Endocrine System Practice Questions
with Key Concepts Answers Verified and
Graded A+|| LATEST UPDATE 2026
The endocrine system consists of specialized tissues and glands that secrete
chemical messengers called?
hormone
specific cells on which hormones act are?
target cells
Neuroendocrine cells are?
an important link between the nervous and endocrine systems
A group of about 16 closely related lipids that are manufactured by many different
tissues in the body are?
Prostaglandins
Hormone secretion is typically regulated by?
negative feedback
A hormone that initiates changes in target cells that lead to some effects is
referred to as a?
first messenger
The endocrine gland decreases its hormone output to abnormally low levels,
which deprives target cells of needed stimulation is
hyposecretion
Steroid hormones is?
, turn specific genes on or off
Regulates most endocrine activity and links the nervous and endocrine systems,
is known as?
hypothalamus
Secretes several different hormones and is called the master gland, known as
the?
pituitary gland
Deficiency can lead to the condition called diabetes insipidus, in which enormous
quantities of urine may be excreted, known as
ADH
During lactation, _______ stimulates cells in the mammary glands to secrete milk.
prolactin
Growth hormone is?
a promoter of protein synthesis
The _______ gland, shaped somewhat like a shield, lies anterior to the trachea
and just below the larynx
thyroid
The _______ regulate(s) calcium concentration.
parathyroid glands
When glucose concentration becomes very high, _______
beta cells secrete insulin
The _______ is called the emergency gland of the body because it prepares us to
cope with threatening situations.
with Key Concepts Answers Verified and
Graded A+|| LATEST UPDATE 2026
The endocrine system consists of specialized tissues and glands that secrete
chemical messengers called?
hormone
specific cells on which hormones act are?
target cells
Neuroendocrine cells are?
an important link between the nervous and endocrine systems
A group of about 16 closely related lipids that are manufactured by many different
tissues in the body are?
Prostaglandins
Hormone secretion is typically regulated by?
negative feedback
A hormone that initiates changes in target cells that lead to some effects is
referred to as a?
first messenger
The endocrine gland decreases its hormone output to abnormally low levels,
which deprives target cells of needed stimulation is
hyposecretion
Steroid hormones is?
, turn specific genes on or off
Regulates most endocrine activity and links the nervous and endocrine systems,
is known as?
hypothalamus
Secretes several different hormones and is called the master gland, known as
the?
pituitary gland
Deficiency can lead to the condition called diabetes insipidus, in which enormous
quantities of urine may be excreted, known as
ADH
During lactation, _______ stimulates cells in the mammary glands to secrete milk.
prolactin
Growth hormone is?
a promoter of protein synthesis
The _______ gland, shaped somewhat like a shield, lies anterior to the trachea
and just below the larynx
thyroid
The _______ regulate(s) calcium concentration.
parathyroid glands
When glucose concentration becomes very high, _______
beta cells secrete insulin
The _______ is called the emergency gland of the body because it prepares us to
cope with threatening situations.
