<h2>Fight or Flight response</h2>
Explanation:
- General Adaptation Syndrome or GAS is the three stage process.
- General Adaptation Syndrome or GAS is the physiological changes that the body goes through when it is in Stress.
- The theory of GAS is given by Hans Selye.
- Hans Selye observed in the rats, the physiological changes when they are exposed to stressful events.
- These changes are the typical response to stress.
- The three stages of General Adaptation Syndrome are as follows:
1. Alarm reaction stage.
2. Resistance stage.
3. Exhaustion stage
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Answer: The follicle assumes a new role which is:
--> the secretion of hormone PROGESTERONE and
--> OESTROGEN
Explanation:
The cycle in the female reproductive system of humans which tak s 28dayd to complete is known as menstrual cycle. At the beginning of the menstrual cycle, several primary oocytes begin to develop. Each oocyte is surrounded by actively dividing granular cells from which it receives nutrients. The whole structure is called a FOLLICLE.
A developing follicle secretes OESTROGEN.
Usually, only one of the developing follicles becomes mature to produce an ovum. As the follicle matures, it becomes filled with fluid and the oocyte is pushed to one side. Ovulation occur when there is release of an ovum from a mature follicle.
The ruptured mature follicle develops into a CORPUS LUTEUM which is a solid yellow body that secretes the hormone PROGESTERONE. This is the hormone that helps to maintain the early stages of pregnancy if fertilization and implantation of embryo occurs. In the absence of pregnancy, the corpus luteum shrivels.
<span>The Golgi apparatus </span>is responsible for packing proteins from the rough endoplasmic reticulum into membrane-bound vesicles which then trans locate to the cell membrane. At the cell membrane, the vesicles can fuse with the larger lipid bi layer, causing the vesicle contents to either become part of the cell membrane or be released to the outside.