Endocrine system

What are glands?

• Organs specialized for secretion of substances needed by the organism

• Organs that produce blood cells

• Organs that filter blood

• Organs that transport oxygen in the body

What are exocrine glands?

• Glands that secrete their secretions directly into the bloodstream

• Glands that produce hormones

• Glands that secrete their secretions to the appropriate location by ducts

• Glands that regulate body temperature

What are endocrine glands?

• Glands that secrete their secretions to the appropriate location by ducts

• Glands that release their secretion directly into the bloodstream

• Glands that produce sweat

• Glands that produce digestive enzymes

What is an example of an organ that is both endocrine and exocrine gland?

• Pancreas

• Thyroid gland

• Parathyroid gland

• Hypothalamus

What is a hormone?

• A signal molecule that is secreted into the blood

• A protein molecule that binds to hormone

• An organ specialized for secretion of substances needed by the organism

• A gland that secrete its secretion directly into the bloodstream

How do hormones reach their target cells?

• By secreting directly into the bloodstream

• By secreting to the appropriate location by ducts

• By recognizing a target cell and binding to specific receptors

• By triggering events within the target cell that result in a response

What are target cells?

• Cells that produce hormones

• Cells that respond to hormones

• Cells that regulate body temperature

• Cells that produce sweat

What is a receptor?

• A signal molecule that is secreted into the blood

• A protein molecule in or on the target cell that binds to hormone

• An organ specialized for secretion of substances needed by the organism

• A gland that secrete its secretion directly into the bloodstream

What is the function of a receptor?

• To produce hormones

• To regulate body temperature

• To bind to hormone and trigger events within the target cell

• To secrete its secretion directly into the bloodstream

What are tropic hormones?

• Hormones that affect only one or a few tissues

• Hormones that affect most of the tissues of the body

• Hormones that have other endocrine glands as their targets

• Hormones that regulate body temperature