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Introduction
The difference between the glands channels
and Endocrinology.
 What is the difference between the enzyme
and hormone.
 Definition Hormone.
 Types of hormone.
 Definition glands.
 Endocrinology.
 The most important endocrine glands.

The difference between the glands channels
and Endocrinology
- Glands channels:
Movement of secretions in the channels for pouring in
the body cavities.
Example: Salivary glands ,Sweat glands .
- Endocrinology
Pour their secretions directly into the blood.
Example: pituitary gland, thyroid gland .
- Mixed glands
Contains two kinds of cells.
I: secreted hormones pouring directly into the blood.
II: secretes other substances as coenzymes is
transmitted by the channels.
Example: liver, pancreas.
What is the difference between
the enzyme and hormone
All protein
Difference :
Hormone: a substance that a regulator of vital
activities in the body, such as working as an
organizer for the secretion of enzymes.
The enzyme: help to complete the reactions that
occur body Khim food particles such as complex
sugars .
Definition Hormone:
A chemical secreted by the endocrine glands in the
blood directly to perform a particular function and that
function of hormones in general, coordinate the work of
members of the body.
Types of hormone:
1- protein hormones such as insulin .
2- Steroid hormones such as sex hormones .
3- Amino acid hormones such as thyroxine .
Definition glands:
Members of tissue found in the body in different places,
consisting of the cells release chemicals called:
"Hormones“.
Endocrinology
A group of cells that secrete
substances called hormones
that affect the rest of the
cells of the body.
Glands function in an orderly
fashion with the nervous
system, which plays an
important role in the
secretion of certain
hormones .
The most important endocrine glands:
A- Pituitary gland: found in the base of
the brain .
Secretes hormones:
1 - Growth Hormone.
2 - stimulating hormone of the thyroid gland.
3 - Hormone prolactin.
4 - Hormone ACTH.
5 - Hormone MSH.
6 - Hormone (Gonadotrophine).
7- Hormone ADH or Vasopressin.
8- Oxytocin Hormone.
B- Thyroid glands :
Found in the front area of the neck
in front of the trachea .
Secrete a Hormone called
Althairoxin.
There are also cells in the thyroid
gland secrete calcitonin.
C- Parathyroid glands:
Number four are in the back of the
thyroid gland.
Produce the Hormone
Albarrathormon
D- Pancreas :
There are behind the stomach,
containing the islands of Langerhans.
1- Alpha cells secrete glucagon .
2- Beta-cells secrete insulin Inzim
sugar in the body .
E- Adrenal glands :
Two glands located above the kidneys.
Produce the Hormone cortisol.
F- Genital (testicular and
ovarian):
- Testes produce androgens, the most
important testosterone.
- The ovaries produce estrogens Such
as Alestreol , Cholesterol .
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