Biology 12

Chapter 6 The Endocrine System • MHR 181 blood from bone tissue. In the kidney, it increases the retension of calcium. In the sm ...

182 MHR • Unit 2 Homeostasis regular pattern. Some of these biological cycles correlate with the seasons. Other processes follow ...

Chapter 6 The Endocrine System • MHR 183 children. The thymus gland produces thymosin, a hormone that stimulates the production ...

6.2 The Adrenal Glands and Stress 184 MHR • Unit 2 Homeostasis The body has two adrenal glands, one on top of each kidney. As sh ...

Chapter 6 The Endocrine System • MHR 185 The Adrenal Cortex The adrenal cortexproduces two types of steroid hormones — the gluco ...

THINKING LAB Symptoms of Cushing’s Syndrome and Addison’s Disease Background Cushing’s syndrome is caused by an excess of glucoc ...

Chapter 6 The Endocrine System • MHR 187 disease is caused by the autoimmune destruction of the adrenal cortex tissue, resulting ...

SKILL FOCUS Initiating and planning Hypothesizing Identifying the variables Communicating results Investigation DESIGN YOUR OWN ...

Chapter 6 The Endocrine System • MHR 189 Fight or Flight Syndrome In Chapter 5, the “fight or flight” syndrome was discussed in ...

190 MHR • Unit 2 Homeostasis Selye’s Legacy Selye described the anti-inflammatory properties of adrenal steroid hormones, such a ...

Chapter 6 The Endocrine System • MHR 191 SECTION REVIEW Describe how two different information pathways control hormone secreti ...

6.3 Reproductive Hormones 192 MHR • Unit 2 Homeostasis Previously you learned that sexual reproduction is the result of the comb ...

Chapter 6 The Endocrine System • MHR 193 week until death. Figure 6.23 shows the major parts of the male reproductive system. Th ...

194 MHR • Unit 2 Homeostasis Male Reproductive Hormones The process of spermatogenesis is stimulated by the FSH from the anterio ...

hormones. The steroid hormone testosteroneis the major androgen and is responsible for the development of the male secondary sex ...

196 MHR • Unit 2 Homeostasis The Female Reproductive System The female reproductive system (illustrated in Figure 6.26 on page 1 ...

Chapter 6 The Endocrine System • MHR 197 reaches from the ovary to the outside of the uterus. The two fallopian tubestransfer an ...

198 MHR • Unit 2 Homeostasis Female Reproductive Hormones Typically, puberty begins at age nine or 10 in North American girls bu ...

Chapter 6 The Endocrine System • MHR 199 400 will mature to release its ovum during her reproductive life. As shown in Figure 6. ...

THINKING LAB 200 MHR • Unit 2 Homeostasis only one ovum is released during each cycle. In addition, progesterone inhibits the pr ...