1. Station 1: Identifying Endocrine Organs Station 2: Role of A. N. S
Station 1: Identifying Endocrine Organs Station 2: Role of A.N.S. and Endocrine System in Stress Response Station 3: ipads Reading and Reviewing Station 4 : Study Word Parts and Nervous System

2. Station 1: Identifying Endocrine Organs
Identify the endocrine organs on the human torso model and be familiar with the hormones they produce and their functions.
Try to identify other organs and their functions.

3. Station 2: Role of A.N.S. and Endocrine System in Stress Response
Purpose: To understand the physiological basis of the Stress Response
Directions:
1. Form lab groups of 4 students
2. Choose ONE of the following stressors
3. Research Question: What effect will the stressor have on heart rate (HR) and blood pressure (BP)?
4. Form a hypothesis for each stressor tested (e.g.,“ Pain will elevate HR”)
5. Make measurements as directed and record on spreadsheet (included)
6. Discuss data
A. Temperature Stress
1. Have the subject sit quietly for 5 minutes.
2. Record resting HR and BP. Deflate cuff but leave attached to one arm.
3. Ask the subject to place their hand in a bucket of ice water.
4. Take HR and BP measurements at 1 minute intervals for 3 minutes.
5. At 3 minutes, have subject remove their hand from the ice water and pat dry.
6. Record post-stress HR and BP 2 min after removal.
B. Orthostatic Hypotension
3. Ask the subject stand upright against the wall. It is important that they relax as much as possible (other group members should remain quiet!).
4. Record HR and BP immediately upon standing. SAFETY NOTE: It is important that other group members closely monitor the study subject and be prepared to catch them should they faint.
5. Measure HR and BP at 2 min intervals (maximum of 8 minutes). Stop the experiment if the subject begins sweating or feels light-headed.
6. At the end of the time period, have the subject sit down and rest. Record post-stress HR and BP 2 min later.

4. Orthostatic Hypotension
Temperature Stress
Before immersion (Baseline)
1 minute
2 minute
3 minute
2‐min post-stress ID BP HR
Orthostatic Hypotension
Sitting at rest (Baseline)
2 minute
4 minute
6 minute
8 minute
2‐min post-stress ID BP HR

5. The endocrine system releases chemical messages in the form of hormones into the bloodstream. These messages are delivered throughout the body to coordinate the activities of cells.
The endocrine system is composed of the ductless glands and the hormones they produce. Examples include: Pituitary, thyroid, and adrenal glands.
Hormones are chemical messages produced by the endocrine glands. They travel via the bloodstream to communicate regulatory messages to the cells of the body.
A gland is an organ that consists of cells that secrete materials into other regions of the body.
Exocrine Glands: These glands secrete nonhormone chemicals into ducts, which transport the chemicals to specific locations inside and outside the body. Examples include: Sweat glands, salivary glands and mucous glands.
Endocrine Glands: These glands secrete hormones into the bloodstream to deliver chemical messages to the cells. These glands have no ducts or tubes. The secretions of ductless glands are entered directly into the bloodstream.
Hormones are chemical compounds that are secreted in small amounts into the bloodstream. They influence the activity of certain cells of the body.
Target cells are the specific cells that will respond to the signal carried by a hormone.
The target cell has protein receptors embedded in the cell membrane to which the hormone binds in a lock and key fit. If the hormone does not “fit” into the receptor protein, there will be no response or action from the cell.

6. Check Answers next Slide
Draw the picture and Answer the questions found below the drawing. The numbers in the drawing correspond to the question of the same number.
1. What are the molecules seen at #1?
2. Name the structure at #2
3. What is the relationship between structures 1 and 2?
4. What name is given to the cells in this drawing?
What is the name of the structures seen at the cell surface?
Explain what is happening at #6 in the drawing.
What type of hormone is communicating with Cell A? How do you know?
What type of hormone is communicating with Cell B? How do you know?
Explain the importance of the “lock and key” fit between the hormone and the target cell.
Check Answers next Slide

7. 1. Hormones.
2. Blood vessel.
3. Hormones are transported to their target cells by traveling through the bloodstream.
4. Target cells.
5. Receptor proteins.
6. The hormone binds to the receptor protein at the cell surface. This initiates a series of events inside the cell, leading to a response or action by the cell.
7. Cells A shows an amino acid based hormone. The hormone cannot enter the cell, and has attached at the cell surface.
8. Cell B shows a steroid hormone. This type of hormone diffuses across the cell membrane and binds to receptors inside the cell.
9. The hormones must fit into the receptor proteins of a cell in order for the cell to respond. If there is no “fit” the cell ignores the hormone and no action is elicited within the cell.

8. When finished quiz each other on the Nervous System Terms and the Brain

9. Station 3: ipads Reading and Reviewing Station 4 : Study Word Parts and Nervous System