HBS Lesson 2.3

Question 1

What are hormones?

Answer 1

• A chemical secreted by an endocrine gland that signals a system to do something
• Pituitary gland is called the “master gland” but needs feedback from the hypothalamus

Question 2

Endocrine Glands?

Answer 2

• Pineal gland
• Hypothalamus
• Pituitary gland
• Thyroid gland
• Parathyroid gland
• Thymus
• Adrenal glands
• Páncreas
• Ovary (female)
• Testis (male)

Question 3

Exocrine glands?

Answer 3

• Sweat gland
• Mammary gland
• Salivary glands
• Oil glands

Question 4

How do feed back loops help regulate the action of hormones?

Answer 4

• When hormones are to above normal feedback loops reduce their levels
• When hormones are below normal feedbacks loops increase their levels

Question 5

How can too little or too much of a hormone lead to disease?

Answer 5

Hormone Problems w/ levels Resulting Disease

Insulin Too Low. Type 1 Diabetes
(High blood sugar)

Growth Too high. Acromegaly
Hormone (Excess growth)

T3/T4. Too High. Hyperthyroidism
(High metabolism)

Cortisol. Too Low Addison’s Disease
(Weakness, etc.)