Lesson 3: The Endocrine and Exocrine Systems Answers

Use the drop-down menus to identify the terms described below. a group of cells that secretes substances into the blood or directly into an organ a substance produced by cells that helps specific groups of cells to perform specific functions a channel or tube that conveys a substance

are chemical messengers that can travel through the bloodstream and tell cells in the body what to do. They are very important in maintaining homeostasis.

Use the drop-down menus to determine which system the following structures belong to. pituitary gland thyroid gland salivary glands

thyroid gland

salivary glands

Use the drop-down menus below to complete the following statement. The system contains glands that secrete hormones into the bloodstream, whereas the system secretes substances through ducts.

Which endocrine gland is indicated by the arrow?

Which endocrine gland is indicated by the arrow?

Use the drop-down menus to determine which structures of the endocrine system are described below. connects the endocrine system to the nervous system called the “master gland” of the endocrine system secretes a hormone that regulates sleep cycles regulates the development and differentiation of T lymphocytes

Which exocrine gland is indicated by the arrow?

Use the drop-down menus to determine which structures of the exocrine system are described below. secrete mucus that protect organs secretes enzymes that aid in digestion secrete tears keep the skin hydrated and soft

is the state of maintaining a stable internal environment despite changing external conditions.

Read the scenario below. Which type of feedback loop is occurring?During labor, certain hormones are released that cause the contraction of the uterus in order to push the baby out. When those hormones are sensed by the glands of the endocrine system, they secrete more of that hormone which keeps labor going until the baby is born.

A growth chart is used in monitoring the growth and development of a child. The star on the chart represents a girl who is at the doctor for a routine check-up. Judging by the location of the star, should the doctor conduct tests to examine her pituitary gland?

Use the drop-down menus to determine which structures of the endocrine system are described below.

Why or why not?

endocrine✔ exocrine

pancreastestesparathyroid gland✔ pituitary gland called the “master gland” of the endocrine system

secretes enzymes that aid in digestion

a substance produced by cells that helps specific groups of cells to perform specific functions