Endocrine system - Control and Coordination, CBSE Class 10 Science ( Biology) Video Lecture

there are two modes of control and
coordination in human beings nervous and
chemical today we will learn about the
chemical system also known as the
endocrine system
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it is also called the hormonal system it
often operates in coordination with a
nervous system endocrine system is a
system of isolated ductless glands that
pour this secretion directly into the
circulatory system for passage to
different targets in order to control
the metabolism growth differentiation
and activity the structural and
functional units of this system are
endocrine glands they secrete hormones
which are also called the chemical
messengers the hormones are secreted in
small amounts by the endocrine glands
the hormones are poured directly into
the blood and carried throughout the
body for blood circulatory system the
hormones have the effect at the sides
different from the sides where they are
made so they are called chemical
messengers the hormones act on target
organs the hormones coordinate the
activities and growth of the body the
excess or deficiency of hormones has a
harmful effect on a body
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we are now going to study about the
different endocrine glands present in
the body hypothalamus gland and
pituitary gland the pituitary gland is a
pea-sized gland located in the center of
the skull the pituitary gland acts as a
master controlling gland releasing a
number of hormones that activate other
glands
hypothalamus gland is present in the
brain hypothalamus produces releasing
hormones and inhibitory hormones
hypothalamus controls the pituitary
gland the pineal gland which is present
in the brain has no such function pineal
gland is supposed to be a vestigial
organ which teaching organ means those
organs which no longer function the
thyroid gland located in the neck
secretes the hormone thyroxine thyroxine
increases body metabolism in which food
is broken down and converted into heat
and energy the parathyroid glands are
for small glands located in the neck
behind the thyroid gland these glands
secrete a hormone that regulates the
body's use of calcium and phosphorus to
maintain healthy bones Bala tyroid
hormone also affects muscle contraction
and the conduction of nerve impulses
thymus gland lies in the lower part of
the neck and upper part of its chest it
secretes thymus hormone which plays a
role in the development of the immune
system of the body the pancreas is a
long narrow gland located in the abdomen
behind the stomach and beneath the liver
the pancreas secretes insulin or hormone
that regulates the body's use of sugar
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the adrenals are too small glands each
located on the top of one kidney the
adrenal glands releases the hormone
epinephrine which speeds up heart rate
and increases blood pressure to help the
body cope with emergencies it also
releases hormones that control the level
of salt and water in the blood and help
regulate the use of sugar it also
secretes small amounts of male sex
hormones of androgens in both males and
females
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males have sex glands called testes that
secrete androgens male sex hormones in
addition to contributing to male sexual
characteristics androgens contribute to
the production of sperm and the
development of the prostate gland
females have sex glands called ovaries
that release hormones called estrogens
these hormones contribute to the
development of female sexual
characteristics including skin hair and
breast development this was the story of
the endocrine system students you can
also check out other science lessons
through the links given on the screen
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thank you