(do NOT write on packet!) Date: 1/6/17 Topic: The Brain Page # ___ Must wear uniforms/IDs! 1/6/17 EBHS Admit Slip Read the statements in the packet and write the numbers that apply to you in your journal (do NOT write on packet!)

Right Brain/Left Brain Self-assessment What type of brain are you? Were your scores very lop-sided, or fairly even? Look at the back page. Which strategies might apply to you?

Right Brain vs Left Brain Video: https://www. youtube. com/watch

Yesterday Review: Cerebrum Cerebellum Brain Stem Hypothalamus Responsible for…

Phineas Gage Read story What part of his brain was damaged? Importance: http://news.harvard.edu/gazette/story/2015/10/lessons-of-the-brain-the-phineas-gage-story/ What part of his brain was damaged? How did the injury impact him?

Read handout and write CER paragraph answering this question. Use only 10% of your brain? Read handout and write CER paragraph answering this question.

How does the brain send signals? Thoughts??

Signaling* *Endocrine system: Made up of many glands and cells that produce and release chemical messengers into the blood *Chemical messengers = hormones “Raging hormones” ? Levels change as you sexually mature, but hormones help maintain homeostasis for people of all ages

Hormones* Chemical substance produced by the body that controls the activity of cells or organs* Blood transports hormones past every cell of the body, but only certain “target” cells/organs can respond Cells must have the right receptor for that hormone* *Receptors are proteins that fit the shape of a specific hormone molecule Lock & key interaction*

Example: Testosterone Release of testosterone  Tells cell to make proteins associated with sperm production Example: Testosterone

“The Science of Sex” http://www.discovery.com/tv- shows/other-shows/videos/science- of-sex-appeal-testosterone-vs- dopamine/ Hormone: Testosterone Neurotransmitter: Dopamine

Example: Water shortage in the body Signaling in the Body Example: Water shortage in the body Sensory neurons Hypothalamus Pituitary gland Increased sodium When vasopressin comes in contact with the receptors on the kidney cells, it stimulates the membranes of the kidney’s tubules to become more permeable to water. This means that more water can be reabsorbed and less water is added to the urine. As the endocrine system responds to dehydration, the nervous system respond by triggering thirst. Carried throughout body More water reabsorbed by body Vasopressin kidneys

Feedback Loops* Negative feedback: systems work to shut off the response that the body had to being out of balance Ex. Vasopressin (once body is back to normal sodium levels, the hypothalamus stops releasing vasopressin) Positive feedback: adjusts initial conditions towards the initial condition Ex. blood clotting

Feedback Loop Examples In pairs, come up with a mini skit for each (positive & negative). You have 7 minutes. Be prepared to share.