passageway
2. Hormone: Chemical secreted
by an Endocrine Gland that is
Specific to a target organ and will
regulate some activity associated
with that organ. Hormones travel
through the BLOOD.
3. Target
Area: Specific
area or organ
of the body
that a
Hormone will
travel to and
regulate a
body activity.
How Were Hormones
Discovered?
 Video Clips for Biology!
The Endocrine System
A. Introduction
pituitary gland
1. Main endocrine
glands
hypothalamus
thyroid gland
thymus gland
a. Pituitary gland
b. Thyroid gland
c.
adrenal
glands
pancreas
(islets)
Parathyroid glands
d. Adrenal glands
ovaries
e. Pancreatic islets
f.
Gonads
testes
The Endocrine System
How does the structure and function of the
Pituitary Gland contribute to
maintaining Homeostasis?
1. Pituitary gland: Pea shaped
gland located at the base of
the Brain.
2. Controlled by the Hypothalamus
(Part of the Brain- This is what links
the Nervous and Endocrine System)
3. Called the “Master Gland” because some of
the Hormones it secretes control the secretions
of other Endocrine Glands.
Hormones produced by the
Pituitary Gland:
1.Growth hormone (GH)
2. Thyroid-stimulating hormone (TSH)
3. Adrenocorticotrophic hormone (ACTH)
4. Follicle-stimulating hormone (FSH)
5. Luteinizing hormone (LH)
6. Prolactin (PRL)
Growth Hormone:
Promotes the normal development of Muscles
and Bones.
FSH: Follicle Stimulating Hormone
Stimulates a follicle in the ovaries to mature
an egg cell.
TSH: Thyroid Stimulating Hormone:
Stimulates the Thyroid gland to
produce its hormone.
Oxytocin: Stimulates
contraction of the
uterus during labor.
What Happens if too much or too
little of a Hormone is secreted?
Hypersecretion: Too much
Hyposecretion: Too Little
YouTube - Endocrine System and Hormones
THYROID GLAND
How Does the Thyroid Gland aid in the
maintenance of Homeostasis?
Location: Neck region
Hormone Produced:
Thyroxin
Thyroxin regulates overall
Metabolism.
Parathyroid glands: embedded in thyroid.
Produce the Hormone Parathormone:
regulates metabolism of calcium
How do the Adrenal glands
function in the Endocrine
System?
pituitary
gland
Secrete the Hormone Adrenalin
thymus
gland
Fight or Flight Mechanism
Increases heart rate, breathing rate,
releases glucose into the blood for a
quick burst of energy – super human
strength.
adrenal
glands
thyroid
gland
pancreas
(islets)
ovaries
testes
PANCREAS
How does the Pancreas function as an
Endocrine Gland to aid in the maintenance of
homeostasis?
Contains Special cells in a region called the ISLETS OF
LANGHERANS secrete the Hormones Insulin and
Glucagon.
How do these hormones function?
Insulin lowers Blood Sugar and
Glucagon Raises Blood Sugar levels
Topic: Endocrine System
Aim: How do the Endocrine
glands aid in the maintenance
of homeostasis?
 Do Now: Acrostic Poem for
HORMONE
 Homework: Text p. 632-633 Answer
Q’s 24-30 & 34
pituitary
gland
thyroid gland
thymus gland
adrenal glands
pancreas (islets)
Ovaries
testes
How are the levels of
Hormones controlled?
 Video Clips for Biology!
Feedback Mechanisms
PANCREAS
How does the Pancreas function as an
Endocrine Gland to aid in the maintenance of
homeostasis?
Contains Special cells in a region called the ISLETS OF
LANGHERANS secrete the Hormones Insulin and
Glucagon.
How do these hormones function?
Insulin lowers Blood Sugar and
Glucagon Raises Blood Sugar levels