1. Your Body Systems Lesson 5 Your Endocrine and Reproductive Systems
Chapter 13
Your Body Systems
Lesson 5
Your Endocrine and Reproductive Systems

2. Your Endocrine and Reproductive Systems
LESSON 5
Your Endocrine and Reproductive Systems
BIG IDEA
Your body has glands and organs that allow it to function and reproduce.
Building Vocabulary
The system of glands throughout the body that regulate body functions
endocrine system
A group of cells, or an organ, that secretes a chemical substance
gland
metabolism
The process by which the body gets energy from food
A gland that signals other endocrine glands to produce hormones when needed
pituitary gland
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3. Your Endocrine and Reproductive Systems
LESSON 5
Your Endocrine and Reproductive Systems
BIG IDEA
Your body has glands and organs that allow it to function and reproduce.
Your Endocrine System
The endocrine system sends messages to the body through the blood in the form of hormones.
New Vocabulary
endocrine system The system of glands throughout the body that regulate body functions
Lesson Home

4. Your Endocrine and Reproductive Systems
LESSON 5
Your Endocrine and Reproductive Systems
BIG IDEA
Your body has glands and organs that allow it to function and reproduce.
Your Endocrine System
A gland produces hormones, which are chemical substances that help to regulate the way your body functions. For example, the thyroid gland controls metabolism. 
New Vocabulary
gland A group of cells, or an organ, that secretes a chemical substance
New Vocabulary
metabolism The process by which the body gets energy from food
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5. Your Endocrine and Reproductive Systems
LESSON 5
Your Endocrine and Reproductive Systems
BIG IDEA
Your body has glands and organs that allow it to function and reproduce.
Glands and Hormones
The major glands of the endocrine system include the
pituitary gland.
thyroid.
parathyroid.
adrenals.
hypothalamus.
thymus.
pancreas.
The glands of the reproductive system are also part of the endocrine system.
New Vocabulary
pituitary gland A gland that signals other endocrine glands to produce hormones when needed
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6. Your Endocrine and Reproductive Systems
LESSON 5
Your Endocrine and Reproductive Systems
BIG IDEA
Your body has glands and organs that allow it to function and reproduce.
Glands and Hormones
Glands produce specific hormones, which travel through the bloodstream to cells that need them. Some hormones are produced continuously, while others are produced at certain times.
An example of glands producing hormones during certain times is your adrenal glands. They release the hormone adrenaline, which allows your body to respond to stress.
New Vocabulary
pituitary gland A gland that signals other endocrine glands to produce hormones when needed
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7. Your Endocrine and Reproductive Systems
LESSON 5
Your Endocrine and Reproductive Systems
BIG IDEA
Your body has glands and organs that allow it to function and reproduce.
Problems of the Endocrine System
Diabetes
Type 1
Occurs when the pancreas cannot produce enough insulin.
People with type 1 diabetes need to take extra insulin to help control their blood sugar.
Type 2
Occurs when the body cannot properly use the insulin it produces.
Type 2 diabetes is preventable. Maintain a healthy weight and stay physically active to help prevent it.
Diabetes can cause heart disease, kidney failure, blindness, and circulatory problems. Diabetes is the seventh leading cause of death in the U.S.
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8. Your Endocrine and Reproductive Systems
LESSON 5
Your Endocrine and Reproductive Systems
BIG IDEA
Your body has glands and organs that allow it to function and reproduce.
Problems of the Endocrine System
Overactive or underactive thyroid
Overactive thyroid
hyperthyroidism
Thyroid gland makes too many hormones.
Underactive thyroid
hypothyroidism
Thyroid gland is not making enough hormones.
Overactive thyroid (hyperthyroidism): Symptoms of hyperthyroidism include swelling in the front of the neck, nervousness, increased sweating, and weight loss.
Underactive thyroid (hypothyroidism): Symptoms of an underactive thyroid gland include tiredness, depression, weight gain, hair loss, and pain in the muscles and joints.
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