Thermoregulation

• click on the following animation and continue until it says ¨The End¨
• Thermoregulation

HIV

• read the notes on HIV below, and take the following quiz on HIV
• Human Immunodeficiency Virus
• HIV is the virus that leads to AIDS
• HIV is a retrovirus that contains RNA, and uses reverse transcriptase to copy its genome into DNA
• the viral DNA is then incorporated into the host DNA
• HIV infects Helper T lymphocytes (a type of white blood cell) which have the CD4 protein on their surface
• to a lesser extent, it also attacks any other immune cell that has the CD4 protein
• the virus contains an envelope that binds to CD4 proteins, resulting in receptor-mediated endocytosis in which the host cell engulfs the virus
• in transcribing and translating the viral genes, the host cell reproduces the virus, and it buds out of the cell to infect other cells
• the Helper T lymphocytes are disabled and destroyed, often with no symptoms, causing a significant decrease in levels of these cells
• gradual deterioration of the immune system and the destruction of the lymphoid organs triggers the immunosuppression that leads to AIDS
• Acquired Immunodeficiency Syndrome (AIDS) is the final stage of HIV infection
• one of the signs of AIDS is opportunistic infections, which take advantage of the body´s weakened immune system and lead to premature death

Immunity

• read text pages 319-329 and do p. 344 # 1, 3

Unit Test: Homeostasis

• the unit test will take place on Friday October 3rd
• the following topics on the IB syllabus will be covered:
• 6.5 (Nerves, Hormones and Homeostasis) - 15 questions (nerves), 6 questions (hormones and homeostasis)
• 6.6 (Reproduction) - 5 questions
• 6.3 (Defence against infectious disease) - 5 questions
• Test format: multiple choice, short answer, data analysis, modified true/false (in which the statement must be corrected if it is false)
• note: some questions will be taken directly from the IB syllabus

Endocrine Quiz

• there will be a quiz on the Endocrine system (all topics relating to hormones) on Monday September 29
• format: multiple choice, matching, short answer
• hormones you should know: insulin, glucagon, estrogen, progesterone, LH, FSH, thyroxin, TSH, TRH, epinephrine, oxytocin, GnRH

Female Reproductive Hormones

• check out the following animation and complete the self-quiz on the Female Reproductive Hormones

Synapses

• check out the following animation of synapses

Reflex Arcs and Electrochemical Impulses

• check out the following animation of Reflex Arcs
• check out the following animation of Electrochemical Impulses
• do text page369 #1, 2, 3

Overview of the Nervous system

• complete the following module on the Nervous System
• read text pages 350-359

The Nervous System

• read text pages 345-349 and do #1 a
• here is an animation of the Thyroid Hormones

Blood Glucose Regulation

• if you are already stressed out from school, and need to relax, click on the Singing Horses

Homeostasis

• read the text pages 376 and 377, and do page 378 #1, 4, 5
• animation of the action of epinephrine on a target cell

The Endocrine System

• TONIGHT´S HOMEWORK:
• check out the following notes on the Endocrine System (read all 3 sections and do the quiz at the end)
• read text pages 370 to 375 and do page 379 # 2 and 3
• OPTIONAL REVIEW: cell structure and function
• OPTIONAL REVIEW: membranes and transport