I) The Thyroid Gland
at base of neck, in front of trachea.
Secretes THYROXINE, (T4)
speeds up the rate of
metabolism of fats, proteins and
Hypersecretion of thyroxine
Overproduction of thyroxine,
therefore oxidize sugars
Hormonal Regulation of Blood Sugar
As part of homeostasis, the body keeps your blood
glucose concentration within a acceptable range.
The pancreas is partly
exocrine gland because
it secretes digestive
enzymes through a duct
to the small int
The Stress Response
Fight or Flight
Controlled by the G) The Adrenal Glands
Above each kidney.
Adrenal medulla (inner)
regulated by the N.S.
Adrenal cortex (outer)
regulated by hormones
1) Adrenal Medulla
Produces epinephrine (adrenaline)
Homeostasis: the tendency of
the body to maintain a relatively
constant internal environment
regardless of changing external
operate by means of
negative feedback loops.
Negative vs. Positive
What is the Endocrine System?
The Endocrine System controls
body functions through chemical
substances (hormones), which are
transported throughout the body
in the blood.
Helps co-ordinate the
homeostatic balance of the
Do Now: Copy the following chart
Category and type of Receptor
Examples of Receptor
rods and cones in the eye
taste buds on the tongue
food particles in saliva
olfactory receptors in
Collect a notes package from the front.
If you havent handed in your student
survey/course outline signature sheet, please
do so now.
Living cells can only survive and function
within a very narrow range of conditions.
Collect a handout from the front.
What are the 5 different senses?
How do we perceive different
input to the nervous system is in the form of
our five senses: touch, taste, smell, sight
sight, taste, smell and
Pick up a notes package from the front.
Answer the following questions:
List all the different types of touch receptors.
How do we taste: sweet, sour, salty, and bitter
in the upper part of the nasal cavity there
are olfactory cell
Functions of the Ear
There are three parts to the Ear:
1.The Outer Ear
2.The Middle Ear
3.The Inner Ear
Anatomy of Ear
Organ of Corti