Dd Flashcards
(34 cards)
specific cell a hormone binds to
and acts on (carries a message to).
Target cell
found on the surface of their
membranes of the target cells, they are protein
molecules that recognize specific hormones only
Receptors
specialized nerve cell
that, when stimulated, releases hormones
directly into the bloodstream for delivery to its
target cells.
Neurosecretory cell
operates as a cycle in which the last step
affects the first step.
Feedback system
endocrine gland decreases its
activity in response to an increased concentration of the
substance it regulates.
Negative feedback system
operates when an endocrine gland
increases its rate of hormonal secretion in response to a rising
concentration of the substance the hormone regulates.
Positive feedback system
Main regulator of
homeostasis.
Found at the base of your
brain.
Produces hormones that help
turn on and off the other
endocrine glands in your
body. Like, oxytocin and the
antidiuretic hormone (ADH).
Hypothalamus
Is a pea-sized gland found in the center of the
skin, right behind the bridge of the nose,
below the hypothalamus of the brain.
§ Divided into Anterior Pituitary and Posterior
Pituitary Gland, each secretes different
hormones.
§ Receives instructions from the hypothalamus
through the releasing hormones.
Pituitary gland
Located in the neck region and produces two hormonesthyroxine and calcitonin.
Thyroid gland
Promotes growth and development
Thyroxin
Controls calcium level in blood
Calcitonin
Four tiny glands embedded
on the surface of the thyroid.
Secretes the parathyroid
hormone which promotes
digestion of bone tissue to
release calcium to the blood.
Parathyroid gland
mineral that
keeps your nerves and
muscles working properly.
Calcium
Is an organ with both
endocrine and exocrine
cells.
Pancreas
enzymes
that aid in digestion in
the small intestine.
Exocrine cels
which
are arranged in bunches
called Pancreatic Islets,
secrete insulin and
glucagon.
Endocrine cell
plays an
important role in
keeping the levels of
sugar (glucose) in the
bloodstream under
control.
Insulin
does
exactly the opposite.
It increases the level
of sugar in the body
by speeding up the
conversion of
glycogen to sugar in
the liver.
Glucagon
consists of two parts- the
inner layer called the adrenal
medulla and the outer layer
called the adrenal cortex.
Adrenal gland
also called
adrenaline) increases heart
rate, stimulates faster
breathing, and enlarges the
pupils of the eyes.
Epinephrine
together
with epinephrine it makes
more fuel available to the body
cells.
Nonrepinephrene
steroid
hormones that promote
glucose synthesis and break
down fats and proteins.
Corticosteroids
Located near the thalamus
of the brain.
• Produces melatonin which
regulates body rhythms and
sleep patterns.
Pineal gland
The human reproductive
organs.
Gonads
